Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)
- 2001.10a
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- Pages.89-92
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- 2001
Superplastic Forming Process Analysis for Aluminium Body Forming
알루미늄 차체성형을 위한 초소성 성형공정해석
Abstract
A rigid-viscoplastic finite element code for superplastic forming processes has been developed The material is assumed to be isotropic and a modified Coulomb friction law is adopted to explain contact between tool and sheet. This code uses the triangular element based on the membrane approximation and a hierarchical contact searching method is implemented The optimum pressure-time relationships for target strain rate are calculated by several pressure control algorithms. By the analysis, optimum pressure-time curves and deformation behavior are predicted.
Keywords
- Superplastic Forming;
- Rigid-Viscoplastic FEM;
- Pressure-Time Curve;
- Hierarchical Contract Searching Method