Abstract
An effective numerical approach is proposed for structural damage analysis, especially for structures which may be damaged at multiple locations to different extents. The structural damage state is represented by defining a set of field-variable functions, and the degradation of material properties is described. Then, through customization of the commercial finite element software ABAQUS/Standard, the damage state is directly assigned to the integration points of elements, thereby avoiding modification of the finite element model. Afterwards, the damaged structures by ABAQUS/Standard is conducted numerically. Finally, this approach is verified by simulating the growth of delamination for a pre-delaminated composite plate and a composite plate under impact loading, respectively.
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