Etude analytique numérique et expérimentale du contact mécanique poinçon sur plan

Abstract

Photoelastic analysis of stresses developed in a birefringent plan which undergoes compression via an aluminium punch was conducted. The stress field was analysed on the whole model and particularly in the neighbourhood of the contact zone. The principal stresses difference was easily determined by using the isochromatic fringes obtained experimentally. A numerical simulation was done by using “castem package”. A whole field comparison of the experimental fringes with the numerical ones and a local analysis using the principal stresses difference developed in the model, along the direction of the applied load, allowed us to validate the theoretical and the numerical approach. Good agreements have been observed