Abstract
Most recent developments on the finite element method as applied to metal forming problems emphasize the application to three dimensional problems. There are some areas in metal forming where technological advancements can be made by full utilization of capabilities of the finite element method. An example is the development on the use of the finite element method for preform design. In this paper these developments are described.
Based in the rigid-viscoplastic forulation three-dimensional finite-element analysis was performed for the vlock forgings, using an 8-node hexahedral isoparametric element. The analysis of forging of a wedge-shaped block between two flat parallel dies is presented.
The objective of the analysis of spread problems, such as spread in rolling, in flat tool forging and spread in compression of noncircular efficiency, a simplified 8-node hexahedral element was devised and applied to the analysis of spread in rolling and in flat tool forging.
A development in the area of sheet metal forming is the analysis of forming of non-symmetric shapes. Based on the membrane theory, the formulation takes into account the finite strain, normal anisotropy, and the isotropic work hardening characteristics. New solution is shown for punch stretching of a rectangular strip.
One of the significant industrial problems in metal forming is the design of preforms. A new approach to this problem has been introduced. The concept involved in the approach is to trace backward the loading path in the actual forming process from a given final configuration by the finite element method. The application of the method to preform design in shell nosing is discussed.
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© 1985 Plenum Press, New York
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Kobayashi, S. (1985). Recent Developments on the Application of the Finite Element Method to Metal Forming Problems. In: Bruggeman, G., Weiss, V. (eds) Innovations in Materials Processing. Sagamore Army Materials Research Conference Proceedings, vol 30. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2411-9_10
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DOI: https://doi.org/10.1007/978-1-4613-2411-9_10
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