A study of characteristic element length for higher-order finite elements

Abstract. The utilization of a fracture energy regularization technique, based on the crack band model, can effectively resolve issue mesh-size dependency in finite element modelling quasi-brittle structures. However, achieving accurate results requires proper estimation characteristic length method. This study presents practical calculation methods for length, particularly higher-order elements Carrera Unified Formulation (CUF). Additionally, modified Mazars damage model that incorporates is employed analysis materials. An experimental benchmark adopted then validation, and result shows proposed ensure provide mesh-independent structural behaviors.