Three viscoplastic approaches are examined in this paper. First, the overstress viscoplastic models (i.e. the Perzyna model and the Duvaut-Lions model) are outlined. Next, a consistency viscoplastic approach is presented. In the consistency model a rate-dependent yield surface is employed while the
Rate equations for viscoplastic materials subjected to finite strains
โ Scribed by George Z. Voyiadjis; Louay N. Mohammad
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 687 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0749-6419
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
A model of multiplicative ยฎnite strain viscoplasticity is developed. Hereby the elastic internal potential is assumed to depend quadratically on the elastic strain measure C e by means of corresponding invariants. Hence, possible extension of the model to take anisotropy into account is straightforw
This work extends a previously developed methodology for computational plasticity at รฟnite strains that is based on the exponential map and logarithmic stretches to the context of isotropic elasto-viscoplastic solids. A particular form of the strain-energy function, given in terms of its principal v