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| Stress and deformation response in reinforced concrete beam under static and dynamic loads based on meshless method |
| LIN Hang1,2, XIONG Wei1, HUANG Liang3, LIU Qunyi4 |
1. School of Resources and Safety Engineering, Central South University, Changsha 410083, China;
2. Key Laboratory of Highway Construction & Maintenance Technology in Loess Region, Shanxi Transportation Research Institute, Taiyuan 030006, China;
3. School of Civil Engineering & Architecture, Xiamen University of Technology, Xiamen 361024, China;
4. School of Geosciences and Info-Physics, Central South University, Changsha 410083, China |
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Abstract: The nonlinear large deformation has always been a difficulty in the numerical analysis of reinforced concrete beams, and the mesh distortion will greatly reduce solution accuracy in the finite element method (FEM), while grid points in the meshless method are not constrained by the grids, so this method can well handle the nonlinear large deformation problem in reinforced concrete beams. To solve the problem of nonlinear large deformation accurately, we establish a numerical model of reinforced concrete beam on the basis of the meshless method, and the static and dynamic loads are applied on the model to analyze the stress, deformation and failure mode of the reinforced concrete beam. The results show that either under the static or dynamic loads, the maximum stress varies with the change of load, and the stress and deformation of the reinforced concrete beam are consistent with the actual law, demonstrating the meshless method can be used for the nonlinear large deformation problem.
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Received: 18 March 2015
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2016, Vol. 34 
