工程机械柔性机械臂振动的混合可靠性分析

中国机械工程

工程机械柔性机械臂振动的混合可靠性分析

曾光1,2;姜潮1;倪冰雨1

1.湖南大学汽车车身先进设计制造国家重点实验室，长沙,410082
2.中联重科股份有限公司,长沙,410013

出版日期:2017-06-25 发布日期:2017-06-22
基金资助:
国家自然科学基金资助项目（11172096，51222502）

Hybrid Reliability Analysis for Flexible Manipulator Vibrations in Engineering Machinery

ZENG Guang1, 2;JIANG Chao1;NI Bingyu1

1.State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University, Changsha,410082
2.Zoomlion Heavy Industry Science and Technology Co.， Ltd., Changsha,410013

Online:2017-06-25 Published:2017-06-22

摘要/Abstract

摘要： 基于概率-区间混合不确定性模型及结构可靠性分析方法，针对工程机械多关节柔性机械臂的振动可靠性进行研究。根据机械臂不确定参数的信息完备程度，通过概率变量和区间变量对不确定参数进行度量。基于柔性臂架有限元仿真数据，构建机械臂参数与结构固有频率关系的径向基函数代理模型，进而通过概率-区间混合可靠性分析方法对机械臂共振的失效概率进行区间估计。最后将该方法应用于实际产品，通过工程实例验证了方法的有效性。

关键词: 柔性机械臂, 振动分析, 概率-区间混合模型, 径向基代理模型

Abstract: Based on the probabilistic and interval hybrid model and structural reliability analysis method, vibration reliability analyses for engineering mechanical systems with multi-joint flexible manipulators was investigated. According to different types of the uncertain parameters in mechanical manipulators, the uncertainties were quantified by random and interval variables. With simulation data of finite element model, a RBF agent model was built for structural natural frequencies with regard to mechanical manipulator’s parameters. And the failure probability of the mechanical manipulators due to resonance was evaluated based on the probabilistic and interval hybrid reliability analysis method. Finally the above analysis method was applied for a practical project example to make an illustration.

Key words: flexible manipulator, vibration analysis, probabilistic and interval hybrid model, radial basis function(RBF) agent model

中图分类号:

TB114.3

曾光, 姜潮, 倪冰雨. 工程机械柔性机械臂振动的混合可靠性分析[J]. 中国机械工程.

ZENG Guang, , JIANG Chao, NI Bingyu. Hybrid Reliability Analysis for Flexible Manipulator Vibrations in Engineering Machinery[J]. China Mechanical Engineering.

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