SolidWorks Motion Research Articles

Inverse dynamics analysis of 4-DOF stacking robot with closed chain structure

A four-degree-of-freedom PR1300 stacking robot with two parallel quadrilateral structures connected in series at the shoulder was designed. The hybrid robot with local closed chains has the characteristics of compact structure, high stiffness, and high modularity. To solve the dynamic problem of the hybrid robot. Firstly, by analyzing the induced relationship between joints, the stacking robot with a local closed chain structure is transformed into two branch chain mechanisms, and the kinematic model of the robot is established using the D-H parameter method. Secondly, the Kane method is applied to model the dynamics of the two branch chains separately, and the rigid body dynamics Kane equation of the entire 4-DOF stacking robot with a closed chain structure is obtained through the augmented matrix. Finally, the SolidWorks Motion mechanical simulation platform and MATLAB software were used to program dynamic simulations and numerical calculations, and the results were compared to verify the correctness of the dynamic theory derivation. This theory provides a necessary theoretical basis for the subsequent synthesis of robot dynamic scales.

Methodology for Service Life Evaluation of Screens Welded Structures

The methodology of research on welded assemblies for fastening vibrators is based on modern software products, in particular SolidWorks Simulation in combination with SolidWorks Motion and hot spot stress (HSS) technology. It has been determined that the research on welded assemblies using the SolidWorks Education Edition software package is expedient, considering the most unfavorable situation, when there is a lack of fusion of edges. The solid-state model displays a lack of fusion as a gap between the welded parts. The research on the stress-strain state of welded structures using the finite element method shows that when the computational mesh cell size is reduced, the stress increases significantly, indicating the model singularity and the need for further application of the HSS technology. Research has revealed that the maximum stresses occur in those points of the welds where the longitudinal middle rib is connected to the plate and pipe. It has been determined that the service life of welded joints will exceed 2·106 cycles. To assess the accuracy of calculating the dynamic forces arising during the screen operation, the modeling results using the SolidWorks Motion program are compared with those classical methods that use the Lagrange equation of the second kind. It turned out that the calculation error does not exceed 30 %.

Proučavanje dinamičkih karakteristika pušaka koje funkcionišu po principu pozajmice barutnih gasova pomoću softvera Solidworks Motion

Introduction/purpose: This article presents a new approach to determining the dynamic characteristics of the automatic firing system of gas-operated automatic guns. Methods: Based on the real structure of the automatic firing system of gasoperated automatic weapons, a 3D model of the gun is simulated using Solidworks software, and the dynamic characteristics of the automatic firing system are calculated on Solidworks Motion software. Results: The obtained simulation results include displacement and velocity of the breech platform over time; the force exerted by the hammer on the bolt carrier over time; and impact force of the bolt carrier and gun body over time. These results are compared with data obtained from experiments to verify the mathematical model. The cycle of a shot according to test results is 0.0846 s and the firing rate error between theoretical and experimental results is 2.82%. Conclusion: Research content allows users to visually evaluate the working process of all parts of the automatic firing system. The results of this research can be applied to calculations for automatic firing systems of different automatic guns. This is an important scientific basis for improving and upgrading existing automatic weapons and serving the process of designing and manufacturing new types of automatic weapons in the future.

A methodological approach to assessing the durability of welded structures of screens using SolidWorks Simulation software

Purpose. To develop methodological recommendations for studying the characteristics of screen welded assemblies of ГВЧ-31 С type using specialized tools of the SolidWorks Education Edition software package. Methodology. The methodology for analyzing welds when designing a vibrator fixation system is based on the use of current software tools, in particular SolidWorks Simulation in combination with SolidWorks Motion, as well as the HOT SPOT STRESS technology. To analyze the accuracy of determining the dynamic loads arising during the screen operation, the results of modeling using the SolidWorks Motion program are compared with those obtained by traditional methods using the Lagrange equation of the second kind. The computation discrepancy is within 10 %. Findings. It has been determined that it is rational to analyze welds using the SolidWorks Education Edition software shell, taking into account the least profitable option, namely, when their edges are not finished. Furthermore, during solid-state modeling, the formation of a cavity in the weld is simulated in the form of a gap between the welded elements. The stress-strain state analysis of welded constructions using the Finite Element Method has revealed that when the computational mesh cell size is reduced, the stress value increases significantly, which indicates the result singularity and the need for further application of the HOT SPOT STRESS method. In the course of research, it has been determined that the highest stresses in welds occur on the central rib. The duration of use of welded joints is more than 2·106 cycles. Originality. For the first time, the methodology has been substantiated for determining the service life of welded elements of screen constructions using the latest computer analysis tools. The method makes it possible to calculate the dynamic forces arising in constructions performing oscillatory movements, as well as to analyze the stress-strain state of welds using the HOT SPOT STRESS technology and assess their service life. Practical value. It has become possible to implement the method for calculating the stress-strain state of welds in the design of a vibrator fixation system and assessing their service life, which is important for analyzing and determining the parameters of various vibrating machines. The results derived from the investigation were incorporated by the local entity, Ukrprommineral, to modernize the screens.

COMPARATIVE ANALYSIS OF THE BEARING CAPACITY OF PLANETARY MECHANISMS FORMED ON THE BASIS BY TWO SIMPLE JAMES PLANETARY MECHANISMS, ACCORDING TO SEQUENTIAL NON-LOOP AND CLOSED KINEMATIC SCHEMES WITH ONE LOOP

The article presents a method for comparative analysis of the bearing capacity of planetary mechanisms of various kinematic schemes using several CAD/CAE software environments. To implement the method of comparative analysis, the KOMPAS-3D and SolidWorks software environments were used. In the first environment, calculations were performed according to the method of the GOST 21354-87 standard. The initial data and results of calculations performed by the KOMPAS-GEARS software package are stored in the appropriate files. In the second environment, a parametric 3D geometric solid model of the kinematic scheme of the planetary mechanism was created. According to this model, such characteristics of gears as mass and axial moment of inertia were determined. These characteristics are used to perform optimization calculations of the mass and speed of the designed planetary mechanism. The study of the speed of the planetary mechanism can be carried out in SolidWorks Motion. The overall dimensions of the model allow the designer to assess the acceptability of the design constraints for given dimensions to the specified requirements. According to the method, a study was made of the suitability of gear designs that were designed for a closed planetary mechanism as gears of an open-loop sequential planetary mechanism. The closed planetary gear is formed by two simple James planetary gears. The circuities planetary gear is formed by the series connection of the same simple planetary gears. Two cases of loading gears for a given kinematic scheme of the planetary mechanism were studied. Keywords: simple James planetary mechanism (mechanisms type ); closed planetary mechanism; contourless planetary gear; moment of inertia of gear-wheel; gear mass; planetary gear mass; contact strength of the gearing; bending strength of the gearing; toothing resource; 3D geometric solid model of the kinematic scheme of the planetary mechanism

On the issue of evaluating the effectiveness of the anti-slip profile of machine structures

Profiles with anti-slip grooves can be used for the design and modernization of machines, but the magnitude of the anti-slip effect for such profiles has not yet been fully studied. At the same time, among the causes of injuries to transport passengers, slipping on bearing contact surfaces is not uncommon. The existing scientific literature gives some idea of the factors influencing tribocontact with the macro-dimensions of surfaces. This served as the basis for the mathematical description in the article of the factorial effect on the anti-slip efficiency of the grooved profile. For this purpose, two indicators were identified that take into account the influence of the shape and number of profile irregularities. With the help of modeling tribocontact with profiles of different corrugation in the SolidWorks Motion environment, calculated values of the maximum static friction force were obtained. These values were compared with the calculated values of performance indicators, as a result of which a conclusion was made about the adequacy of the mathematical description of the factors. Keywords: machine structures, grooved profile, anti-slip surface properties, anti-slip efficiency, tribocontact, coefficient of friction, macro-dimensions

THE USAGE OF COMPUTER-AIDED ENGINEERING SYSTEM “SOLIDWORKS MOTION” TO SOLVE THE PROBLEMS OF KINEMATICS AND DYNAMICS OF TECHNICAL SYSTEMS

The paper is dedicated to the problems of engineering analysis of technical systems by means of computer modeling, in particular the calculation of kinematic and dynamic characteristics of mechanisms and machines using the Computer-Aided Engineering system – SOLIDWORKS Motion, that allows to conduct numerical experiments to check the working capacity of mechanisms and machines, determine their main kinematical and dynamical characteristics, including for the purpose of further optimization according to various criteria. The paper shows results of the performed calculations of various types of mechanisms using examples used in the academic process within the course “Theory of Mechanisms and Machines”, which can be also successfully used within the design process, and includes examples of kinematic and dynamic analysis of linkage mechanisms, cam mechanisms, gear trains. In particular, the paper includes the simulation of the work process of the robot-manipulator using SOLIDWORKS Motion. It is shown that the usage of modern Computer-Aided Engineering systems (like SOLIDWORKS Motion or similar) enables to simplify the design process, shorten the design time and give an ability to carry out multi-parametric optimization procedures using different criteria, such as displacement values, velocities, accelerations, the values of reaction forces, overall dimensions etc. Besides, the usage of CAE-technologies enables to transform the academic process and makes it much more interesting or the students, who can use such technologies in their professional work in the future and become more competitive in the job market.

Simulation the spring element of a screen in the SolidWorks Motion

Purpose. Develop a methodology for modeling the elastic element of a screen using the SolidWorks Motion environment. The methods. The methodology for modeling the elastic element of the screen was developed on the basis of the Dassault Systèmes SolidWorks software product. The mathematical expression that describes the behavior of the spring built into SolidWorks Motion is derived. Also, in the same software product, graphs are built that reflect the behavior of the system in which the spring model is used. Findings. Based on the study of the computational experiment data, a mathematical model of the spring was developed for use in the SolidWorks Motion software product. An analytical expression for the critical vertical force corresponding to the transition of the spring from the upper position (compression spring) to the lower position (tensile spring) is obtained. The spatial vibrations of a plate supported by four springs along its perimeter are investigated. It was found that the plate exhibits behavior similar to a system with three degrees of freedom. In order to reduce the deviations, the use of horizontal springs was proposed. The methodology used was applied to the dynamic analysis of the screen. The originality. The mathematical model of the spring, which is embedded in the SolidWorks Motion software product, is determined. An expression is given that determines the value of the critical load, which will lead to a change in the position of the spring. Practical implementation. The equation that describes the state of a spring can be used when calculating elastic elements of machinery using SolidWorks Motion methods. This is especially relevant when designing mechanisms and systems where it is necessary to accurately predict the behavior of elastic elements during their operation. The use of simulation software allows engineers to optimize designs and test various load scenarios without creating prototypes.

Integrated approach to analyzing the stress-strain state of the tubbing erector manipulator mechanism based on the SolidWorks program

Purpose. The research purpose is todevelop and substantiate a method for computer analysis of the stress-strain state that occurs in the tubbing erector manipulator mechanism with several degrees of freedom, using modern computing complexes based on the finite-element method. Methods. The research uses software complexes, with the help of which a calculation-theoretical apparatus has been created, which is intended for calculating dynamic and static loads that occur in the elements of the tubbing erector manipulator mechanism. The results of modeling the stress-strain state in the parts and nodes of this mechanism, obtained using the SolidWorks Motion and SolidWorks Simulation programs, have been compared. The errors in these results have been estimated. Findings. The effectiveness of the proposed analysis method, based on the combination of SolidWorks applications, in particular, SolidWorks Motion and SolidWorks Simulation, has been proven on the example of modeling the most complex design of the UT62 tubbing erector mechanism.The essence of the method is that initially, using the SolidWorks Motion application, the laws of motion of the motors are set. The tubbing erecting process itself is divided into discrete moments of time with the selection of parts in which the stress fields are calculated and with the determination of the maximum equivalent stress, using the Simulation Setup tool. The change in these stresses during the erecting cycle is analyzed, and if it is necessary to refine the data, the discrete time step of the mechanism motion is reduced. Specific information about the stress-strain state of the part is obtained in the SolidWorks Simulation application, using data imported from the SolidWorks Motion program about gravitational and inertial forces that occur in the tubbing erector mechanism. Originality. The scientific novelty of the developed method of computer analysis for the mechanism of the manipulator of the UT62 type tubing stacker is manifested in a comprehensive approach to modeling the stress-strain state, which includes the integration of data from SolidWorks Motion and SolidWorks Simulation programs for accurate determination of stresses, taking into account both gravitational forces and dynamic loads, which ensures high accuracy and complexity of calculations in real operating conditions of the mechanism. Practical implications. The proposed method can be used for modeling the motion of mechanisms of different complexity, in particular, in the design of domestic tubbing erectors.

Locomotion characteristics of a wheeled vibration-driven robot with an enhanced pantograph-type suspension.

Introduction: The paper considers the improved design of the wheeled vibration-driven robot equipped with an inertial exciter (unbalanced rotor) and enhanced pantograph-type suspension. The primary purpose and objectives of the study are focused on mathematical modeling, computer simulation, and experimental testing of locomotion conditions of the novel robot prototype. The primary scientific novelty of the present research consists in substantiating the possibilities of implementing the enhanced pantograph-type suspension in order to improve the robot's kinematic characteristics, particularly the average translational speed. Methods: The simplified dynamic diagram of the robot's oscillatory system is developed, and the mathematical model describing its locomotion conditions is derived using the Euler-Lagrange differential equations. The numerical modeling is carried out in the Mathematica software with the help of the Runge-Kutta methods. Computer simulation of the robot motion is performed in the SolidWorks Motion software using the variable step integration method (Gear's method). The experimental investigations of the robot prototype operating conditions are conducted at the Vibroengineering Laboratory of Lviv Polytechnic National University using the WitMotion accelerometers and software. The experimental data is processed in the MathCad software. Results and discussion: The obtained results show the time dependencies of the robot body's basic kinematic parameters (accelerations, velocities, displacements) under different operating conditions, particularly the angular frequencies of the unbalanced rotor. The numerical modeling, computer simulation, and experimental investigations present almost similar results: the smallest horizontal speed of about 1mm/s is observed at the supplied voltage of 3.47V when the forced frequency is equal to 500rpm; the largest locomotion speed is approximately 40mm/s at the supplied voltage of 10V and forced frequency of 1,500rpm. The paper may be interesting for designers and researchers of similar vibration-driven robotic systems based on wheeled chassis, and the results may be used while implementing the experimental and industrial prototypes of vibration-driven robots for various purposes, particularly, for inspecting and cleaning the pipelines. Further investigation on the subject of the paper should be focused on analyzing the relations between the power consumption, average translational speed, and working efficiency of the considerer robot under various operating conditions.

Substantiating a method for computer analysis of the stress-strain state of the tubbing erector manipulator mechanism

Purpose. To develop and substantiate a method for computer analysis of the stress-strain state that occurs in the tubbing erector manipulator mechanism with several degrees of freedom, using modern computing complexes based on the finite-element method. Methodology. The research uses software complexes, with the help of which a calculation-theoretical apparatus has been created, which is intended for calculating dynamic and static loads that occur in the elements of the tubbing erector manipulator mechanism. The results of modeling the stress-strain state in the parts and nodes of this mechanism, obtained using the SolidWorks Motion and SolidWorks Simulation programs, have been compared. The errors in these results have been estimated. Findings. The effectiveness of the proposed analysis method, based on the combination of SolidWorks applications, in particular, SolidWorks Motion and SolidWorks Simulation, has been proven on the example of modeling the most complex design of the UT62 tubbing erector mechanism. Originality. For the first time, a method for computer analysis of the stress-strain state that occurs in the tubbing erector manipulator mechanism of the UT62 type has been developed and substantiated. The essence of the method is that initially, using the SolidWorks Motion application, the laws of motion of the motors are set. The tubbing erecting process itself is divided into discrete moments of time with the selection of parts in which the stress fields are calculated and with the determination of the maximum equivalent stress, using the Simulation Setup tool. The change in these stresses during the erecting cycle is analyzed, and if it is necessary to refine the data, the discrete time step of the mechanism motion is reduced. Specific information about the stress-strain state of the part is obtained in the SolidWorks Simulation application, using data imported from the SolidWorks Motion program about gravitational and inertial forces that occur in the tubbing erector mechanism. Practical value. The proposed method can be used for modeling the motion of mechanisms of different complexity, in particular, in the design of domestic tubbing erectors.

Type synthesis of metamorphic and axisymmetric parallel mechanisms using singularity for deployment and latch

Existing deployable mechanisms and metamorphic structures realize the latch ability with extra design or contact force. However, these designs limit the workspace and loading capacity. Here, we proposed an approach to the type synthesis of metamorphic and axisymmetric parallel mechanisms using singularity for deployment and latch. The singularity enables the mechanism to change its configurations between deployment and latch states through the local degree of freedom on chains. Based on screw theory and linear algebra theory, the type synthesis progress was divided into four numerical steps: the classification of screws for axisymmetric; the calculation of motion screw bases on chains; the limitation of combination coefficient for pairs and singularity; and motion verification of different configurations by exerting displacement differentials. According to the type synthesis, we presented three types for various motions respectively calculated from MATLAB. The kinematics and dynamics analysis of the three types simulated in “Solidworks Motion” proved the deployment and latch abilities. This numerical method is also available for synthesizing mirror-symmetry parallel mechanisms with various restraints by changing the classification of screws and limitation of combination coefficient.

Design and Optimisation of Horizontal Axis Wind Turbine Blades Using Biomimicry of Whale Tubercles

Wind speed is the major factor in generating power in a wind turbine. However, due to the non-optimum and redundant design of wind turbine blades, not nearly enough wind is captured for utilization. In the present study, modifications were done on the leading edge of the HAWT blade using tubercles showing their effects on aerodynamic performances. From this research, the following results found concerning the performances of HAWT with leading-edge tubercles were that; blades with tubercles on the leading edge will have superior performance in the post-stall regime by 27%, tubercles with a smaller amplitude and lower wavelength will produce higher lift and lower drag in the low wind speed condition, and tubercle blade will have a stable and smooth performance in varying wind speed conditions, producing higher torque and power at low wind speed. Using a small wind turbine model, SolidWorks Motion Analysis Simulation was used for dynamic modeling to evaluate and determine the force and torque of the mechanical structure. These results were compared and examined using standard wind turbine blades which showed an improvement of 30% in efficiency.

Assessing the accuracy of modeling the tubbing erector manipulator mechanism in solidworks motion program

Purpose. To estimate the calculation error in determining the kinematic and dynamic characteristics of the UT62 tubbing erector manipulator mechanism movement. Methodology. Modern computer analysis methods are used, which are implemented in a number of computing complexes. Due to the task complexity, a mathematical model for the manipulator mechanism fragment, which is a hydraulic cylinder with two degrees of freedom, has been developed to estimate the error of computer modeling. This model is used as a test model. Findings. On the example of the model study, it is shown that when simulating the mechanism movement, errors in the calculations are possible due to incorrect problem formulation, as well as to the inaccurate settings of the modules for converting the initial data. Under these circumstances, it has been concluded that when the input link movement is specified as a vector, then when determining the kinematic and dynamic characteristics of the mechanism, it is necessary to use a cubic spline in the “interpolator” module. Originality. For the first time, the direct problem of the manipulator mechanism dynamics has been solved, which consists in determining the static and dynamic characteristics of the device according to the given motion law of its drives. It is noted that when the motion is specified in the form of smooth analytical functions, then there is a complete coincidence of the calculation results performed by the SOLIDWORKS MOTION program with those obtained by mathematical modeling. In addition, when the mechanism link input movement is modeled as a vector, which is formed from a discontinuous function, then the cubic spline used in the “interpolator” module provides smooth harmonic functions of the movement, acceleration and jerk processes. As a result of modeling the manipulator mechanism parameters, it turned out that it is not expedient to use more than 50 points of discrete time in the research. Thus, the errors in calculating the maximum power values of the manipulator motors do not exceed 20 % for the power hydraulic cylinder and 5 % for the hydraulic motor. Practical value. The proposed algorithm can be used to model the movement of complex mechanisms in machines.

The development of AUV control system with accommodation to thruster faults

Abstract A new method for the synthesis of AUV control system for high-precision and highly reliable spatial motion is proposed. The feature of these control systems is that they include an additional accommodation circuit that provides timely detection, determination of the magnitude and compensation for the consequences of the appearance of minor faults that occur in the AUV thrusters. The simulation results confirmed the efficiency and high quality of the synthesized systems. Key words Dynamics modeling of system of solids, unmanned underwater vehicle, UUV, AUUV, mobile robot, hyper-redundant robot, computer design of machines and mechanisms, SolidWorks Motion, MCS.ADAMS. Acknowledgements This work was supported by the Russian Foundation for Basic Research (projects 20-38-70161 and 19-08-00347).

Simulation of the motion dynamics of a modular unmanned underwater vehicle during reconfiguration in a liquid medium

Abstract For the previously proposed design of a modular underwater robot, a solid-state model of an unmanned underwater vehicle (UUV) with the possibility of changing the shape of the streamlined body during operation in a liquid environment has been developed. A technique for constructing assembly nodes in 3D CAD is proposed, which allows automating the determination of the position of the rigid node’s pressure center. For the assembly developed in the SolidWorks package and retrofitted in the SolidWorks Motion Add-on with models of drives and external influences and environment, modeling of the behavior dynamics of the system of solids in a liquid viscous medium for fixed configurations of the UUV and transients during transformation from one configuration to another was performed. Estimates of the coordinates of the center of mass and the center of pressure of the UUV in various configurations are obtained. Recommendations for refining the model have been developed. The article was prepared on the basis of the report at the 32nd International Conference Extreme Robotics [5] on the recommendation of the Conference Organizing Committee. Key words Dynamics modeling of system of solids, unmanned underwater vehicle, UUV, AUUV, mobile robot, hyper-redundant robot, computer design of machines and mechanisms, SolidWorks Motion, MCS.ADAMS. Acknowledgements The work was performed in the framework of the state task of the Ministry of Education and Science of the Russian Federation no. 075-00913-21-01.

Результаты динамического моделирования поперечной устойчивости малотоннажного фургона при криволинейном движении

The article presents the results of developing a methodology and implementing dynamic modeling in the SolidWorks Motion 2016 software environment for changing the body roll angle of the Gazelle Next van during active maneuvering and turning using a lever-electromagnetic stabilization system in comparison with a lever stabilizer system. A dynamic modeling technique was developed to analyze the change in the roll angle of the Gazelle NEXT all-metal van in the driving mode when turning and intensive maneuvering with a lever and using a lever-electromagnetic stabilization system). As a result of the research, a decrease in the roll angle of the Gazelle Next all-metal van was revealed in driving modes with active maneuvering and cornering using the lever-electromagnetic stabilization system relative to that installed on the example of the Gazelle NEXT — lever. The proposed method of dynamic modeling proved the effectiveness of using a lever-electromagnetic stabilization system when turning and active maneuvering, compared with standard lever stabilizers based on a comparison of the roll angles of the first and second options.

Mountain bike suspension mechanism dynamic simulation

The article is devoted to the topic of analysing main exploitation properties of mountain bike suspension from the point of creating 3D dynamic exploitation simulation. For the purposes of the research, a special dynamic simulation was created using SOLIDWORKS software and SOLIDWORKS Motion tool. Two types of bike suspension were tested on the dynamic analysis stand measuring sprang and unsprang mass hesitation parameters, which are demanded in suspension specification. The obtained specific simulation results in the form of graphs and data tables may become an incentive for continuous developments and analyses in the area of constructing.

Braking force influence on mountain bike suspension

The article is devoted to the analysis of braking force influence on mountain bike suspension by creating (arranging) dynamic experiment simulation. To obtain required information, value of braking force was measured. This was followed by creating dynamic model with SOLIDWORKS CAD and SOLIDWORKS Motion addition. Bike suspension was tested under different braking modes, measuring sprang and unsprang mass hesitation parameters and ground reaction force, which are sought for suspension specification. The obtained results and data in the form of graphs may become an incentive for developing, analysing and maintaining the transport in the field of mountain bike engineering.

Transition analysis of flat-foldable origami-inspired deployable shelter concepts

Deployable shelters have many applications, including disaster relief and temporary housing. The ability to transport and rapidly erect such shelters is an important design consideration. Inspired by the geometric attributes of origami, multiple rapidly deployable foldable shelter design concepts are presented and analyzed by considering such requirements as (a) flat-foldability, (b) kinematic compatibility, (c) panel connectivity, and (d) load requirement to unfold the shelter completely to its upright position. Both thin- and thick-walled concepts based on consistent and accurate CAD models are evaluated and compared, with thick walls posing additional constraints, including placement of the hinge lines and nesting of panels with varied thicknesses to accommodate flat-foldability. Rigorous mathematical models are developed for transition analysis and determination of the erection torque based on the load location and without causing any panel to experience in-plane or out-of-plane deformation. The analytical solutions are compared to and verified with those obtained through detail CAD modeling and motion simulation with SolidWorks® CAD and SolidWorks Motion. The results show that compound folding patterns can be accommodated in flat-foldable, thick-walled, origami-inspired shelter concepts that act mostly or fully as a single-degree-of-freedom system with maximum connectivity of the shelter panels. Moreover, the erection torque is found to depend strongly on its application location and vary significantly during the transition process. The results reveal the importance of transition analysis and the merits of different concepts for informing future design decisions affecting the size, shape, and erection load for similar deployable shelters.