Delamination propagation behavior simulation method of composite material multidirectional laminated plate on basis of cohesion model
A technology of composite materials and simulation methods, which is applied in the field of research and prediction of the delamination expansion behavior of composite multi-directional laminated boards. problems, to achieve the effect of reducing test costs and shortening the development cycle
Inactive Publication Date: 2014-02-26
BEIHANG UNIV
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The invention relates to a delamination propagation behavior simulation method of a composite material multidirectional laminated plate on the basis of a cohesion model. The method includes the following steps that (1) a geometric model is built according to structural parameters of a composite material multidirectional laminated plate test piece, (2) key parameters capable of reflecting interfacial behaviors are calculated, and material attributes are respectively set, (3) meshing is carried out on the geometric model of the composite material multidirectional laminated plate test piece, a module is assembled, and a three-dimensional finite element model is built, (4) a load and boundary conditions of the finite element model are determined according to practical situations and the load state of a composite material structure, (5) the finite element model based on the cohesion model is calculated and analyzed, a load displacement curve of a loading point is extracted, delamination propagation behaviors of the composite material multidirectional laminated plate are simulated to obtain the largest load value of the load displacement curve, and damage behaviors of the multidirectional laminated plate are predicted.
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