GOALI: Experimental and Theoretical Study of Springback in Arbitrarily Shaped Aluminium Panels

9503956 Triantafyllidis提出的研究是一个综合的实验和建模工作，提供了一个一致的，时间效率高的通用配方设计对回弹，由于外部负载去除和修剪，冲压铝板与任意几何形状。 在这项工作中的基本思想是有效地利用膜溶液的片材在冲压阶段结束，以预测其最终的弹性松弛形状。 初步的实验/分析的可行性研究，使用所提出的想法已经完成了轴对称冲压件。 在本研究中，计划将轴对称研究的结果推广到任意几何形状的冲压件。 一个通用的渐近建模技术，提出了制定问题和一套汽车生产模具也计划。 建模工作的结果将被纳入通用有限元代码，该代码将用于通用汽车和ALCOA的设计目的，作为GOALI倡议下的产学合作项目的一部分。 ***

9503956 Triantafyllidis The proposed study is a combined experimental and modeling effort to provide a consistent, time-efficient general purpose formulation for the design against springback, due to external load removal and trimming, of stamped aluminum panels with arbitrary geometries. The basic idea in this work is the efficient use of the membrane solution of the sheet at the end of the punching phase in order to predict its final elastically relaxed shape. An initial experimental/analytical feasibility study which used the proposed idea has been completed for axisymmetric stampings. In the present investigation the plan is to generalize the results of the axisymmetric study to stampings with arbitrary geometry. A general asymptotic modeling technique is proposed to formulate the problem in question and a set of automotive production dies is also planned. The results of the modeling work will be incorporated into a general purpose FEM code which will be used for design purposes by GM and ALCOA as part of an Industry-University Collaborative Project under the GOALI Initiative. ***