Fig. 41From: On the construction of approximation space to model discontinuities and cracks with linear and quadratic extended finite elementsConvergence rates on the relative error in terms of the energy for the volumic load problem. The enrichment strategies are: linear shape functions and linear enrichment function (linear, linear), quadratic shape functions and a linear enrichment function (quadratic, linear) and quadratic shape functions and a quadratic enrichment function (quadratic, quadratic)Back to article page