Following some recent results, the Authors mean to present some analyses concerning the strain localisation in damage analysis by the Boundary Element Method (BEM) and the possibility to shift from the continuous damage analysis to the crack analysis. A non local approach of integral type is applied in the context of a damage model. A criterion is introduced in order to insert a crack in the damaged zone. Such macro-crack can be analysed by the Dual Buoundary Element Method (DBEM). The BEM/DBEM seems to be very suitable for such application. In consequence of the localisation, the damaged zone results to be small in comparison with the total size of the structure, i.e. the domain discretisation is limited. Furthermore, due to the special features of the DBEM, the introduction of the crack requires a minimum addition of unknowns.
From damage to crack: a B.E. approach
MALLARDO, Vincenzo;ALESSANDRI, Claudio
2006
Abstract
Following some recent results, the Authors mean to present some analyses concerning the strain localisation in damage analysis by the Boundary Element Method (BEM) and the possibility to shift from the continuous damage analysis to the crack analysis. A non local approach of integral type is applied in the context of a damage model. A criterion is introduced in order to insert a crack in the damaged zone. Such macro-crack can be analysed by the Dual Buoundary Element Method (DBEM). The BEM/DBEM seems to be very suitable for such application. In consequence of the localisation, the damaged zone results to be small in comparison with the total size of the structure, i.e. the domain discretisation is limited. Furthermore, due to the special features of the DBEM, the introduction of the crack requires a minimum addition of unknowns.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
