摘要
建立了以板壳单元为基本单元的半挂牵引车车架有限元分析模型,应用NASTRAN有限元分析软件对车架进行了模态分析。计算了该车架在自由状态下的模态参数,并分析了其振动特性和对整车性能的影响。计算结果与试验结果对比分析表明,所建立的有限元模型和分析方法是可行的,可为车架结构的进一步改进提供依据。
It uses FEA to build the model of frame of a semi- trailer towing vehicle. Based on the modal frequencies, modal damping, modal shapes and experimental modal analysis, it analyzes the dynamic characteristics of the frame of the semi- trailer towing vehicle. The comparisons between simulation results and the results obtained from experimental modal analysis eonfirme that the FEM model is reliable and the model could be used to improve the design the frame.
关键词
半挂牵引车
车架
有限元
模态分析
Semi- trailer
Frame
Finite Element Analysis
Modal Analysis
