On singularities of solution of the elasticity system in a bounded
domain with angular corner points
Abstract
This paper aims to give a mathematically rigorous description of the
corner singularities of the weak solutions for the plane linearized
elasticity system in a bounded planar domain with angular corner points
on the boundary. The qualitative properties of the solution including
its regularity depend crucially on these corner points or such types of
boundary conditions. In particular, the resulting expansion of the
solutions of the underlying problem involves singular vector functions,
inlines, depending on a certain parameter ξμ. We derive
the transcendental equations for all ten possible cases of combinations
of the boundary conditions generated by the basic four ones in classical
elasticity proposing in the two natural directions of the boundary,
i.e., tangential and normal direction, respectively, which depends on ξμ
. So, a MATLAB program is developed whereby ξμ can be computed, and
figures showing their distributions are presented. The leading singular
exponents are computed for these combinations of the boundary
conditions, wherein critical angles ω_ critical are listed such that
for interior angles ω