In the past decade, continuum damage mechanics has been established to close the gap between the classical continuum and Fracture Mechanics. This approach offers the possibility to simulate the mechanical behaviour of solids made of history-dependent material, irreversibly degenerating under mechanical loads. The damage process is characterised by the development, growth and coalescence of microdefects leading to the formation and propagation of microcracks and eventually to rupture. In the present contribution a nonlocal integral type formulation for elasto-damaged materials is presented. The Boundary Element Method (BEM) is applied in order to obtain numerical results. The proposed numerical strategy avoids the appearance of stress oscillation patterns which arise in Finite Element (FE) computations for certain types of mesh.
A B.E. non local approach in continuum damage mechanics
ALESSANDRI, Claudio;MALLARDO, Vincenzo;TRALLI, Antonio Michele
2000
Abstract
In the past decade, continuum damage mechanics has been established to close the gap between the classical continuum and Fracture Mechanics. This approach offers the possibility to simulate the mechanical behaviour of solids made of history-dependent material, irreversibly degenerating under mechanical loads. The damage process is characterised by the development, growth and coalescence of microdefects leading to the formation and propagation of microcracks and eventually to rupture. In the present contribution a nonlocal integral type formulation for elasto-damaged materials is presented. The Boundary Element Method (BEM) is applied in order to obtain numerical results. The proposed numerical strategy avoids the appearance of stress oscillation patterns which arise in Finite Element (FE) computations for certain types of mesh.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
