STABILITY OF FGM ARCHES UNDER AN ARBITRARY RADIAL CONCENTRATED LOAD

Abstract

It is well-known that the mechanical behaviour of shallow arches is strongly nonlinear. Geometrically linear models overestimate the critical (buckling) load and are unable to describe the post-buckling behaviour. In recent years, numerous new findings were published in this topic. We hereby intend to contribute by presenting and evaluating a new mechanical model for the case when pinned-pinned arches, made of functionally graded material, are subject to an arbitrary concentrated radial dead load.