...H. Tschöpe; P. Wriggers; E. Oñate The subject of this paper is the computation of instability points in mechanical problems with the finite element method. The objective is to extend the application of critical point detection methods to problems with inequality constraints originating from damage...

...J.P. Bardet Investigates the effects of two‐phase instability on finite element (FE) solutions for porous hypoelastic solids saturated with an insterstitial fluid. Demonstrates that two‐phase instability creates definite problems to the FE computations of coupled solid‐fluid systems...

... for rather small large domain in the stress space where the sufficient condition of stability is not fulfilled. The existence of such a large domain of potentially unstable behaviour has naturally major consequences at two levels. From a practical point of view it implies possible failures by instability...