Response of circular GLARE fiber-metal laminates subjected to oblique indentation

This article deals with the static response of thin circular clamped GLAss REinforced fiber-metal laminates subjected to oblique indentation. The indentation response is initially predicted using ANSYS software and a three-dimensional nonlinear finite element analysis with geometric and material nonlinearities. From this analysis, the load-indentation and the strain energy-indentation curves are calculated. Postprocessing of the obtained Finite Element Method (FEM) results reveals how GLAss REinforced plates respond to oblique indentation. Then, analytical formulas are derived to predict the GLAss REinforced plate indentation load and strain energy as a function of the oblique indentor's displacement and the direction of indentation. The derived analytical formulas are applied successfully for circular GLAss REinforced plates with various diameters and indentation directions. The analytically predicted load-indentation and strain energy-indentation curves are compared with corresponding Finite Element Method (FEM) results and a very good agreement is found.