SolidWorks Modeling Research Articles

СУЧАСНІ 3D-ТЕХНОЛОГІЇ В МАШИНОБУДУВАННІ ТА АВТОМОБІЛЬНОМУ ТРАНСПОРТІ

The trends in the development of manufacturing industries are aimed at highly efficient design. 3D technologies play the main role in product design. Therefore, a mandatory condition for the high-quality training of specialists in the fields of knowledge "Road transport" and "Industrial engineering" is the study of the current state and trends in the development of 3D technologies.The rapid development of new technologies for the production of parts, in particular additive ones, makes it necessary to change the approach to the training of highly qualified workers. The approach to the presentation of information should be comprehensive, highlighting all the interrelationships between the stages of design and production. A significant number of works are devoted to spatial modeling in SolidWorks, Delcam PowerShape, Сatia, etc. The main principles of creating models are described, the advantages of the program and the scope of application are defined. 3D print-ing and scanning technologies are developing rapidly.However, there is currently no comprehensive methodological approach to the study of modern 3D technologies, when training specialists in technical areas.The main goal is to study the state of development and the field of use of modern 3D technologies in automobile transport and industrial engineering.The types and scope of use of 3D printers and scanners are analyzed. Positive and negative features of representatives of each type are determined.The main aspects of teaching the discipline "Modern 3D technologies" are considered. The methods of creating spatial models in the SolidWorks system are considered. The most advanced 3D printing technologies and materials used are de-scribed. The principle of operation and types of 3D scanners are reviewed.

Design Automation of a Two Scissors Lift

In this study, the design of a two scissors greenhouse lift trolley is considered. The maximum height of the platform from the ground is 3500 mm. A program developed in Visual BASIC to automate the design is introduced. The lift is modeled in SolidWorks (SW) and the finite element (FE) modal and static analyses are performed as an initial design first by using graphical user interface (GUI). The lift contains revolute joints and slider joints. A simply supported beam which has two revolute joints and a slider joint is studied to verify how to model the joints. Pim connectors are defined for revolute joints in SW-FE analysis. Spring connectors with very large values are defined between sliding faces in the normal direction for translational joints. The results obtained with solid finite elements in SW are compared with analytical results for the natural frequency and static analyses and it was observed that the results are in good agreement for the simply supported beam. 
 An Excel file where a main sheet contains the list of the bodies and all the geometric values is created after the initial design. The Excel file also contains sheets for each body. Body sheets have all the dimensions in the sketches and features. The dimension values in the cells of the body sheets are defined by formulas related to the geometric values given in the main sheet. Kinematic, kinetic, and revision of the SW model are performed by the design automation program. The FE analyses are done by GUI and the results are evaluated. If the results are not satisfactory, the geometric values are changed in Excel file and the analyses are repeated. The final design is obtained by the iteration easily. The automation program and the procedure developed in this work can be extended other scissors lifts.

Design and hybrid impedance control of a new compliant wrist rehabilitation device

Over a decade, wrist rehabilitation robots have been proved to be efficient in the rehabilitation of patients with stroke or wrist injuries. Wrist rehabilitation devices compensate for deficiencies in manual rehabilitation training and reduce the workload of physiotherapists with their repetitive and gradual training necessary to rehabilitate patients with wrist impairments properly. Two design approaches have been reported in literature for wrist rehabilitation robotic devices. In one design approach, the strategy of placing the actuators, either linear or rotary, on the forearm to minimise the weight and inertia has been proposed. This necessitates a use of sophisticated transmission systems. In the other design approach, rotary motors have been proposed to be placed directly on the wrist joints, which results in a high weight and inertia. In this paper, a new 2-DOF compliant wrist rehabilitation device that can achieve the flexion-extension and radial-ulnar rehabilitation movements compliantly is proposed. In the proposed design, two series elastic actuators (SEAs), each consists of a servomotor and a custom-designed series elastic unit, are proposed to be placed directly on the wrist joints. In order to minimise the inertia and the required torques, the device is counterweight balanced by optimising the centre of mass of the device in the SolidWorks model. Based on the device dynamics modelled by ADAMS software, hybrid position and force tracking impedance control with the incorporation of a disturbance observer controller for the rotary SEA is developed for position and force tracking through the different therapeutic exercises. The disturbance observer controller is incorporated for high precision force control and robustness against exogenous disturbances. Simulation results demonstrate high performance of the proposed wrist rehabilitation device in terms of precise position and force trajectories tracking and robustness against exogenous disturbance as well as patient safety during all therapeutic exercises.

Research on the Dynamic Response Properties of Nonlethal Projectiles for Injury Risk Assessment.

Based on the models already on the market, we have manufactured six types of nonlethal projectiles. We have made convex heads out of polyurethane foam (PUR) filled with mineral fillers like alumina (Al2O3) and montmorillonite (MMT). We chose a suitable holder for nonlethal projectiles. Also, we made a custom industrial model and used CAD modeling in SolidWorks to simulate the deformation of the nonlethal projectiles. The polymeric nonlethal projectile holders were then 3D-printed. We performed a dynamic mechanical analysis (DMA) and discussed the results. Likewise, we conducted ballistic impact experiments on nonlethal projectiles (XM1006) and nonlethal projectiles manufactured that were evaluated using a rigid wall and a pneumatic launcher. Furthermore, we looked at cell structure, the spread of the mean pore diameter, and the particle size distributions of the mineral fillers using scanning electron microscopy (SEM). We evaluated and discussed injury risks from nonlethal impacts. Data on nonlethal projectile lethality and safe impact speed are collected. This study explains how lab studies and real-world practice coexist through nonlethal projectile properties.

Design of a Foldable Solar Panel with Radial and Circumferential Folding Motion

This paper focuses on designing a foldable solar panel that can be folded both circumferentially and radially simultaneously. Most of the existing foldable solar panels have only one movement mode when folded. In contrast, the solar panel designed in this paper has two different movement modes when folded, which has the advantage of further reducing the area of the solar panel when it is fully folded. In this paper, the solar panel can achieve circumferential motion based on the motion principle of the folding fan, and the solar panel can achieve radial motion based on the principle of the slider mechanism. Then the two separate motions are unified by improving the scissors-like element structure. In addition, this paper adopts SolidWorks modeling, CAXA drawing, and calculation to prove the normal operation of the structure. Finally, the control variable method is used to analyze the structural skeleton's radial and circumferential folding capacity. The critical parameter α2 (the central angle when the structure is fully unfolded) is obtained, affecting the mechanism's contracting capacity. When α2 increases, the radial contraction ability of the structure first increases and then decreases, and the circumferential folding ability of the structure continues to increase. At the same time, the radial and circumferential shrinkage capabilities of the structure and the layout of the solar panel are comprehensively considered, and the value of α2 is obtained when the folding ratio is as small as possible.

Study of Locking Compression Plate Through Biodegradable Implant

Orthopaedic implant biomechanics research is booming, especially in bone fixation. Fixation involves securing a plate to a broken bone. The femur fractured mostly. Long bone fractures can be difficult to cure despite technological and medical breakthroughs. This study analyses the performance and optimal screw arrangement for biodegradable locking compression plate. This study compares biodegradable bone plate materials to identify the best (Iron, Zinc and Magnesium). SolidWorks models fracture repair plates and fixes them in a normal walking condition to a mid-ship fracture. Further, finite element analysis was performed on models with homogeneous and isotropic bone and plate. Simulation was done using COMSOL programme and screws. Idealized poroelastic 3D FE femoral model with 5 mm fracture gap and plate-screw design. We saw stress and displacement. The minimal von Mises stress and deformation for 6 screws. Under pure zinc and magnesium load, the highest von Mises stress was 7.94 MPa and the maximum deformation was 0.08 mm, proving that iron was the best material. Based on finite element analysis, the LCP can offer mechanical stability for comminuted fractures, fixing the bone block and promoting bone healing.

Design and Manufacture of Electric Car Chasis Frame for Two Passengers With Solidworks Modeling 2020

An electric car is a car that is driven by a DC motor using energy stored in thebattery. The use of electric cars is considered more effective in addition to notcausing air pollution and a simpler engine construction and as an alternativemeans of transportation. The frame/chassis is the main part of the car thatfunctions to support other components such as the engine, battery, steeringsystem, braking system, driver's seat and other vehicle equipment, and also asa vibration damper if the vehicle runs on various types of road surfaces andvarious modes of motion. From the vehicle, the frame used is a ladder framewhich has a simpler and stronger structure. This study aims to design andmanufacture the frame of an electric car and analyze the load received and themaximum load that the frame can withstand. This research begins with thedesign of the frame, then the assembly of the frame will be carried out thendata will be collected on the frame which will then be processed to determinethe load received by the frame and analyze the value of the welding stress onthe frame.

Biomechanical Analysis of Tibiofibular Syndesmosis Injury Fixation Methods: A Finite Element Analysis

The optimal treatment strategy after syndesmotic injuries is still controversial. In our study, we aimed to evaluate ideal fixation method in syndesmotic injury by using finite element analysis method. A 3D SolidWorks model file was created by taking computed tomography (CT) images of the area from the right foot base to the knee joint level of a healthy adult male. The intact model, injury model, and 8 different fixation models were created that 3.5 mm screw and suture-button were used in. The models were compared in terms of lateral fibular translation, posterior fibular translation and external rotation of fibula compared to tibia and stress values occurred on screws and suture-buttons. In the hybrid-1 model, lateral fibular translation and external fibular rotation values were obtained as close to the intact model. Von Mises stresses occurred in the screw (435.7 MPa) and suture-button (424.7 MPa) that used in hybrid-1 model was more than single screw at 4 cm model (316.8 MPa) and single suture-button at 2 cm model (160.7 MPa). In the Hybrid-1 model, the screw compensates for posterior fibular translation and external fibular rotation, while the suture-button compensates for lateral fibular translation. Also, the effect of the distal suture-button preventing diastasis in case of proximal screw failure, it was concluded that the hybrid-1 model can be used as a good treatment alternative in the surgical treatment of distal tibiofibular syndesmotic injuries.

Design and Analysis of a Novel Concept-Based Unmanned Aerial Vehicle with Ground Traversing Capability

Abstract Unmanned aerial vehicle (UAV) is a typical aircraft that is operated remotely by a human operator or autonomously by an on-board microcontroller. The UAV typically carries offensive ordnance, target designators, sensors or electronic transmitters designed for one or more applications. Such application can be in the field of defence surveillance, border patrol, search, bomb disposals, logistics and so forth. These UAVs are also being used in some other areas, such as medical purposes including for medicine delivery, rescue operations, agricultural applications and so on. However, these UAVs can only fly in the sky, and they cannot travel on the ground for other applications. Therefore, in this paper, we design and present the novel concept-based UAV, which can also travel on the ground and rough terrain as an unmanned ground vehicle (UGV). This means that according to our requirement, we can use this as a quadcopter and caterpillar wheel–based UGV using a single remote control unit. Further, the current study also briefly discusses the two-dimensional (2D) and three-dimensional (3D) SolidWorks models of the novel concept-based combined vehicle (UAV + UGV), together with a physical model of a combined vehicle (UAV + UGV) and its various components. Moreover, the kinematic analysis of a combined vehicle (UAV + UGV) has been studied, and the motion controlling kinematic equations have been derived. Then, the real-time aerial and ground motions and orientations and control-based experimental results of a combined vehicle (UAV + UGV) are presented to demonstrate the robustness and effectiveness of the proposed vehicle.

Comparative Analysis of Mine Shaft Hoisting Systems' Brake Temperature Using Finite Element Analysis (FEA).

This paper studies both the thermal and mechanical behavior of brake system models in the case of the emergency braking of a mine hoist model. Using a step-by-step approach inspired by studies conducted on small brake systems with high rotation speeds specific to road and rail vehicles, a comparative analysis using a computer simulation was performed for the two types of brakes of a mine hoist system. A Solidworks model was built for two configurations: the drum-and-shoe and the disc-and-pads, and it was imported to COMSOL Multiphysics, where the material properties and simulation parameters were defined. Simulations were performed for each configuration, first using a Heat transfer module in the solids to investigate the frictional heat. The results showed the locations of the hot points on the disc and on the drum, with the surface temperature reaching 97 °C on the disc and 115 to 159 °C on the drum. Next, simulations using a Structural Mechanics module were run to obtain the stress and deformation induced by the heat generated during braking. The von Mises stress of the drum-and-shoe brake occurred on the external surface of the drum and had a value of 2 × 108 N/m2. For the disc-and-pad brake, the stress occurred towards the edges of the brake pad contact and was 4 × 108 N/m2. Both values were under the yield stress of the passive brake element material. Regarding the deformations, for the drum-and-shoe brake, it appeared towards the outer boundary of the drum, being 0.45 mm, and for the disc-and-pad brake, it was situated at the external edge of the disc, being 0.25 mm. COMSOL Multiphysics allowed the evaluation of the thermo-mechanical behavior using noninvasive techniques since actual emergency braking testing on a working mine hoisting installation is not possible because of safety and logistic concerns.

Biomechanical Evaluation of Bone Atrophy and Implant Length in Four Implants Supporting Mandibular Full-Arch-Fixed Dentures.

Residual alveolar ridge resorption often occurs after tooth extraction, which causes issues requiring further prothesis rehabilitation. A treatment concept referred to as all-on-four, involving fixed dentures supported with four implants, was recently developed. The current study aimed to determine the effect of changing bone atrophy and implant length in all-on-four treatments on stress and strain in the surrounding bone of the implant. A three-dimensional finite element method was used in this research. The stress analysis was conducted with von Mises stress values. Two types of synthetic jawbone models with mild and moderate atrophy were used. Furthermore, two different implant lengths with a similar implant design and diameter were selected, and they were classified into eight models. Then, the bone model was assessed via a computed tomography (CT) scan and was transformed into a virtual model in Geomagic and SolidWorks with implant rebuilding. After modifying bone atrophy, the von Mises stresses in the surrounding bone of the implant were as follows: mild type 2 < mild type 3 < moderate type 3 < moderate type 4. The bone quantity change rate increased more than when bone conditions were limited. Compared with changes in implant lengths, the stresses in the peri-implant surrounding bone were generally higher in the 9 mm implant length group than in the 11.5 mm group. However, the results did not significantly differ. In conclusion, the von Mises stress and strain increased in the models with moderate atrophy and low-density trabecular bone. Hence, bone atrophy and its presurgical diagnosis in long-term implant prognosis are crucial.

Повышение энергоэффективности тентового укрытия для окрашивания и сушки крупногабаритных металлоконструкций

This paper investigates temperature modes of painting large metal structures in a tent-type drying chamber for the purpose of quality assurance and improving energy efficiency of the coating process. The research of several options of air removal out of a tent cover was performed. A SolidWorks model for a drying chamber with a large painted metal structure was developed in order to figure out temperature fields, air speed, and air trajectory. The model considers the joint effect of free and forced convection as well as aerodynamics of inner tent space on heating efficiency. The energy-saving design of the tent cover, which allows preheating air before the calorifier, has been proposed. As a result, a criterial equation has been obtained and energy efficiency optimization software has been developed.

Analysis of the Flow Pattern and Flow Rectification Measures of the Side-Intake Forebay in a Multi-Unit Pumping Station

To improve the problem of turbulence in the forebay of the lateral inlet pumping station, a typical lateral inlet pumping station project in Xuzhou, Jiangsu Province, China was taken as the research object. The forebay of the pumping station is a building connecting the river channel and the pumping station into the water tank. Based on the Reynolds-averaged Navier-Stokes (RANS) law and the k-ε turbulence model, the computational fluid dynamics method (CFD) technology compares and analyzes the numerical simulation with or without rectification measures for the forebay of the lateral intake pumping station when multiple units are operating. The three-dimensional model was created by SolidWorks modeling software and the numerical simulation simulated by CFX-ANSYS. To alter the flow pattern in the forebay of the pumping station, various rectification measures were chosen. Internal rectification flow patterns in the forebay under multiple plans, uniformity of flow velocity distribution in the measuring section, and vortex area reduction rates are investigated and compared. Based on the analysis and comparison of numerical simulation results, when the parabolic wall and some rectification piers are set significantly it improves the flow pattern of the forebay of the lateral inlet pumping station. It also makes the flow pattern of the inlet pool better and increases the uniformity of the flow velocity distribution by 8%. Further, it reduced the vortex area by 70%, effectively improving the operating efficiency of the pump. The research results of this paper provide a technical reference for the improvement of the flow pattern in the forebay of the lateral inlet pumping station.

Study of the influence of the housing on the cooling efficiency of the piezoceramic electroacoustic Langevin-type transducer

The object of research is thermal processes in Langevin-type piezoceramic electroacoustic transducers (PET), taking into account the housing. The piezoceramic electroacoustic transducers heat up during operation. Overheating of the converter leads to negative consequences, accompanied by a change in the parameters, characteristics of the device, as well as the failure of the converter. Or limitation on the duration and mode of operation, output power, current, amplitude and speed of oscillation of the converter. The paper investigates the effect of the housing on the temperature field of a Langevin-type PET by the finite element method, using modeling in SolidWorks. The results of temperature reduction of such cooling methods are shown: – filling the housing cavity with electrical insulating liquid, gas, a mixture of thermal paste; – use of holes in the housing; – changing the shape of the rear cover to have radiator side fins, vertical radiator fins, cylindrical radiator fins; – heat-resistant layer; – use of active air cooling at three different speeds. The most efficient 53 % and a uniform temperature field were found when filling with a mixture of thermal paste, but this solution is accompanied by additional experiments and a preparatory stage with the mixture. The cooling efficiency of 47 % was provided by active cooling – blowing with air, and this method requires additional equipment. Filling with insulating liquid gave a cooling efficiency of 27 % – an optimal result that does not require expensive investments. Slow blowing of the housing or adding only holes resulted in a decrease in the maximum heating temperature from 10 to 20 %, therefore, if the PET design allows the presence of holes, then it is necessary to rationally place them. Changing the shape of the back plate, heat-absorbing element, filling the housing with gas gave an efficiency decrease in the maximum temperature by 6–8 % compared to a closed housing with air. The research results make it possible to choose the optimal option for reducing the heating temperature of the Langevin-type PET to increase its efficiency and long-term trouble-free operation.

Study of the effects of link tolerances to estimate mechanical errors in 3-RRS parallel manipulator

This paper presents the mechanical error estimation under the effects of link tolerances in a 3-degree-of-freedom (DoF) 3-RRS Spatial Parallel Manipulator (SPM). Position level kinematic analysis and workspace analysis in the form of reachable and orientation workspace are carried out initially. Then, the effect of link tolerances on individual link is studied at the position of mid-point and orientation of the movable platform. The corresponding mechanical errors are estimated. The effect of link tolerance variation is studied to know the pattern of mechanical error. The 3-D CAD model in SolidWorks is used to validate the results. The conclusions are drawn that lead to error minimization at the tolerance design stage.

STRUCTURAL ANALYSIS OF PELTON BUCKET WITH AISI 1020 STEEL AND STRUCTURAL STEEL MATERIAL BY USING SOLID WORKS AND ANSYS

Pelton Turbine is the hydraulic turbine, type of impulse turbine. An Impulse turbine generally suitable for the low flow rate and high head. The discharge water from the nozzle impacts the bucket of the Pelton wheel to produce the hydropower. There are some reasons behind the failure of the Pelton bucket like as: silt erosion, cavitation, fatigue etc. The main reason behind the fatigue failure is the material property and stress concentrations. A high concentration of stresses occurs at the root of the bucket due to its cantilever structure each time a bucket experiences the impact of the water jet. In this work, there are two materials AISI 1020 Steel and Structural Steel have been considered for analyzing the Pelton bucket. For the 3D CAD model of Pelton bucket Solid works 14.0 and for simulation work ANSYS 15.0 software has been used. In simulation work analysis types were static structural. This paper focuses on von-mises stress, total deformation of von-mises strain to analyze the suitable material for the Pelton bucket. From the obtained results it has been observed that among both materials Structural Steel is suitable for bucket due to low-stress concentration, total deformation and strain.

A Paradigm Shift in Critical Care Infrastructure in Complex Settings: Evaluating an Ultraportable Operating Room to Improve Field Surgical Safety.

Scarcity of operating rooms and personal protective equipment in far-forward field settings make surgical infections a potential concern for combat mortality and morbidity. Surgical and transport personnel also face infectious risks from bodily fluid exposures. Our study aimed to describe the serial, proof-of-concept testing of the SurgiBox technology: an inflatable sterile environment that addresses the aforementioned problems, fits on gurneys and backpacks, and drapes over incisions. The SurgiBox environmental control unit and inflatable enclosure were optimized over five generations based on iterative feedback from stakeholders experienced in surgery in austere settings. The airflow system was developed by analytic modeling, verified through in silico modeling in SOLIDWORKS, and confirmed with prototype smoke-trail checking. Particulate counts evaluated the enclosure's ability to control and mitigate users' exposures to potentially infectious contaminants from the surgical field in various settings. SurgiBox enclosures were setup over a mannequin's torso, in a configuration and position for either thoracic or abdominal surgery. A particle counter was serially positioned in sternotomy and laparotomy positions, as well as bilateral flank positions. This setup was repeated with open ports exposing the enclosure to the external environment. To simulate stress scenarios, sampling was repeated with enclosure measurements during an increase in external particulate concentration. The airflow technology effectively kept contaminants away from the incision and maintained a pressure differential to reduce particle entry. Benchtop testing demonstrated that even when ports were opened or the external environment had high contaminant burden, the enclosed surgical field consistently registered 0 particle count in all positions. Time from kit opening to incision averaged 54.5 seconds, with the rate-limiting step being connecting the environmental control unit to the enclosure. The portable kit weighted 5.9 lbs. Analytic, in silico, and mechanical airflow modeling and benchtop testing have helped to quantify the SurgiBox system's reliability in creating and maintaining an operating room-quality surgical field within the enclosure as well as protecting the surgical team outside the enclosure. More recent and ongoing work has focused on specifying optimal use settings in the casualty chain of care, expanding support for circumferential procedures, automating airflow control, and accelerating system setup. SurgiBox's ultimate goal is to take timely, safe surgery to patients in even the most austere of settings.

Surface modeling and analysis of high-speed ultrasonic vibration cutting

High-speed ultrasonic vibration cutting has been proven to be effective in prolonging tool life, as well as reducing cutting force and cutting temperature at certain cutting speeds, which is higher than both the critical cutting speed of traditional ultrasonic vibration cutting and the range of conventional high-speed cutting in recent research. However, the surface topography results from the periodic sinuous tool vibration trajectory, and its influence on machined surface roughness, remains unclear. Therefore, in this article, the modeling and analysis of the surface topography and roughness are developed first. Then, simulations conducted through MATLAB calculations, SOLIDWORKS modeling, and cutting experiments are conducted to investigate the influences of the feed rate and the phase shift between the adjacent tool trajectories on the surface roughness. The results indicate that optimal surface roughness can be obtained under the conditions of a small feed rate (0.005 mm/r) and a phase shift of 180°. In this condition, the surface finish can reach Ra < 0.4 μm and realize finishing machining. In addition, compared with conventional cutting, high-speed ultrasonic vibration cutting can achieve the same quality at a cutting speed two times that of conventional cutting. Consequently, a better surface quality can be obtained through high-speed ultrasonic vibration cutting, due to the decrease of surface roughness compared with that of conventional cutting.

Design optimization of friction lining of a clutch plate

Clutch is a very important part of the proper functionality of the automotive power train, the clutch experiences high pressure, torsional and thermal loads. Therefore, clutch friction material has to be selected and the designed Objective is to select the best friction material whose performance is tested under the stress and thermal loads in ANSYS. Multiple materials are selected of which some are the old ones and the new materials that are considered their performance are compared to the old ones. The first thing required to select is the target vehicle and its clutch plate make to set the design constraints then in accordance with the uniform pressure and wear theory under constant peak torque transmission scenario varying axial loads are determined. The analysis is completed through FEA in Ansys and Solid model in Solidworks. At last, the results for different material friction lining and their respective performance are tabulated and discussed in detail, and finally, the conclusion is set, stating the best material for clutch friction lining for the light commercial vehicle. Methodology identified such that the scope and findings of the research can also be extended to other vehicle models.

Вплив форми кованого однорогого гака на його ефективність

The article analyzes the cargo forged unicorn hook. The design parameters of the product are substantiated by building a solid model of the hook. The line of cargo hooks with the changed form of sections which theoretically allows to reduce weight by 10% at preservation of loading capacity is offered. Comparison of standards shows that at equal loading capacity at identical classes and groups of classification the size and mass characteristics of products differ in times, and not in all cases in favor of standard hooks. Operational tests show that the shape of the hook must ensure its minimum weight with sufficient strength, if possible the same in all sections when the operating conditions and manufacturing technology. It was found that the contours of the upper and lower parts of the cross sections of the hooks are not subject to change. The geometric ratios of the cross-sectional dimensions of the hooks, as well as the threaded part can be considered determined theoretically and experimentally as optimal. Changing the contour is carried out by replacing the rectilinear sides of the trapezoid sections with curved ones. The obtained pictures of stress distribution in the hook body make it possible to choose the path of design optimization in the direction of changing the contours of the equatorial and meridional sections of the fourth quadrant of the hook contour. The proposed change of the contour is carried out by replacing the rectilinear sides of the trapezoidal sections with curved ones. The stress-strain state with visualization and stress distribution is presented, the parameters of the hook are substantiated by building a solid model in the CAD complex Solidworks. The study of the stress distribution pattern made it possible to propose cross-sectional shapes with the subsequent calculation of the stress-strain state of the created model. Material consumption efficiency due to the optimization increases by 10.8% without reducing the load capacity. The changes in the maximum displacement in the proposed model are insignificant (2.55 mm vs. 2.33 mm in the model GOST 2105-75). Recommendations proposed based on the study of one model configuration can be extended to others, taking into account the technology of manufacturing the product.