Finite element analysis of RC frame nodes based on ABAQUS

In this paper,by applying the concrete damage plasticity model,the non-linear finite element analysis of the performance of reinforced concrete(RC) frame nodes is conducted based on the finite element analysis software ABAQUS.Separate modeling is made by using solid elements for concrete modeling and truss elements for steel modeling,and the coupling of degree of freedom is also made based on Embed technology.The comparison between test results and finite element analysis shows that under vertical monotonic loading,the load-displacement curve of the free end of beam column agrees well with the test results,and the analytical deformation modes are consistent with the failure modes of specimen.By the parametric analysis,the impact of concrete expansion angle,viscosity coefficient and damage factor on the analytical results is investigated,providing an experimental and theoretical basis for node design in the actual project.