DISSIPATION-BASED CONSISTENT RATE-DEPENDENT MODEL FOR CONCRETE |
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| Authors: | Fei Leng Gao Lin |
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| Institution: | [1]Earthquake Engineering Research Division, Dalian University of Technology, Dalian 116085, China [2]College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | An energy-dissipation based viscoplastic consistency model is presented to describe the| performance of concrete under dynamic loading. The development of plasticity is started with the thermodynamic hypotheses in order that the model may have a sound theoretical background. Independent hardening and softening and the rate dependence of concrete are described separately for tension and compression. A modified implicit backward Euler integration scheme is adopted for the numerical computation. Static and dynamic behavior of the material is illustrated with certain numerical examples at material point level and structural level, and compared with existing experimental data. Results validate the effectiveness of the model. |
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| Keywords: | constitutive model viscoplasticity consistency model energy dissipation rate dependency concrete backward Euler scheme |
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