Sandwich panels analysis under compressive load using finite elements methods

Bachelor thesis deals with possibilities of numerical modeling failure mechanism in sandwich panels using final element methods. The first part of the thesis presents theoretical introduction to requirements of sandwich structures and either mathematic formulation of constitutive relations. The purpose of the thesis was to set suitable approcahes of formulation instability problems with applying on laboratory samples. The analysis was done using nonlinear solvers in programes Patran/Nastran and the results have been properly evaluated with experimental work and analytical approach