车轮设计优化及双轴试验

车轮在不同路况下行驶时会同时受到来自各个方向的载荷,因传统的弯曲和径向疲劳试验结果,每次仅模拟车轮单一方面的承载情况,所以若不加以修正,很难代表车轮真实的服役情形。文章在介绍车轮装配的基础上,分析了车辆直线行驶和转弯2种状态下车轮的混合应力谱,并对能同时给车轮施以侧向和径向组合载荷的双轴试验原理、设备、过程及其结果评定作了详细论述。表明LBF开发的双轴疲劳试验机能用简单的程序模拟测试整个车轮的承载情形,来自实际工况的经验、数字评估与试验验证的整合构成了车轮的设计优化。

Design Optimization and Biaxial Test for Wheels

Wheels are loaded in a complex manner and are highly stressed in the course of their rolling duty.The traditional cornering and rotating fatigue tests,which only simulate the load from a single direction,cannot represent the actual service conditions if we do not correct them.The over-all stress spectrum for a wheel both at straight driving state and cornering state is analyzed based on its assembly in this paper.The principle,test facility,process and evaluation of result for the test of wheel biaxial loaded by vertical and lateral direction are discussed.The paper indicates that the biaxial wheel durability test machine developed by LBF which provides improved simulation of wheel loading conditions and makes it possible to test the total wheel in a single procedure.A method for optimal wheel design consists of spot experience,digital evaluation and testing validation.