GEM develops powerful toolkits to address complex engineering issues.
Global Engineering and Materials, Inc. (GEM) is developing a comprehensive suite of customized toolkits for Abaqus to perform fracture and fatigue simulation of metallic and composite structures. A composite bolted and bonded analysis toolkit for Abaqus (CB2ATA) toolkit and a three-dimensional extended finite element analysis toolkit for Abaqus (XFA3D) are developed for the damage initiation and failure progression analysis of composite and metallic structures, respectively. To capture the discrete crack induced stress concentration on the delamination initiation and propagation, a discrete crack network (DCN) module is developed and included in CB2ATA to provide a high fidelity damage prediction of a critical region. To evaluate the interaction of the discrete crack in the metallic layer and the delamination at the interface of the composite and metallic layer, a hybrid structure evaluation and fatigue damage assessment (HYSEFDA) is developed for fiber metal laminates under cyclic loading. The XFA3D toolkit is created for simulation of mesh-independent 3D fatigue crack growth based on the extended finite element method (XFEM) and Abaqus/Standard solver. In order to capture ductile fracture in a large thin-walled metallic structure under dynamic loading, a mesh independent XFEM shell toolkit (XSHELL) is developed for the explicit Abaqus solver to predict the dynamic crack path, the load-deflection curve, and the failure sequence.