This paper presents the modeling of UHPFRC I-beam with LCP. Based on the existing numeri- cal simulation of quasi-brittle fracture in normal concrete, a model is developed to simulate the fracture in UHPFRC I-beam. A triangular unit that is constructed…
This paper presents the modeling of UHPFRC I-beam with LCP. Based on the existing numeri- cal simulation of quasi-brittle fracture in normal concrete, a model is developed to simulate the fracture in UHPFRC I-beam. A triangular unit that is constructed from constant strain triangle, with nodes along its sides and not at the vertex or the center of the unit, is used to formulate the finite element. Fracture is simulated through a hardening-softening fracture constitutive law in tension, a softening fracture constitutive law in shear and a softening fracture constitutive law in compression at the boundary nodes, with the material within the triangular unit remaining linear elastic. LCP is used to formulate the path-dependent hardening/softening behavior in non-holonomic rate form and the PATH solver is employed to solve LCP. The simulation results are in agreement with the test results, which indicate the effectivity of this method.