中文摘要：

为了进行曲柄滑块机构动态强度可靠性分析，在以构件截面尺寸、材料强度、密度、重力加速度等为随机变量，以基本杆组为单位进行运动分析、动力分析的基础上建立了曲柄滑块机构动态强度可靠性分析方法。用蒙特卡罗法和一次二阶矩法进行了实例仿真分析，得到了各构件动态强度可靠性指标曲线和曲柄滑块动态强度可靠度曲线。结果表明，该方法计算速度快、计算精度高。

英文摘要：

In order to analyze dynamic strength reliability of mechanism, taking the component section sizes, mate- rial strength and density and gravity acceleration as the random variables, and based on the movement analysis and the dynamic analysis taking the Assur-Group as unit, the analysis method of dynamic strength reliability for the crank-slide mechanism was established. The example was analyzed by using the Monte Carlo （MC） method and the MFOSM （Mean First Order Second Moment） method. The reliability curves about the dynamic strength were at- tained. The result indicates that the velocity of the pesent method is high, and the precision is high too.