Journal of Shanghai Jiaotong University

• Metallography and Metallurgical Technology • Previous Articles     Next Articles

Instability Analysis and Experimental Study of Micro Stamping Process with Thin Sheet

HU Peng,PENG Linfa,LAI Xinmin,ZHANG Weigang
  

  1. (State Key Laboratory of Mechanical System and Vibration,
    Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2010-03-30 Revised:1900-01-01 Online:2011-01-27 Published:2011-01-27

Abstract: Focusing on the size effect which appears during the process of micro scale stamping, a new fracture criterion was derived from the constitutive equation based on strain gradient. Then, the stamping process of thin sheet was studied to obtain the relationship between the forming depth and strain. As a result, the limit of forming depth could be predicted accurately. Finally, a series of micro stamping experiments were conducted, which shows that the new fracture criterion is available.

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