Multi-Objective Structural Optimization of Frame of Double-Layer Vertical Parking Device with Semi Ground and Semi Rail
In order to realize the lightweight of the frame structure of double-layer vertical parking device with semi ground and semi rail,a3D model of the parking device frame was built by UG,and was imported into ANSYS Workbench for static analysis and modal analysis.The equivalent stress,total deformation,safety factor nephogram and the first 6 natural modes and frequen-cies were obtained.The redundant and weak parts of the frame structure were found.Taking the width,length and thickness of the cross-section of the frame beam and column as the optimization variables,taking the quality,stress,deformation and safety factor as the optimization objectives,and taking the section size range,allowable stress and minimum safety factor as the con-straint conditions,the optimization mathematical model were established.Then,the experimental design was carried out in the re-sponse surface optimization module of ANSYS Workbench,and the multi-objective genetic algorithm was used to optimize the cross-section size of the frame beam and column,and the Pareto optimal solution set and candidate design points of the cross-section size were obtained.On this basis,the overall optimization design scheme of the frame was proposed and the static verifica-tion was completed.The results show that the overall weight of the optimized frame is reduced from 988.731kg to 664.645kg,with a decrease rate of 32.78%.The optimization effect is remarkable,and its strength,deformation and safety factor all meet the safety requirements.
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NSTL
万方数据
维普
