Abstract
Closed form and finite element solutions are reviewed for several problems with strain-softening materials. In the closed form solutions, strain-softening causes localization of the strain which is accompanied by an instantaneous vanishing of the stress. The finite element solutions agree closely with analytic solutions in many cases and exhibit a rate of convergence only slightly below that for linear problems. The main difficulty which has been identified in strain-softening constitutive models for damage is the absence of energy dissipation in the strain-softening domain, and this can be corrected by a nonlocal formulation, such as one which is reviewed here.
Original language | English (US) |
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Pages | 253-272 |
Number of pages | 20 |
State | Published - 1984 |
Funding
Ack,ro,c,/rd.~fnrnrs-Weg ratefullya cknowledget he support of Air Force AFOSR Grant 83-0009lo Northwestern University.
ASJC Scopus subject areas
- General Engineering