Application of a microplane damage model for concrete to an isogeometric scaled boundary formulation for 3D solids

Microplane models have the advantage of describing damage-induced anisotropy, which is common in quasi-brittle materials such as concrete, a simple and straightforward way. Over past decades, various microplane been formulated to describe different loading cases phenomena concrete structures. They include pure damage plasticity based or combination these two approaches. In this work, first step, model, derived from principle energy equivalence, applied framework an isogeometric 3D solid boundary representation. Isogeometric analysis has that it can represent exactly complex geometries, influence correct description evolution. addition, use representation with NURBS B-splines accordance modeling technique CAD allows for application design model process. The described using bi-variate while interior approximated uni-variate B-splines. capture finely distributed cracking matrix represents strategy effectively support development thin-walled shell structures made textile-reinforced concrete. Several examples are studied order investigate ability correctly fracture kind non-standard discretization formulation. Furthermore, comparison standard finite element method conducted.