摘要
为了达到车轮轻量化的目的,同时满足疲劳寿命的要求,以某轿车规格255/45R20车轮为研究对象,对铝合金车轮疲劳寿命及路面行驶情况进行研究,得到一种采用交变载荷仿真车轮疲劳的方式。建立有限元模型并加载进行疲劳分析,得到车轮疲劳损伤结果;根据车轮的疲劳损伤位置,采用改变不同区域材料工艺、增减辐条倒角"R"大小及增减料厚的方式进行优化以实现车轮的减重。这种结合疲劳寿命的试验在工程上可以减少成本、节省试验周期、实现车轮轻量化、降低油耗,对车轮轻量化的研究具有指导意义和普遍性。
In order to achieve the purpose of wheel lightweight, and meet the needs of fatigue life, a 255/45R20 wheel was taken as the researching object. The fatigue life and driving condition of aluminum alloy wheels were researched, then a method to simulate fatigue life using alternating load was obtained. The finite element model was established and fatigue analysis was carried out to get the fatigue damage results of wheels. Based on the position of the fatigue damage of wheel, the method was optimized to realize the weight reduction of the wheel by changing the material technology in different areas, increasing and decreasing the size of the spoke chamfer “ R ”, and increasing and decreasing the material thickness. The sort of research combined with fatigue life test can reduce the cost of the wheel, save the test cycle, realize the light weight of the wheel and reduce the fuel consumption. It has guiding significance and universality for the research on wheel lightweight.
作者
郑风云
马媛媛
肖攀
于人杰
ZHENG Fengyun;MA Yuanyuan;XIAO Pan;YU Renjie(China Automotive Engineering Research Institute Co.,Ltd.,Chongqing 401122,China)
出处
《汽车零部件》
2019年第1期6-10,共5页
Automobile Parts
关键词
疲劳寿命
车轮轻量化
仿真试验
材料工艺
Fatigue life
Wheel light weight
Simulation test
Material technology
