基于ANSYS的土壤采集车车厢骨架研究

ANSYS-based Soil Collection Vehicle Carriage Skeleton Study

此文章的目标是针对土壤采集车车厢骨架的轻量化研究。针对从约翰迪尔825i型改良而来的土地采集车辆,利用ANSYS workbench 19.1有限元分析软件,对土地采集车车厢骨架构件进行了静力学与动力学的分析,结果表明,在验证了网格划分质量的情况下,骨架的最大应力为41.274 MPa,证明这种改造后的车体骨架不会折断;同时,对该结构进行了动态分析,发现其一阶模态为28.145 Hz,所有六阶模态与道路最大激发频率25Hz均不会重合,因此在工作状态下不会产生共振疲劳。之后,在保证了网格划分质量的前提下,尝试采用拓扑优化的方式,在保留原车架结构质量约60%的情况下令其所受强度低于结构钢屈服强度,在工作情况下可用。

The objective of this paper is to study the lightweight of the skeleton of the soil collection vehicle.For the improved land acquisition vehicle from John Deere 825i,ANSYS workbench 19.1 finite element analysis software was used to analyze the statics and dynamics of the land acquisition vehicle cabin bone components,and the results showed that the maximum stress of the skeleton was 41.274 MPa after verifying the meshing quality,which proved that the modified car body skeleton would not break.At the same time,the dynamic analysis of the structure shows that its first-order mode is 28.145 Hz,and all sixth-order modes do not coincide with the maximum excitation frequency of 25Hz of the road,so there is no resonance fatigue in the working state.Then,under the premise of ensuring the quality of meshing,a topology optimization method is tried to make its strength lower than the yield strength of structural steel while retaining about 60%of the original frame structural mass,which can be used under working conditions.