The stress singularity order in a composite wedge of functionally graded materials under antiplane deformation
In this paper, finding the order of singularity in multi-wedge systems containing elements made of functionally gradient material (FGM) with an angular gradient under antiplane deformation is studied. These elements are proposed to be modeled by means of multi-wedge composite, where the shear modulus changes from wedge to wedge according to a certain functional dependence (in this article we consider the linear, quadratic, and exponential dependencies). It is found that the model region composed of 20 elements provides a relative error in the calculation of the stress field singularity or