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In experimental studies, a size effect has been measured for the fracture energy in the transverse crack tension test. This paper presents a numerical investigation into the cause of this size effect. A finite element model has been developed that includes delamination, friction and shear nonlinearity. After calibration of the model, the size effect was reproduced well. It is shown that shear nonlinearity...
Different methods for computing energy release rates for delamination are assessed with emphasis on their performance with large elements and irregular meshes. The jump in stress and strain that appears at the crack front with shell kinematics is used to compute the energy release rate in a simple manner via the jump in Eshelby tensor, without the mesh requirements that are associated with the virtual...
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