Pseudo-Elasticity

Professor R. Ogden
Department of Mathematics
University of Glasgow
 
Sponsored by the Department of Engineering Mechanics and a grant provided by Professor Emeritus C. Wayne Martin

Date:  Tuesday, August 24, 1999
Time:  3:30 p.m.
Place:  W128 Nebraska Hall


In this talk we describe a new theory of pseudo-elasticity aimed at providing models for a variety of quasi-static inelastic effects occurring in the finite deformation of polymeric materials.  One version of the theory is presented and used to model damage-induced stress softening effects for homogeneous deformations, such as simple tension, in rubberlike solids (in particular, the Mullins effect).  The theory is then applied to a problem in which the deformation is non-homogeneous and it is shown that residual strains may be left after removal of the boundary tractions if the latter exceed some critical value.