Kinematic accuracy analysis of flexible mechanisms with uncertain link lengths and joint clearances

被引：41
|
作者：
Yan, S. [1 ]
Guo, P. [1 ]
机构：
[1] Tsinghua Univ, Dept Precis Instruments & Mechanol, State Key Lab Tribol, Beijing 100084, Peoples R China
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE | 2011年 / 225卷 / C8期
基金：
美国国家科学基金会;
关键词：
kinematic accuracy; flexible mechanism; joint clearance; dynamics; stochastic parameter; DYNAMIC-ANALYSIS; SENSITIVITY-ANALYSIS; MULTIBODY SYSTEMS; BEHAVIOR;
D O I：
10.1177/0954406211401499
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A general method of kinematic accuracy analysis is presented for the flexible planar mechanisms with stochastic parameters such as uncertain link lengths and joint clearances. The impact-pair model is employed to describe the separation and impact phenomena between the two components in the clearance joint. The dynamic equations of the flexible mechanism with stochastic parameters are established by finite element method and solved by the Newmark method. The Monte Carlo method is introduced to analyse the kinematic accuracy of the flexible mechanisms. A numerical example shows the effects of link flexibility and joint clearances on the kinematic accuracy of the planar mechanism with stochastic parameters using the proposed approach.
引用
收藏
页码：1973 / 1983
页数：11
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