工程设计学报2011，Vol.18Issue(2)：120-123,129,5.DOI:10.3785/j.issn.1006-754X.2011.02.009
铝合金轮毂弯曲疲劳试验的有限元模型
Finite element model of bending fatigue test of aluminum-alloy wheel
摘要
Abstract
In the development stage of aluminum-alloy wheel, the bendingfatigue test is one of thebench tests that must be passed, to which the trial casting wheel on a small batch basis was put.To avoid experiments of blindness, reduce the number of tests, cut down the experiment cost and improve the reliability, the finite element method is applied, which is one of the advanced technologies in design stage. To apply the technology correctly, the effective calculation model must be built to simulate bench tests. Based on the theoretical analysis and practical case, considering the nonlinear contact relations from pretightening of blot and the material of difference between loading bar and wheel, three finite element models of bending fatigue tests were built, such as integral linear elastic model with loading bar and wheel in the same material, the separated linear elastic model with loading bar and wheel in different material, the nonlinear model considering with the affection of contact relations and pretightening force. According to analysis and confrontation, and verification test oriented with the typical wheel, theirs advantages and shortages,stress range and computing reliability were studied; the veracity of models was verified with the test of a typical wheel. The research shows the nonlinear load model is corrected, the linear elastic model can be used to analyze the fatigue of wheel which is easy to be broken near bolt hole,and the same-different material of loading bar and wheel is less influential on the most equivalent stress, and the nonlinear contact model, considering with the affection of contact relations and pretightening force, was applicable to the analysis of the wheel which is easy to be broken near bolt hole.关键词
铝合金轮毂/弯曲疲劳试验/有限元模型/螺栓预紧/接触分析Key words
aluminum-alloy wheel/ bending fatigue test/ finite element model/ bolt pre-tightening load/ contact analysis分类
机械制造引用本文复制引用
陈继刚,张国智,林宇飞..铝合金轮毂弯曲疲劳试验的有限元模型[J].工程设计学报,2011,18(2):120-123,129,5.基金项目
河北省高等学校科学研究计划(2010284). （2010284）
