Finite element analysis of diffuse instability using an implicitly integrated pressure–density dependent elastoplastic model

Finite element analysis of diffuse instability using an implicitly integrated pressure–density dependent elastoplastic model: "Publication year: 2010
Source: Finite Elements in Analysis and Design, In Press, Corrected Proof, Available online 6 February 2010
Mauricio, Pinheiro , Richard G., Wan
A very important characteristic of geomaterials is that they display a rich variety of failure modes arising from the instability of otherwise uniform states. This so-called material instability results from the interaction of particles with their neighbours at the microscale and has its origins in the strong dependence of material behaviour on stress, density and plastic strain softening. Thus, the proper understanding of material behaviour is essential to the formulation of realistic constitutive models and to the capturing of various failure patterns and instabilities in geomaterials. The main objective of this paper is to study diffuse instability in geomaterials using..."