Research on the calculation of model parameters for concrete plastic damage model in ABAQUS
The use of the concrete damaged plasticity(CDP)model in ABAQUS is relatively complex,which involves more input parameters and their relevant calibration process as well as its validation.Also,the reliability of numerical simulation results directly relies on the accuracy of the model parameters.Therefore,to improve the efficiency and reliability of numerical simulation results,an efficient CDP model parameter solver was developed based on the MATLAB code.The developed solver that incorporates the concept of fracture energy can automatically adjust to the need of model parameters with varying strengths of concrete(fcu)and different mesh sizes(leq)in finite element modelling.Its feasibility was then validated through two sets of benchmark simulations,including the uniaxial tension modelling with diverse mesh sizes as well as the uniaxial cyclic modelling both for tension and compression.The developed solver was further applied to simulate the reinforced concrete(RC)components under both monotonic and cyclic loading conditions,and the obtained results were in good agreement with test results thereby affirming the accuracy of the CDP model parameter solver.The research can provide strong support for the numerical simulation of engineering structures.
damaged plasticity modelCDP model parameter solverfracture energyRC componentnumerical simulationsABAQUS
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