摘要
建立了以板单元为基本单元的车架有限元分析模型 ;利用有限元分析软件 AL GOR FEAS对其进行了静态、自由振动和随机振动分析 ;计算结果与实验测试数据进行了对比 ,实验数据验证了计算的正确性 ;找出了该车架裂纹过早出现的原因 ;有限元分析结果和实验结果与车架在实际使用中出现的车架异常断裂情况相吻合 ;给出了对该种车架结构改造的方法。
In this paper, the FEA model of the vehicle frame is established by taking plate unit as basic unit. The analysis of static, dynamic and random vibration is carried out by using the ALGOR FEAS. The result of calculation is contrasted with that of the experiment. The calculation result is verified by the experiment. The reasons for vehicle frame fatigue crack appearing in early stage are found out. The results of FEA and the experiment agree with that of the vehicle frame abnormal rupture in practice. The ways for the reconstruction of the vehicle frame structure are presented.
出处
《机械科学与技术》
CSCD
北大核心
2002年第3期380-383,386,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金 (重大 )项目 (19990 5 10 )资助
关键词
车架
有限元分析
随机振动
疲劳裂纹
模态分析
自卸汽车
Vehicle frame
Finite element analysis(FEA)
Random vibration
Fatigue crack
Modal analysis
