Time-dependent reliability analysis for function generation mechanisms with random joint clearances

被引：110

作者：

Zhang, Junfu ^{[1
]}

Du, Xiaoping ^{[2
]}

机构：

[1] Xihua Univ, Sch Mech Engn, Chengdu 610039, Sichuan, Peoples R China

[2] Missouri Univ Sci & Technol, Dept Mech & Aerosp Engn, Rolla, MO 65409 USA

来源：

MECHANISM AND MACHINE THEORY | 2015年 / 92卷

基金：

中国国家自然科学基金;

关键词：

Time-dependent reliability; Function generator; Joint clearance; SLIDER-CRANK MECHANISM; SENSITIVITY-ANALYSIS; UNCERTAINTY ANALYSIS; REVOLUTE JOINTS; ERROR; LINKAGE; PLANAR; MANIPULATORS; OPTIMIZATION; SIMULATION;

D O I：

10.1016/j.mechmachtheory.2015.04.020

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Time-dependent reliability method for mechanisms predicts the probability of satisfying the motion requirement in a predefined period of time. The current reliability methods do not consider the random clearances in mechanism joints. This work extends the current methods into function generation mechanisms on which the effect of random joint clearances is significant. The motion output is approximated in the first order with respect to random dimension variables and in a higher order with respect to random joint clearances by the Hybrid Dimension Reduction Method. This treatment achieves an optimal balance between accuracy and efficiency. Then an envelope method is used to calculate the time-dependent reliability. The method is demonstrated by the analysis of three four-bar function generation mechanisms. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：184 / 199

页数：16

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