This paper presents a one-dimensional model for a composite laminated plate containing a delamination and subjected to uniaxial compression. The delaminated plate is thought of as two sublaminates partly connected by an elastic interface. With the aim of modeling the behavior of the thin layer of resin joining the laminae together in a real laminate, this interface is considered to be a continuous distribution of normal and tangential elastic springs. The nonlinear equilibrium equations, derived from von Kármán's plate theory, are solved explicitly, and the normal and tangential interlaminar stresses are determined. The virtual crack closure technique is used to deduce the expressions for the mode-I and mode-II energy release rates, as these are needed in order to apply a mixed-mode crack-growth criterion.
An elastic-interface model for delamination buckling in laminated plates
BENNATI, STEFANO;VALVO, PAOLO SEBASTIANO
2002-01-01
Abstract
This paper presents a one-dimensional model for a composite laminated plate containing a delamination and subjected to uniaxial compression. The delaminated plate is thought of as two sublaminates partly connected by an elastic interface. With the aim of modeling the behavior of the thin layer of resin joining the laminae together in a real laminate, this interface is considered to be a continuous distribution of normal and tangential elastic springs. The nonlinear equilibrium equations, derived from von Kármán's plate theory, are solved explicitly, and the normal and tangential interlaminar stresses are determined. The virtual crack closure technique is used to deduce the expressions for the mode-I and mode-II energy release rates, as these are needed in order to apply a mixed-mode crack-growth criterion.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
