Simulation And Imitation On The Damage Of RC Bending Members Diagonal-section

The rapid development of simulation technology provides a powerful tool for further researches on RC structures. On the basis of the simulation and imitation on the damage of RC bending members cross-section, the paper stimulated the whole damage process of RC bending members diagonal-section by a finite element software ANSYS.The paper starts from the researches on diagonal-section theory and analyzes the factors that have impact on diagonal-section carrying capacity, which offers valuable reference for future simulation researches. It pays more attention to studying some basic problems that must be solved before simulation, such as combined model of steel and concrete, constitutive relation and failure criterion of the material, cracking imitation of concrete, the choice of the material element and so on. Through comparison and analysis, SOLID65 and LINK8 were chosen to be concrete and steel element, which adopts separate modeling. The concrete materials adopt Multilinear Kinematic Hardening relationship as well as William-Warnke damage norms and simulate concrete crack by means of separate cracks.This paper used a specific example to do many explorations from modeling, meshing, loading to solving by means of ANSYS to simulate and analyze. Finally, It implemented the damage process and also displayed the results by pictures, animations and curves.In order to judge whether the simulation is right or not, the author experiments on several small beams whose diameters are same as the simulated ones. Through comparing on destruction shape, the value of limited load and vertical displacement, the finite element analysis results have a fairly good agreement with experiment ones and the finite element model is proved rational. The behavior of the RC structure under load is also well shown which enables a deep research on the mechanics as well as the effects of relative parameters. Above all, the simulation analysis plays a tremendous role in reducing the experiment work, improving teaching method and further researching on structure and so on.