According to the Linear Elastic Fracture Mechanics criteria, a numerical model is developed to simulate the failure evolution of multi-cracked finite plates by means of an incremental loading procedure. A modified crack length control scheme is used in order to analyse such problems depending on one or more independent parameters. The aim is to provide information about a discontinuous response, such as the snap-back instability, which can be highlighted only by a deformation controlled process. The load vs. displacement curve, included possible snap-back branches, is numerically traced by means of a procedure based on the Displacement Discontinuity Boundary Element Method. With reference to finite plates with ordered crack distributions in plane strain loading conditions, the model is applied in order to analyse the effects of the crack interaction on the fracture evolution.
Snap-back analysis of fracture evolution in multi-cracked solids using boundary element method
MONETTO, ILARIA
1999-01-01
Abstract
According to the Linear Elastic Fracture Mechanics criteria, a numerical model is developed to simulate the failure evolution of multi-cracked finite plates by means of an incremental loading procedure. A modified crack length control scheme is used in order to analyse such problems depending on one or more independent parameters. The aim is to provide information about a discontinuous response, such as the snap-back instability, which can be highlighted only by a deformation controlled process. The load vs. displacement curve, included possible snap-back branches, is numerically traced by means of a procedure based on the Displacement Discontinuity Boundary Element Method. With reference to finite plates with ordered crack distributions in plane strain loading conditions, the model is applied in order to analyse the effects of the crack interaction on the fracture evolution.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
