Application of new VBHF optimization strategy to improve formability of automobile panels with aluminum alloy sheet

• Published in: Transactions of Nonferrous Metals Society of China Vol. 20; no. 3; pp. 471 - 477
• Main Author: 王武荣 陈关龙 林忠钦
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.03.2010; Shanghai Key Laboratory of Digital Autobody Engineering, School of Mechanical Engineering,Shanghai Jiao Tong Un; School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China%School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China
• Subjects: aluminum alloy sheet; Aluminum base alloys; Automotive components; Automotive engineering; deep drawing; Formability; Optimization; Panels; Strategy; variable blank holder force; Weight reduction; 优化策略; 变压边力; 成形性能; 模拟计算; 汽车板; 空间变量; 铝合金板材; variable blank holder force; aluminum alloy sheet; formability; deep drawing
• ISSN: 1003-6326
• DOI: 10.1016/S1003-6326(09)60164-3

A VBHF（Variable Blank Holder Force） optimization strategy was employed to determine the optimal time-variable and spatial-variable BHF trajectories,aiming at improving the formability of automobile panels with aluminum alloy sheet.The strategy was implemented based on adaptive simulation to calculate the critical wrinkling BHF for each segmented binder of the Numisheet＇ 05 deck lid in a single round of simulation.The thickness comparison of the stamped part under optimal VBHF and constant BHF shows that the variance of the four sections is decreased by 70%,44%,64% and 61%,respectively,which indicates significant improvement in thickness distribution and variation control.The investigation through strain path comparison reveals the fundamental reason of formability improvement.The study proves the applicability of the new VBHF optimization strategy to complex parts with aluminum alloy sheet.