A nonlinear high-order FEM for analysis of RC wall structures with material model of smeared rotating cracks
In the understanding of reinforced concrete (RC) structural behavior,finite element analysis plays a very important role,particularly in regard to the evaluation of critical regions and failure modes,ultimate strengths,and load-deformation behaviors. This work presents a study of behavior of RC wall structures subjected simultaneously to axial and lateral loads.A nonlinear high-order finite element procedure is used for the analysis of RC structures. Cracked reinforced concrete is treated as an orthotropic material on basis of a smeared,rotating crack model. The geometrical nonlinearity is taken into account by Greens strain formulation. In order to obtain the ultimate loading capacity of the structures,an iterative incremental displacement procedure is achieved by incorporating the element formulation into Newton-Raphson method.Two numerical examples are provided to illustrate the simplicity of the calculation procedure and the good convergence characteristics and numerical stability of the formulations. Finally,the structural behavior of RC wall is also discussed by the comparison between the experimental results and numerical result of the analysis procedure.
RC wall structures Nonlinear high-order FEM Highly nonlinear behavior Smeared rotating crack model Geometrical and material nonlinearity
Songbai Cai Pusheng Shen
College of Resource and Environment Science,Hunan Normal University,Changsha 410081,China College of Civil Engineering,Hunan University,Changsha 410082,China
国际会议
Fracture Mechanics and Applications 2008(国际断裂力学2008年年会)(FM2008)
杭州
英文
179-184
2008-10-31（万方平台首次上网日期，不代表论文的发表时间）