Study on Welding Spot Layout for a Car B-Pillar Based on the Welding Spot Fatigue Life

Author:

Cui An1,Wang Zhi Yong1,Chen Yong1,Zhang Shi Zhan1ORCID

Affiliation:

1. Jilin University

Abstract

Based on the structural characteristics of a car B-pillar, the scheme of equal spacing layout on the welding spot partitions is adopted as the initial welding spots layout. The same constraints and loads are conducted on the models with different welding spot spacing. The highest strain values are calculated and analyzed around the welding spot areas. The fatigue life of the welding spot is calculated via the all-strain-life prediction model. The changing rule of the welding spot fatigue life under different spot spacing is obtained by the method of curve fitting. The optimal layout of the welding spots for the B-pillar is gotten finally. The layout is verified feasibility by comparing with that of the original model.

Publisher

Trans Tech Publications, Ltd.

Reference5 articles.

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2. A.H. Ertas, Fazıl O. Sonmez, Design optimization of spot-welded plates for maximum fatigue life [J]. Finite Elements in Analysis and Design, 2011, 47: 413–423.

3. Zhutao,GaoFeng,LIuGuoliang,Pre-Estimation of Fatigue Lifetime of Welding Spots of BIWs[J],1000-3703(2006)02-0037-03:37-40.

4. Jie Xu,Gang Lei,Spot Weld Layout Optimization and Simulation Analysis of Automobile Door [J]. Journal of Chongqing Institute of Technology(natural science),2009,11:25-38.

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