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Acta Mechanica Sinica

, Volume 29, Issue 4, pp 557–566 | Cite as

A reliability study of springback on the sheet metal forming process under probabilistic variation of prestrain and blank holder force

  • Hatem MradEmail author
  • Mohamed Bouazara
  • Gholamreza Aryanpour
Research Paper

Abstract

This work deals with a reliability assessment of springback problem during the sheet metal forming process. The effects of operative parameters and material properties, blank holder force and plastic prestrain, on springback are investigated. A generic reliability approach was developed to control springback. Subsequently, the Monte Carlo simulation technique in conjunction with the Latin hypercube sampling method was adopted to study the probabilistic springback. Finite element method based on implicit/explicit algorithms was used to model the springback problem. The proposed constitutive law for sheet metal takes into account the adaptation of plastic parameters of the hardening law for each prestrain level considered. Rackwitz-Fiessler algorithm is used to find reliability properties from response surfaces of chosen springback geometrical parameters. The obtained results were analyzed using a multi-state limit reliability functions based on geometry compensations.

Keywords

Springback Prestrain Multi-state limit functio Constitutive law Monte Carl 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Hatem Mrad
    • 1
    Email author
  • Mohamed Bouazara
    • 1
  • Gholamreza Aryanpour
    • 2
  1. 1.Department of Applied SciencesUniversity of Quebec at ChicoutimiQuebecCanada
  2. 2.Laval UniversityQuébecCanada

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