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Modeling and analysis of compliant sheet metal assembly variation

Kuigang Yu (Auto‐Body Manufacturing Technology Center, Shanghai Jiaotong University, Shanghai, People's Republic of China)
Sun Jin (Auto‐Body Manufacturing Technology Center, Shanghai Jiaotong University, Shanghai, People's Republic of China)
Xinmin Lai (Auto‐Body Manufacturing Technology Center, Shanghai Jiaotong University, Shanghai, People's Republic of China)
Yanfeng Xing (Auto‐Body Manufacturing Technology Center, Shanghai Jiaotong University, Shanghai, People's Republic of China)

Assembly Automation

ISSN: 0144-5154

Article publication date: 1 August 2008

Abstract

Purpose

Material variation is inevitable in volume production, especially the sheet metal thickness variation, which influences part stiffness characteristic. The purpose of this paper is to present a new variation model of compliant sheet metal assembly with consideration of material variation influence.

Design/methodology/approach

The theory of computational solid mechanics is used to obtain the relationship between part stiffness matrix and material characteristic. The method of influence coefficients is adopted to deduce the assembly variation model.

Findings

Material variation‐induced influence coefficients to assembly variation are obtained, and a variation model of compliant sheet metal assembly with sources of material variations, part geometric variations and fixture variations is presented. Analysis shows that material variation has an important influence to assembly variations.

Originality/value

A quantitative relationship between assembly variations and material thickness variations is firstly given and a new variation model of compliant sheet metal assembly is presented to help designers to more exactly predict the assembly variation and diagnose variation sources.

Keywords

Citation

Yu, K., Jin, S., Lai, X. and Xing, Y. (2008), "Modeling and analysis of compliant sheet metal assembly variation", Assembly Automation, Vol. 28 No. 3, pp. 225-234. https://doi.org/10.1108/01445150810889484

Publisher

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Emerald Group Publishing Limited

Copyright © 2008, Emerald Group Publishing Limited