Title

板材塑性成形理論和技術在汽車工業中的應用及其發展趨勢

Translated Titles

General Trends of Technology and Plasticity Related Issues on Sheet Metal Forming Processes in Automotive Production

Authors

胡衛龍(Wei-Long Hu);王仲仁(Z. R. Wang)

Key Words

板材衝壓 ; 塑性力學 ; 屈服準則 ; 本構關係 ; 有限元分析 ; 壓邊 ; 輔助設計 ; sheet metal stamping ; plasticity ; yield criterion ; constitutive relations ; finite element analysis, binder-set ; addenda design

PublicationName

塑性工程學報

Volume or Term/Year and Month of Publication

9卷4期(2002 / 12 / 28)

Page #

7 - 14

Content Language

簡體中文

Chinese Abstract

依靠衝壓工藝成形的汽車外蒙皮件及框架結構件在汽車工業生產中扮演著一個重要的角色,並在很大程度上決定著一種新車型能否最終贏得市場。所以,對其相關的技術必須給予高度的重視。只有依託高水平的技術支持,才能獲得高質量的產品。涉及衝壓工藝生產的相關技術包括:板材塑性力學,衝壓工藝過程的有限元分析(FEA),具體的成形工藝設計等。其中,塑性力學,包含其最基本的屈服準則,本構關係,大變形過程中其各向異性板材方向特性的再定義,以及適合於不同衝壓工藝的成形極限圖(FLD)等。而對於有限元模擬,其關鍵的實用技術,是瞭解不同應用程序的使用特點及局限性,並找到相關的控制措施。涉及具體的成形工藝,則必須以可成形性及經濟性為準則進行相關的壓邊工序及輔助部分的設計,並對成形道次進行綜合分析,以獲得經濟、高效的成形工藝方案。

English Abstract

Panels and frames of vehicles produced by the stamping processes play a major role in the automotive production, in a certain degree, which will result in the marketing of a new vehicle model to be going successful or not. Thus, technologies related to this kind of work must be paid more attention. High quality of these parts obtained relies on the technological developments involving the basic plasticity, FEA simulation and processing technology, In the scope of basic plasticity, which deals with the yield criteria, constitutive relations of stress and strain, the reorientation behaviors caused during a large deformation on an anisotropic strain-hardening material, and the forming limit dependence on loading history. With related to the FEA simulation work, the main works are finding out the difference and limitation with respect to each program. Effective control methods regarding to the dynamic effect while using dynamic code, and improving constringency by using implicit code, are all the important research projects. For the processing related issues, higher quality and lower weight requirements on the vehicles push binder design and die development to be going up a big progress, in which how to attach a helpful addendum on the associated tooling and how to decide the forming type, should be also the worth study in sheet metal forming field.

Topic Category 工程學 > 工程學總論
工程學 > 機械工程