正交试验设计在工程车辆驾驶室悬置系统优化上的应用

The Application of Orthogonal Test in the System of the Suspension System of the Cab of the Engineering Vehicle

国内外研究者在探讨悬置系统参数对解耦率影响时,一般都是采用"其它固定,单个变动"的方法,即固定其它结构参数,单独讨论一种结构参数变动时的影响,这种方法应用起来简单,结果明显,但不能直接应用于工程实践的指导,针对于此,采用正交优化设计的方法对驾驶室主要激振力方向RZ和RXX解耦率影响最大的轴向刚度、径向刚度、X向距离和Y向距离综合起来考虑,寻找到了使两个方向解耦率最大的最优结构参数组合,分别给出了影响参数主次顺序,这为驾驶室悬置系统优化提供了较直接的理论支持。

Researchers at home and abroad usually adopt the method of"the other fixed,a single change"in the study of the effects of suspension system parameters on the decoupling rate,other structure parameters are fixed namely,and the influence of only one structural parameter change is discussed separately.The method is simple in application and obvious,However,it is not directly applied to the guidance of engineering practice.The method of orthogonal design is adopted to comprehensively consider the axial stiffness,the radial stiffness,the X-direction distance and the Y-direction distance to the influence of the decoupling rate of main exciting force direction of the cab,the optimal structural parameter combinations with the maximum decoupling ratio of two directions are found,and the primary and secondary order of the influencing factors are respectively given,which provides a more direct theoretical support for the system optimization of the cab.