Finite Element Modeling of Cracks in Functionally Graded Materials
Functionally Graded Materials (FGM) is a new kind of composites that allows spatial optimization of properties which are characterized by a significant variation in composition. These materials are developed with a gradual change in microstructure so they can reduce stress concentrations due to changes in geometry and temperatures. In high stress concentration areas there is a high possibility that a failure can occur (e.g. cracks) and propagate throughout the body. To investigate the impact of crack propagation in these materials, the Finite Element Method (FEM) will be used. During this work, materials will be evaluated with linear graded variation and exponential graded variation. Also the use of FRANC2D software will be used to determine the stress concentration areas in FGM and model crack propagation. The results obtained for FGM by the use of FEM and FRANC2D can be used to compare them with real mechanical test done to these materials.
School:
University of Puerto Rico at Mayagüez
Department:
Civil Engineering
Research Advisor:
Glaucio H. Paulino
Department of Research Advisor:
Civil and Environmental Engineering
Year of Publication:
2002