Application of the Finite Element Method to Metal-Forming Problems.
Abstract
Applicability of the finite element method in metal-forming process modeling has been expanded and the use of its capability for solving industrial problems has been demonstrated in the area of; (1) spread analysis in three-dimensional forming processes, (2) perform design and (3) calculation of residual stresses involved in metal forming. In the analysis of spread, sideway spread in block compression between two parallel flat plates was analyzed, using simplified three dimensional eight-node elements. The investigation has been extended to the development of general three-dimensional finite element technique and, the analysis of open-die forging was conducted for producing two size bars. A novel approach to preform design by tracing a loading path backward from a given final configuration was applied to precision preform design in plane-strain rolling. The technique was extended to include the temperature calculation in the scheme and applied to precision preform design in nosing at elevated temperatures. For the investigation of residual stresses, a comprehensive review on the subject has been made, and the finite element program was developed for the determination of residual stresses for radial forging. Keywords: Plastic deformation, Radial forging, Open-die forging, Preform design, Shell nosing.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 10, 1986
- Accession Number
- ADA175662
Entities
People
- Shiro Kobayashi
Organizations
- University of California, Berkeley