Abstract
This work proposes a mathematical model for analysis of damage in multi-layered composite structures in different service conditions. The growth of damage in the form of delamination and matrix crack has been predicted. This study includes propagation of damage in square plate and spherical shell with existing matrix crack under application of static uniformly distributed load. Virtual crack closure technique and extended layerwise method are incorporated for this simulation. The extended layerwise method is used for simulation of damage like delamination and matrix crack in multi-layered composite structures while Virtual crack closure technique is used for determination of strain energy release rates in different service conditions. An algorithm is also proposed for propagation of arbitrary and changing shape type damages.
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