摘要
为了减少铝合金车轮性能检测的试验次数以提高车轮的设计研发效率,建立铝合金车轮13°冲击试验的数值模型进行仿真试验非常必要。在充分考虑冲击试验台静态与动态效果的基础上,建立包括冲头、车轮总成和试验台架的铝合金车轮冲击试验有限元模型,其中试验台架上的橡胶支座采用弹簧—阻尼单元进行模拟,且将轮胎安装所产生的车轮预应力作为初始条件,使用非线性有限元动力分析软件LS-DYNA对铝合金车轮冲击过程进行仿真分析。通过对车轮上若干测量点应变值的有限元仿真结果与试验结果的比较,确认与铝合金车轮实际台架试验相等效的计算机模拟试验平台的有效性。该计算机模拟试验平台的建立对铝合金车轮的前期设计开发具有重要的指导意义及应用价值。
It is very necessary to replace experimental test by a numerical model of wheel impact test in order to reduce experimental times and improve design efficiency. A finite element model of A-alloy wheel impact test is established based on fully consideration of static and dynamic behaviors of impact test stand. The whole model includes impact block, wheel ＆ tire assembly and test stand. The rubber supports are simulated by using spring-damper elements, and the prestressing of the wheel ＆ tire assembly is applied as the initial condition, the impact process is solved by the transient dynamic explicit finite element software LS -DYNA. The simulation model is verified by comparing the simulation results with experimental results of the strain on some measuring points. It is obvious that finite element models have a guiding significance and practical value for initial design and development of the A -alloy wheel.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2010年第2期83-87,共5页
Journal of Mechanical Engineering
基金
教育部留学回国人员科研启动基金资助项目
关键词
有限元法
铝合金车轮
计算机仿真
冲击试验
Finite element method Car A-alloy wheel Computer simulation Impact test
