Numerical strategies for variational updates in large strain inelasticity with incompressibility constraint

In finite deformation inelasticity, one often has to deal with the incompressibility constraint. past, this was dealt using, for example, an exponential mapping approach, which yields exact volume preservation in plastic deformations. article however, special-linear update approach by Hurtado et al. The update: An application of differential manifold theory isochoric plasticity flow rules, Int J Numer Methods Eng. 2014;97(4):298-312, utilizes a projection method fulfill constraint is used. model applied isotropic novel approximation logarithm and treats kinematic hardening without losing symmetry internal variables. results are compared models utilizing numerical experiments.