摘要
针对液压缸动态特征参数一般呈现隐式和非线性的特点,基于蒙特卡罗法开展可靠性和可靠性灵敏度分析研究。首先,考虑到非线性弹簧力和时变摩擦力的作用机理,建立液压缸动力学模型;之后,根据微分方程理论进行求解,分析不同润滑条件下活塞速度在时域的变化情况;最后,依据蒙特卡罗法基本思想,利用结构失效概率和可靠性灵敏度分析方法,对液压缸低速时的运动可靠性及影响参数灵敏度进行分析。
In view of the implicit and nonlinear characteristics of the dynamic characteristic parameters of the hydraulic cylinder,the reliability and reliability sensitivity analysis is carried out based on the Monte Carlo method.First,considering the action mechanism of nonlinear spring force and time-varying friction force,the dynamic model of hydraulic cylinder is established;then,the differential equation theory is used to solve the problem,and the change of piston speed in time domain under different lubrication conditions is analyzed;finally,according to the basic idea of Monte Carlo method,the structural failure probability and reliability sensitivity analysis method are derived,which can be used to analyze the low speed of hydraulic cylinder The reliability of motion and the sensitivity of influencing parameters are analyzed.
作者
陈鹏霏
于泰龙
和鹏
贺宇新
CHEN Peng-fei;YU Tai-long;HE Peng;HE Yu-xin(School of Mechanical Engineering,Changchun University of Technology,Changchun,Jilin130012,China;Electrical and Mechanical School,Changchun Polytechnic,Changchun,Jilin 130033,China)
出处
《井冈山大学学报（自然科学版）》
2020年第3期60-63,共4页
Journal of Jinggangshan University (Natural Science)
基金
吉林省教育厅项目(JJKH20191300KJ)。
关键词
液压缸动态特征
蒙特卡罗法
隐式非线性结构
可靠性灵敏度分析
dynamic characteristics of hydraulic cylinder
Monte Carlo method
implicit nonlinear structure
reliability sensitivity analysis
