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Finite Element Formulations for Problems of Finite Deformation of Elasto-Viscoplastic Beams

Simo, Juan C.; Hjelmstad, Keith D.; Taylor, Robert L.

UCB/SESM-1983/01, Dept. of Civil Engineering, University of California, Berkeley, 1983-01, 35 pages (500/C23/83/01)

The finite deformation, elasto-viscoplastic response of beams is considered from a numerical point of view. Formulations in terms of stress resultants presented previously by Simo are discussed and extended to include viscoplastic material response by introducing rate equations for the evolution of the finite inelastic deformations. Special attention is given to the objectivity of the rates and to the form of the plastic flow potential.

Available online: http://nisee.berkeley.edu/documents/SEMM/SEMM-83-01.pdf (2 MB)