The paper presents a mechanical model for buckling-driven delamination growth in composite laminates. The laminate, subjected to an in-plane compressive load, is modelled as the union of two sublaminates bonded together by an elastic interface, the last being a continuous distribution of linear elastic springs acting both normally and tangentially to its plane. Hence, the normal and tangential interlaminar stresses, exerted between the sublaminates, can be deduced, and the explicit expressions for the mode-I and II contributions to the energy release rate and, consequently, the mode-mixity angle derived. A first comparison with experimental data available in the literature seems to confirm the model’s effectiveness.
A mechanical model for mixed-mode buckling-driven delamination growth
BENNATI, STEFANO;VALVO, PAOLO SEBASTIANO
2001-01-01
Abstract
The paper presents a mechanical model for buckling-driven delamination growth in composite laminates. The laminate, subjected to an in-plane compressive load, is modelled as the union of two sublaminates bonded together by an elastic interface, the last being a continuous distribution of linear elastic springs acting both normally and tangentially to its plane. Hence, the normal and tangential interlaminar stresses, exerted between the sublaminates, can be deduced, and the explicit expressions for the mode-I and II contributions to the energy release rate and, consequently, the mode-mixity angle derived. A first comparison with experimental data available in the literature seems to confirm the model’s effectiveness.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
