某承载式车身发动机机架模态分析

摘要

基于三维建模软件CATIA建立某承载式车身发动机机架模型，将其导入Hypermesh软件中建立有限元模型，利用Patran软件对此发动机机架进行模态分析，得到其固有频率和相应的各阶振型。结果表明，此型号发动机机架不会因路面颠簸及发动机颤振产生共振，安全性能可靠。%Firstly ,the three dimensional model of a car body engine frame was established in CATIA .Then ,the finite element model of the engine frame was established by Hypermesh .Finally ,Patran software was applied to the engine frame modal analysis ,and the natural frequency and the corresponding mode of vibration were got .The results show that this type of engine frame will not generate resonance .