Energetic solutions for the coupling of associative plasticity with damage in geomaterials. (September 2022)

• Record Type: Journal Article
• Authors: Crismale, Vito
• Is Part Of: Nonlinear analysis. Volume 222(2022)
• Publication Date: 2022-09
• Subjects: 74C05 -- 74R05 -- 74G65 -- 35Q74 -- 49J45; Variational models -- Quasistatic evolution -- Energetic solutions -- Drucker–Prager elasto-plasticity -- Kinematical hardening -- Damage models -- Complete damage -- Brittle fracture; Mathematical analysis -- Periodicals; Functional analysis -- Periodicals; Nonlinear theories -- Periodicals; Analyse mathématique -- Périodiques; Analyse fonctionnelle -- Périodiques; Théories non linéaires -- Périodiques; Functional analysis; Mathematical analysis; Nonlinear theories; Periodicals; Electronic journals; 515.7248
• DOI: 10.1016/j.na.2022.112957
• Languages: English
• ISSNs: 0362-546X

Abstract

Abstract: We prove existence of globally stable quasistatic evolutions, referred to as energetic solutions, for a model proposed by Marigo and Kazymyrenko in 2019. The behaviour of geomaterials under compression is studied through the coupling of Drucker–Prager plasticity model with a damage term tuning kinematical hardening. This provides a new approach to the modelling of geomaterials, for which non associative plasticity is usually employed. The kinematical hardening is null where the damage is complete, so there the behaviour is perfectly plastic. We analyse the model combining tools from the theory of capacity and from the treatment of linearly elastic materials with cracks.