基于非线性有限元法的摩托车消声器强度分析

Analysis of Muffler Strength of Motorcycle based on Nonlinear Finite Element Method

本文以非线性有限元分析理论为基础,根据减震胶套材料力学实验所获得的数据,选取Mooney—Rivilin超弹性本构模型得出材料的基本力学参数,并通过整车台架振动测试获得摩托车消声器在发动机激励作用下的振动加速度,在此基础上,建立消声器非线性有限元仿真模型,模拟结构在发动机激励作用下的应力分布趋势,从而判断该结构满足强度使用要求,并通过试验验证了该方案的可行性。

The paper introduces the establishment of non-linear finite element simulation model based on the data from shock-absorbing rubber sleeve materials and the basic mechanical parameters from Mooney-Rivilin hyperelastic constitutive model and the vibration acceleration of the muffler from the bench test.The nonlinear finite element simulation model of the muffler is established to simulate the stress distribution trend of the structure under the action of the engine,so as to judge whether the structure meets the strength requirements and passes the test.The feasibility of the program is verified by the test.