Numerical Simulation of Quasi-Brittle Fracture in UHPFRC I-Beam as a Linear Complementarity Problem
This paper presents a numerical simulation of quasi-brittle fracture in UHPFRC I-beam as a linear complementarity problem. Based on the investigation of Tin-Loi and Attard, the simulation of quasi-brittle fracture in concrete has been extended to model UHPFRC I-beam by including a tensile hardening. Fracture is simulated through a hardening-softening fracture constitutive law in tension and a softening fracture constitutive law in shear 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. The good matching of test results and numerical results indicates the effectivity of this method.
Daizhong Su, Qingbin Zhang and Shifan Zhu
S. M. Han et al., "Numerical Simulation of Quasi-Brittle Fracture in UHPFRC I-Beam as a Linear Complementarity Problem", Key Engineering Materials, Vols. 419-420, pp. 297-300, 2010