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An upper bound approach for analysis of hydroforming of sheet metals

Assempour, A ; Sharif University of Technology | 2004

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  1. Type of Document: Article
  2. Publisher: Materials and Energy Research Center , 2004
  3. Abstract:
  4. Considering a kinematical velocity admissible field, the upper bound method has been used for predicting the amount of pressure in hydroforming of sheet metals. The effects of work hardening, friction and blank size have been considered in pressure prediction. Also the effect of sheet thickness variation has been considered in the present work formulations. The relation between pressure and punch stroke has been obtained and optimized by changing the selective parameters in the velocity components. The results for cylindrical and hemispheric parts have been obtained and compared with the published experimental results. The effects of work hardening, friction and blank size on hydroforming pressure have been examined on an elliptical part. Good agreement was found between the experimental and numerical results
  5. Keywords:
  6. 3D strain ; Hydroforming ; Sheet metals ; Thickness variation ; Upper bound ; Work hardening
  7. Source: International Journal of Engineering, Transactions B: Applications ; Volume 17, Issue 4 , 2004 , Pages 389-398 ; 1728-144X (ISSN)
  8. URL: https://www.ije.ir/article_71555.html