کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
830655 | 1470358 | 2012 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Numerical simulation of impact tests on reinforced concrete beams Numerical simulation of impact tests on reinforced concrete beams](/preview/png/830655.png)
This paper focuses on numerical simulation of impact tests of reinforced concrete (RC) beams by the LS-DYNA finite element (FE) code. In the FE model, the elasto-plastic damage cap (EPDC) model, which is based on continuum damage mechanics in combination with plasticity theory, is used for concrete, and the reinforcement is assumed to be elasto-plastic. The numerical results compares well with the experimental values reported in the literature, in terms of impact force history, mid-span deflection history and crack patterns of RC beams. By comparing the numerical and experimental results, several important behavior of concrete material is investigated, which includes: damage variable to describe the strain softening section of stress–strain curve; the cap surface to describe the plastic volume change; the shape of the meridian and deviatoric plane to describe the yield surface as well as two methods of incorporating rebar into concrete mesh. This study gives a good example of using EPDC model and can be utilized for the development new constitutive models for concrete in future.
► Predictions using advanced concrete model compare well with the impact test results.
► Several important behavior of concrete is discussed.
► Two mesh ways incorporating rebar into concrete mesh is also discussed.
► Gives a example of using EPDC model and references to develop new constitutive models.
Journal: Materials & Design - Volume 39, August 2012, Pages 111–120