ABSTRACT
The key contribution is validation of Functionally graded material (FGM) models and a computational framework for studying the impact response of FGM plates as a foundation for investigations of more severe impact loads. The first model used analytical expressions based on the local volume fractions of the constituents to generate homogenized-material properties for the mixtures of titanium and titanium boride. A titanium–titanium–boride metal–ceramic composite system was chosen for a series of plate impact experiments. The test results were compared with finite element simulations using two-phased and homogenized-layer material models to emulate the material properties of the Ti–TiB monolithic and graded plates. The fixture was specifically designed to configure the plate specimens to behave as close to a plate with a circular boundary condition as possible. The specimen plates are placed in the fixture such that the strain gauges lie on the surface opposite the impact surface.
