FORMING LIMIT ANALYSIS OF ALUMINUM TAILOR-WELDED BLANKS

机译：铝合金尾缝毛坯的成形极限分析

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This paper presents an investigation on forming limits of tailor-welded blanks (TWBs) made of 5754-O aluminum sheets using both experimental and numerical approaches. A TWB is composed of two or more welded flat metal sheet of different thicknesses, shapes or mechanical properties. Due to the existence of weldment and the individual configurations of parent blanks, a TWB should be considered as heterogeneous in its structure. The mechanical properties of those parent metals and weld metal required for the simulation were measured individually. With the aid of the acquired data, finite element simulations for analyzing the forming process of TWBs were carried out using a general purpose finite element package, LS-DYNA. A localized necking criterion based on the vertex theory is employed to predict forming limit strains and failure locations of the aluminum TWBs. The theoretical predictions were satisfactorily validated with those obtained from the experiments.

机译：本文通过实验和数值方法，对由5754-O铝板制成的拼焊板（TWB）的成形极限进行了研究。 TWB由两个或更多个厚度，形状或机械性能不同的焊接平金属板组成。由于焊件的存在和母坯的单独配置，TWB在结构上应被视为异质的。分别测量了模拟所需的那些母体金属和焊缝金属的机械性能。借助所获取的数据，使用通用有限元程序包LS-DYNA进行了有限元仿真，以分析TWB的形成过程。基于顶点理论的局部颈缩准则用于预测铝制TWB的成形极限应变和破坏位置。理论预测已从实验中获得了令人满意的验证。

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来源
《AMD-vol.256; American Society of Mechanical Engineers(ASME) International Mechanical Engineering Congress and Exposition; 20051105-11; Orlando,FL(US)》|2005年|P.61-67|共7页
会议地点 OrlandoFL(US)
作者
M. JIE; C. L. CHOW; C. H. CHENG; L. C. CHAN;
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作者单位

Department of Mechanical Engineering, University of Michigan-Dearborn, 4901, Evergreen Road, Dearborn, Michigan, USA;

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原文格式 PDF
正文语种 eng
中图分类机械零件及传动装置;
关键词
tailor-welded blanks; forming limits; localized necking criterion;

机译：拼焊板;成形极限;局部缩颈标准;

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2. Forming-Limit Diagrams of Aluminum Tailor-Welded Blank Weld Material [J] . R.W. DAVIES, G.J. GRANT, H. EDDIE OLIVER Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science . 2001,第2期

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3. Experimental and Theoretical Analysis on Formability of Aluminum Tailor-Welded Blanks [J] . M. Jie, C. H. Cheng, L. C. Chan Journal of engineering materials and technology . 2007,第1期

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机译：铝拼焊板成形性的实验和理论分析

FORMING LIMIT ANALYSIS OF ALUMINUM TAILOR-WELDED BLANKS

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