智轨电车座椅骨架强度分析及结构优化

Strength analysis and structural optimization of ART seat skeleton structure

为实现智轨电车减重降本的目标,对座椅骨架进行强度分析及结构的优化设计。首先利用Creo和HyperMesh对座椅骨架进行三维建模和网格划分;然后将有限元模型导入ANSYS进行模态分析和强度分析,得到座椅骨架的前六阶固有频率和最大应力;最后根据有限元结果进行结构优化,以实现座椅骨架的轻量化设计。对比优化前后的有限元计算结果,新型座椅骨架不仅避开了人体最敏感频率和路面激励频率,而且在保证强度满足要求的情况下,实现了智轨电车座椅骨架的减重降本。

In order achieve the goal of reducing the weight and cost of ART,the strength analysis and structural optimization design of the seat skeleton structure were carried out.Firstly,Creo and HyperMesh were used to perform three-dimensional modeling and meshing of the seat skeleton,and then the finite element model was imported into ANSYS for modal analysis and strength analysis to obtain the first six natural frequencies and maximum stress.Finally,the structure was optimized according to the finite element results to realized the lightweight design of the seat skeleton structure.Comparing the finite element calculation results before and after optimization,the new seat skeleton structure not only avoids the most sensitive frequency of human body and the road surface excitation frequency,but reduces the weight and cost of ART seat skeleton structure while ensuring that the strength meets the requirements.