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Title:Mechanism and control method on falling deformation for sheet metal stamping parts
Authors: Shen Hongqing Tong Yaping  
Unit: Planning Department SAIC Volkswagen Automotive Co.  Ltd. 
KeyWords: stamping parts  falling deformation  gravity  springback  finite element simulation 
ClassificationCode:TG385
year,vol(issue):pagenumber:2019,44(10):45-49
Abstract:

 

 
The falling deformation of stamping parts can lead to dimension deviation and surface defects. Therefore, the falling deformation experiment of a fender part was carried out, and the direction, value and stability of falling deformation were analyzed. Based on the experiment, the falling process was simulated by FE, and the mechanism and control method of falling deformation were analyzed. The research results show that during the dynamic falling process, the stress concentration occurs in the areas where the geometrical features change sharply, which leads to local tiny plasticity deformation. After local plasticity deformation, the elastic recovery process is important, and the dimension problems and surface defects appear during the recovery process. In order to decrease the influence of falling deformation, the control methods can be taken, such as reducing the falling height, adjusting the falling posture and optimizing the stamping geometry.
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AuthorIntro:
作者简介:沈洪庆(1982-),男,博士,工程师 E-mail:shenhongqing@csvw.com
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