Finite-Element Formulation for the Analysis of Plastic Deformation of Rate-Sensitive Materials in Metal Forming.
Abstract
The finite-element formulation for the analysis of metalworking problems for rigid-viscoplastic materials, including the effect of temperature, has been established. Of particular significance is an accomplishment of the coupled analysis of deformation and heat transfer. The formulations were applied to the problems of solid cylinder compression and ring compression. Then, the forming processes of shell nosing at room temperature, as well as at elevated temperatures, were analyzed. The results demonstrate that it is now possible to analyze accurately not only cold forming processes, but also processes in warm and hot forming regimes, by the finite-element method, including the effects of strain, strain-rate, and temperature on material properties. Most recent achievement is an introduction of a new approach to the problem of preform design in shell nosing as a unique application of the finite-element method. The concept involved in the approach is to trace backward the loading path from a given final configuration. The method was applied to preform design in shell nosing. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 29, 1982
- Accession Number
- ADA121791
Entities
People
- Shiro Kobayashi
Organizations
- University of California, Berkeley