基于基本杆组法的曲柄滑块机构动态强度可靠性分析

基金项目:

北京市自然科学基金项目(3102019)

国家自然科学基金项目(51275138)资助

The Reliability Analysis of Dynamical Strength for Slider-crank Mechanism Based on the Assur-group Method

1.
School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080;
2.
School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191;
3.
National Engineering Research Center for Equipment and Technology of C.S.R, Yanshan University, Qinhuangdao 066004

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。
- 机构 /
- 动态强度 /
- 可靠性 /
- 基本杆组法
Abstract: 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.
- mechanism /
- dynamical strength /
- reliability /
- assur-group method

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