The traditional Lagrangian and Eulerian formulations in finite elements posses some inherent difficulties when used in simulation of metal-forming processes or general finite strain problems. A more general method of formulation, the Arbitrary Lagrangian-Eulerian (ALE), is developed to overcome such
A finite-element simulation of non-steady-state metal forming processes
β Scribed by F. Diko; M.S.J. Hashmi
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 356 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0924-0136
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β¦ Synopsis
A two-dimensional finite element code has been developed by the authors to perform the simulation of non-steady-state forming processes. The code is based on a rigid/plastic simulation and allows the analysis of the forming of complex parts and gives the distribution of the principal field variables. Contact problems that emerge from large deformation are solved and an efficient re-meshing scheme is included. The code is used to simulate an axisymmetric closed-die forging.
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A new approach to process optimal design in non-isothermal, steady-state metal forming is presented. In this approach, the optimal design problem is formulated on the basis of the integrated thermo-mechanical ΓΏnite element process model so as to cover a wide class of the objective functions and to a
A computational method based on the membrane theory for the analysis of axisymmetric sheet metal forming processes such as punch stretching, deep drawing and hydroforming is presented. The elastic-plastic finite element approach is based on the flow rule associated with Hill's quadratic yield criter
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