The present paper addresses the issue of direct simulation of complex local failure patterns in laminated composites including matrix cracking, delamination, and fiber failure. The analytical technique uses the Regularized eXtended Finite Element Method (Rx-FEM) for the simulation of matrix crack initiation and propagation at initially unknown locations; cohesive interface model for delamination and continuum damage mechanics model for fiber failure. An important feature of the technique is that it uses independently measured standard ply-level mechanical properties of the unidirectional composite (stiffness, strength, fracture toughness). Failure simulations of composites containing open holes are presented. Mesh and parameter sensitivity of the strength values is investigated.
|Title of host publication||Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference|
|Publication status||Published - 1 Dec 2012|
|Event||53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Honolulu, HI, United States|
Duration: 23 Apr 2012 → 26 Apr 2012
|Conference||53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference|
|Period||23/04/12 → 26/04/12|