Code verification and calculation verification for non-linear finite element analysis of reinforced concrete beam

This paper presents a method for the code verification and calculation verification in the verification and validation for non-linear finite element analysis of reinforced concrete beam. The computational model verified in this study is a non-linear finite element analysis using the modified von-Mises damage model for concrete and the von-Mises plasticity model for steel. A reference solution obtained from the beam theory with material nonlinearity is used for the code verification. The mesh sensitivity is evaluated by using the analysis of variance in the calculation verification instead of estimating the mesh convergence rate. Three cases of the reinforced concrete beam are prepared for code and calculation verification, each of which is different in beam size and bar arrangement. The numerical results provide the possibility of the verification for non-linear finite element analysis of reinforced concrete. © 2022 by the Japan Society for Computational Engineering and Science.