Fig. 5From: Trefftz polygonal finite element for linear elasticity: convergence, accuracy, and propertiesBending of thick cantilever beam: convergence results for a the relative error in the displacement norm \((L^2)\) and b the relative error in the energy norm. The rate of convergence is also shown, where m is the average slope. In case of the polygonal SBFEM, p denotes the order of the shape functions along each edge of the polygonBack to article page