基于蒙特卡洛分析的油气弹簧可靠性试验研究

Experimental Study on the Hydro-pneumatic Spring Reliability Based on the Monte Carlo Method

该文在介绍某典型油气弹簧产品结构和工作原理的基础上,根据产品在底盘研制及使用中的重要性,提炼出影响油气弹簧可靠性的三个关键特性,每个关键特性设置了3个水平,运用田口直交试验设计法进行因素水平的验证,得到最优响应预测。再结合蒙特卡洛法进行因素水平预测和容差分析,灵敏度分析等,对油气弹簧可靠性试验进行研究^([1])。按蒙特卡洛分析结果试制的100根产品,质量稳定,可靠性高,产品合格率达到了100%。该研究可用于对产品关键特性的风险控制及管理分析。

Three key features of the hydro-pneumatic spring have been proposed in this paper according to its structure,working principle and the essence in both the development and use of the motor-vehicle classis.Each feature was analyzed with three different levels using the Taguchi orthogonal experiment and the corresponding optimal response was obtained.In order to study the reliability of the hydro-pneumaticspring,Monte Carlo method was utilized to predict the level of the key features,conduct tolerance analysis and sensitive analysis.100sample hydro-pneumatic springs which were produced based on Monte Carlo method possessed stable quality and high reliability,making the qualification rate100%.This research is useful for the risk control and management of the key features of the products.