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Technical Briefs

Design and Quick Formability Analysis of Autopanel at Preliminary Design Stage

[+] Author and Article Information
Zhang Zhibing

State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, Chinaallen@fastamp.com

Liu Yuqi

State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, Chinaliuyq@fastamp.com

Du Ting

State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, Chinadooting@fastamp.com

J. Manuf. Sci. Eng 132(2), 024501 (Mar 26, 2010) (5 pages) doi:10.1115/1.4001036 History: Received April 06, 2009; Revised January 08, 2010; Published March 26, 2010; Online March 26, 2010

An updated inverse approach with discrete Kirchhoff quadrilateral (DKQ) element is proposed to consider actual process conditions such as friction, blank-holder force, pad force, and drawbead restraining force, which improves the calculation accuracy and extends the application scopes of the inverse approach. Based on the updated approach, a trimming line design and flanging analysis method are proposed. These methods can be used in autopanel virtual manufacturing, rapid design, and manufacturing as quick simulation and optimization tools. Some practical examples are presented to verify the accuracy and the efficiency of the methods.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figures

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Figure 1

Updated inverse approach model

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Figure 2

Procedure of two steps unfolding: (a) first unfolding and (b) second unfolding

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Figure 3

Comparison of L box between experiment and analysis: (a) contour of initial blank and (b) thickness strain distribution

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Figure 4

Thickness strain distribution in two sections: (a) section A and (b) section B

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Figure 5

Formability of autofloor part: (a) analysis result and (b) experimental data

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Figure 6

Fender model: (a) part geometry and (b) process model

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Figure 7

Trimming line analysis at zone A: (a) trimming line analysis model and (b) comparison with experimental data

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Figure 8

Trimming line and flanging analysis at zone B: (a) trimming line calculated and (b) flanging analysis

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Figure 9

Flanging analysis at zone A: (a) flanging analysis data and (b) experimental data

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