Simulation Analysis Software Research Articles

Study on Lane Changing Characteristics of Double-Articulated Bus Based on ADAMS

In this paper, using mechanical system dynamic simulation analysis software ADAMS, we create a multi-system dynamical model of an oversize double-articulated urban bus based on multi-body system. And then, we conduct the simulation test of changing lane of this vehicle with different front wheel angle for studying its lane changing characteristics as well as the influence degree to the surrounding vehicles; give a comparison analysis of the simulation result and the sample vehicle road test result, and verify the correctness and reasonability of the created virtual prototype model. The study result shows that the created digitized virtual prototype can effectively analyze the lane changing characteristics of the oversize double-articulated bus.

Survey to Automobile Electromagnetic Compatibility Simulation Software

With the rapid developments of computer technology and computing electromagnetism, it is possible to simulate the electromagnetic compatibility of automobiles. At the beginning of the design, electromagnetic compatibility simulation analysis of automobiles can not only shorten the research cycle, but also reduce the cost. In this paper, we summarized the current commercial electromagnetic compatibility simulation analysis software, analyzed the features and applied algorithms of each software, and gave the simulation examples of Ansoft HFSS and FEKO.

Applying Six Sigma to Quality Improvement in Construction

Taiwan is in a seismically active zone because it is located in the earthquake-prone Pacific ring of fire. The cracks in lightweight partition walls caused by frequent earthquakes decrease customer satisfaction and increase repair costs in the case company. This research demonstrates how a Six Sigma team can determine and improve the key input variables affecting the cracks in lightweight partition walls. A case study methodology is used in this research to illustrate the tools of Six Sigma by using the project charter to define problems, by using tools of process mapping to display all the input and output variables affecting cracks in lightweight partition walls, by using the C&E (cause-and-effect) Matrix to select highly correlated input variables, and by using failure modes and effects analysis (FMEA) to identify causes of the cracks. Unlike conventional Six Sigma, finite-element analysis (FEA) simulation software ABAQUS was used instead of statistical tools to verify variables and to identify initial causes of cracks because data collecting was time consuming. The results showed that a 1-cm preset spacing between the board and the main structure substantially reduces cracks caused by earthquakes. A new earthquake-proof construction method has been developed based on the finding of this research and was recently granted a new patent (M 431196) by the Intelligent Property Office in Taiwan.

Modeling and Simulation of Valve-controlled Cylinder System Based on Bond Graph

AMESim is a high performance modeling, simulation and dynamic analysis software. Based on the bond graph theory and the principle of hydraulic control, a simulation model of valve-controlled cylinder system in EPS fatigue testing bench is established by using AMESim software. By changing different factors of the hydraulic system and setting different target wave curves, the system effects with different conditions are discussed and the simulation results provide a theoretical guidance for modeling optimization.

A Study of Simulation Experiment of Car Steering Stability Based on ADAMS

Build a whole car model with ADAMS/Car, a simulation analysis software of mechanical kinetics to perform simulation experiment of car steering stability. Design and carry out experiment of snaking motion and turning braking. Prove the correctness of simulation model through analysis of the findings of experiment and comparison of them with the findings of real car experiment.

Some Studies on Forming Optimization with Genetic Algorithm

Forming is a compression-tension process involving wide spectrum of operations and flow conditions. The result of the process depends on the large number of parameters and their interdependence. The selection of various parameters is still based on trial and error methods. In this paper the authors presents a new approach to optimize the geometry parameters of circular components, process parameters such as blank holder pressure and coefficient of friction etc. The optimization problem has been formulated with the objective of optimizing the maximum forming load required in Forming. Genetic algorithm is used for the optimization purpose to minimize the drawing load and to optimize the process parameters. A finite element analysis simulation software Fast Form Advanced is used for the validations of the results after optimization.

Dynamical and system-wide properties of linear flow-quantified food webs

This paper analyses the transient dynamics, steady states, and a set of diagnostic system-wide properties of a linear flow-quantified pastoral food web from the Chernivtsi Region of Ukraine. The web in question is one of 31 so-described; it contains 86 nodes and 496 links. On-line simulation and network analysis software EcoNet was used to quantify transient dynamics, steady states, and eleven system-wide index parameters. Food-web flows were classified into inputs, interior flows, and outputs. The last two (endogenous) were represented by linear, mass-balance, flow coefficients. The three sets, inputs plus these coefficients, were systematically manipulated in their entirety in different combinations over seven orders of magnitude to determine their effects on system properties. The results of these trials are described and interpreted. They show that linear descriptions of empirical food webs harbor considerable dynamic and relational complexity.

효율적인 듀얼 사이클을 위한 야드 트랙터 통제 방법

오늘날 글로벌 수 출입 공급망 내에서 항만 하역작업의 효율성은 아주 중요하다. 해상운송에서는 컨테이너화와 더불어 늘어나는 화물량을 극복하기 위해서 초대형선의 운항이 일반화 되고 있다. 따라서 컨테이너 터미널의 관리자들은 안벽작업의 효율성을 극대화하기 위하여 더블 사이클과 듀얼 사이클 방법을 시도하고 있다. 또한, 야드 트랙터의 할당의 효율성을 높이기 위해서 야드 트랙터 풀링 방법이 제시되었다. 본 논문에서는 기존의 풀링 방법들과 듀얼 사이클을 고려한 풀링 방법의 비교를 통해서 듀얼 사이클의 효율성을 분석하였다. YT 할당 모형은 시뮬레이션 분석 소프트웨어인 Arena를 이용하여 수립되었다. 실험결과 듀얼 사이클이 많은 것이 항상 크레인 생산성을 높이는 것은 아닌 것으로 분석되었다. Recent global supply chain, improving the efficiency of container shipping process is very important. In the overseas shipping of goods, the voyage of super containership is common to overcome amount of increasing cargo. Thus, container terminal managers make an experiment on the double cycle and dual cycle operation, which ship loading and unloading were carried out simultaneously, for maximizing the productivity of quay side. Yard Tractors(YTs) pooling methods also are introduced for increasing the efficiency of assignment of YTs. In this paper, we analyzed the efficiency of dual cycling through comparing existing pooling methods with the modified method for the dual cycling. We developed a simulation model using simulation analysis software, Arena. The result of experiment shown that the more dual cycling don't always increase the gross crane rate(GCR), which means productivity of quay cranes(QCs) per hour.

Effect of plate curvature on blast response of aluminum panels

Experimental and numerical studies were conducted to understand the effect of plate curvature on blast response of aluminum panels. A shock tube apparatus was utilized to impart controlled shock loading to aluminum 2024-T3 panels having three different radii of curvatures: infinity (panel A), 304.8 mm (panel B), and 111.8 mm (panel C). Panels with dimensions of 203.2 mm × 203.2 mm × 2 mm were held with mixed boundary conditions before applying the shock loading. A 3D Digital Image Correlation (DIC) technique coupled with high speed photography was used to obtain out-of-plane deflection and velocity, as well as in-plane strain on the back face of the panels. Macroscopic postmortem analysis was performed to compare the yielding and plastic deformation in the three panels. The results showed that panel C had the least plastic deformation and yielding as compared to the other panels. A dynamic computational simulation that incorporates the fluid-structure interaction was also conducted to evaluate the panel response. The computational study utilized the Dynamic System Mechanics Analysis Simulation (DYSMAS) software. The model consisted of the shock tube wall, the aluminum plate, and the air (both internal and external) to the tube walls. The numerical results were compared to the experimental data. The comparison between the experimental results and the numerical simulation showed a high level of correlation using the Russell error measure.

Investigation on the Effect of Infilled Walls Utilizing Response Spectrum Analysis for Steel Staggered-Truss System

Considering the structure type of the steel staggered-truss (SST) system, the effect of infilled walls will be major and need to be studied amply, some scientific design regulations need to be found for referrence. Based on two different 3D models considering or ignoring the stiffness of infilled walls (SIW), a numerical investigation is presented on the structural behaviors of the SST system utilizing the finite element 3D simulation analysis soft ware ETABS. The longitudinal structure is asymmetrical due to the SIW, it causes the torsion forces in the building. Comparing to the different results of response spectrum analysis, including storey drift and equivalent base shear under frequent earth quake and rare earth quake, some conclusions were made, including the capacity of the SST system under seismic load and the effect of the SIW for SST system. The increased base shear force factors due to the effect of the SIW were suggested for SST structure design, it is different from the other steel structure types.

Northern Livable Settlements Planning and Design of Low-Carbon - In Yancheng, Suqian, Area as an Example

Settlements planning and design of the settlements are reasonably livable low-carbon has a significant impact from the settlement planning and design of the angles, the use of field measurement and simulation software for energy analysis and statistics, research for Northern livable carbon settlements planning and design. Northern livable for the future development of low-carbon settlements provide a reference.

Northern Livable Settlements Planning and Design of Low-Carbon - In Yancheng, Suqian, Area as an Example

Settlements planning and design of the settlements are reasonably livable low-carbon has a significant impact from the settlement planning and design of the angles, the use of field measurement and simulation software for energy analysis and statistics, research for Northern livable carbon settlements planning and design. Northern livable for the future development of low-carbon settlements provide a reference.

Effect Analysis of Different Exhaust Velocity on Fire Smoke Control in Subway Tunnel

Taking a subway tunnel as the research object and based on the CFD simulation method, this paper adopts a large eddy simulation analysis software FDS to simulate and analyze the effect of exhaust velocity on fire smoke control under the condition of the same longitudinal ventilation velocity in subway tunnel. The simulated results can provide some reference to design institutes in the selection of exhaust fan. While the longitudinal ventilation velocity set as 1m/s, the simulation results demonstrate that a quite good smoke control effect could be achieved when the exhaust velocity reaches 5 m/s in the smoke exhaust duct

Coupling Analysis on Hydrauic Press and Forming Moulds of the Containment of Nuclear Power Reactor

Based on actual production, the each mould in the production line of containment of nuclear power reactor and the frame of THP22-4000 hydraulic press was modeled by coupling method. By using the finite element analysis simulation software ANSYS Workbench, the stiffness and strength of each coupling models were analyzed by node-coupling method. According to the results having been analyzed formerly, the distribution of stress and strain of each coupling models were studied, and the influence rules of assembly area of mould on workbench and close-height of mould on coupling stiffness were drawn, so as to guide the mold and the hydraulic structure design and optimization. Under the prerequisite of ensuring the forming precision of containment, it would be possible to configure and optimize scientifically and rationally the structure of forming molds and equipments, lower the costs of productions, and obtain higher economic benefits.

The Simulation of New Arc Welding Power Based on Matlab

Arc welding technology is an important part of modern welding technology, and providing the energy of arc welding power source is welding technology at the core. The traditional arc welding power source is backward in technology and large amount of consumables, so arc welding inverter power has become the direction of its development. With the enhanced awareness of energy saving and environmental protection, this paper concentrates on new high power factor of arc welding power source as the research object, and introduces the main structure of high-power arc welding power source. At the same time, using Matlab software for modeling and simulation analysis on the main circuit and control circuit, the simulation results comply with the design requirements and verify the feasibility of the system design.

The Simulation Research of New Induction Heating Power

Along with the maturity of power electronic technology continuously, induction heating technology with its many advantages has been widely used and developed rapidly. However, due to the disadvantages of series resonant induction heating power, such as low input power factor, great grid pollution, it will bring many hazards. This article will make induction heating power network-side input power factor approximate unit power factor with using Active power factor correction technique, and it makes the net side current and voltage be same phase standard sine wave , reduces the network pollution; and with using DC chopper circuit to complete the adjustment of DC voltage, it achieves induction heating power changes. At the same time, using Matlab software for modeling and simulation analysis on the main circuit and control circuit, the simulation results comply with the design requirements and verify the feasibility of the system design.

Simulation Study on a Controllable Mechanism Type Novel Planar 3-DOF Mechanical Excavator

This paper introduces a simulation study on the executive mechanism of a recent invented controllable mechanism type novel planar 3-DOF mechanical excavator using simulation analysis software MSC.ADAMS. A virtual prototype model is established first, based on which the forward kinematics simulation is carried out employing the DIM functions to achieve an output trajectory similar to the excavating process of a flexible hydraulic excavator. Subsequently, an inverse kinematics simulation is performed accomplishing a given V type output trajectory. Angular displacements, velocities and accelerations of the three input variables are obtained. Results of the simulation study may provide some useful references for further researches such as dimensional synthesis, dynamics and design of the controller of the new type of mechanical excavator.

Kinematics Simulation on a Kind of Parallel Mechanism

The kinematics simulation of 6-PURU parallel mechanism was made based on dynamics simulation analysis software ADAMS, and the simulation method and steps were introduced too. Using UG to establish 6-PURU parallel mechanism soiled model, and the geometry model parasolid format was payloaded to ADAMS environment and established virtual prototyping model, by added some drivers and SPLINE curves, the model was conversed with positive kinematics simulation. This method avoided to establish and solve complex kinematics equations, simplified the design and development work of the parallel robot, but also provided theoretical basis for adjustment and control of prototype.

Design of an Eco-Power Automobile Body Made from Green Composite and its Structural Optimization in FEA

Ramie (Boehmeria nivea) is a kind of natural fiber that has good mechanical and environmental friendly properties. The fabric woven by ramie yarns shows excellent dimensional stability. Polypropylene (PP) was used as matrix for its recyclable and thermoplastic properties. PP is the widely used thermoplastics for composite and currently it is very common in building, construction, furniture and automotive products. Since the eco-power automobile body was designed for light-weight and low fuel consumption, there seems to be high potential application to automobile industry for ramie-PP composite. Therefore, in this paper, we developed a constitution of fabric to form stable structure reinforcement. The reinforcement and PP particles were treated in vulcanizer by thermo-compression technology. The fundamental mechanical properties of the composite were tested for finite element analysis (FEA). An eco-power automobile body was designed in Pro/E® Wildfire 5.0 and transferred to Finite Element Analysis Software for material and structural simulation analysis. Structural improvement and sizing optimization of the eco-power automobile body model were simulated to judge the material application and its structure effectiveness.

Finite Element Analysis on High Embankment of Widened Road

By means of finite element method software simulation analysis, using strength reduction finite element method analyse factor of safety of embankments. Nowadays most finite element program is analyzed in the perfect elasto-plastic with the Mohr-Coulomb not equiangular hexagon circumcircle Drucker-Prager yield criterion, it have margin of error with not equiangular hexagon in π-plane, so we use Mohr-Coulomb equivalent area circle D-P yield criterion instead of it. Calculate conversion coefficient of two safety factor under different yield criterion. Using safety factor through finite element software by strength reduction multiply by conversion coefficient, get new safety factor. Through the example of high embankment of old road widened in Shanghai-Chengdu expressway Hejiaping cable section K2+ 710~890, validation of this method calculated the accuracy of the safety factor, the results show that the new factor of safety closer to the true value.