摘要
提出了一种道路模拟试验与刚柔耦合多体系统动力学模型相结合的摩托车车架疲劳寿命分析方法。通过搭建多通道道路模拟试验台,利用道路模拟远程参数控制技术复现实际路面状况,迭代得到近似实际路面激励的等效激励信号作为虚拟试验平台的驱动信号。建立试验台架刚柔耦合模型,以等效激励信号为输入,仿真获取结构薄弱点的载荷历程。基于名义应力法和疲劳累积损伤理论,在MSC.FATIGUE软件中建立车架的疲劳分析模型,并以虚拟计算得到的柔性体模型的模态参与因子函数作为的边界载荷,得到车架的疲劳损伤分布并预估车架疲劳寿命。
A motorcycle frame durability analysis method combing road simulation test with rigid-flexible coupled multi-body dynamics model is proposed.Specifically,through building multi-channel road simulation test bench,the real road conditions are reproduced with road simulation technique and by iteration the excitation signals are obtained as boundary conditions for Virtual Test Bench.A rigid-flexible coupling model for complete test bench is built and the loading histories at the weak points are obtained by simulation.A fatigue analysis model of the motorcycle frame is built with MSC.FATIGUE software,which is based on the nominal stress method and fatigue damage cumulative theory.Taking the modal participation factor function of the model as simulation input signal,the fatigue damage distribution of the frame is obtained and the fatigue life of the frame is evaluated.
作者
蔺朝莉
杨平
彭勇
LIN Zhaoli;YANG Ping;PENG Yong(Chong qing College of Electronic Engineering,Chongqing 400054,China;Chongqing Radio and TV University,College of Intelligent Manufacturing and Automobile,Chongqing 401520,China;Chongqing Changan Automobile Co.Ltd.,Chongqing 400102,China)
出处
《重庆理工大学学报（自然科学）》
CAS
北大核心
2019年第8期65-69,77,共6页
Journal of Chongqing University of Technology：Natural Science
基金
重庆市教育委员会科学技术研究项目(KJ1729410)
2018年度重庆市教委科学技术研究计划青年项目“新能源汽车轮毂电机智能差速控制研究”
重庆电子工程职业学院科研平台项目
关键词
虚拟试验台
模拟迭代
车架
疲劳寿命
virtual test bench
simulation iteration
motorcycle frame
fatigue life
