Effect of the plastic hinge and boundary conditions on the impact behavior of reinforced concrete beams
This study numerically investigates the effect of the plastic hinge and boundary conditions on the behavior of reinforced concrete (RC) beams under slow-impact-velocity events. Numerical models are developed by using LS-Dyna and verified against experimental results. The effect of different factors...
| Main Authors: | , |
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| Format: | Journal Article |
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Elsevier
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/38414 |
| _version_ | 1848755314415894528 |
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| author | Pham, Thong Hao, H. |
| author_facet | Pham, Thong Hao, H. |
| author_sort | Pham, Thong |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This study numerically investigates the effect of the plastic hinge and boundary conditions on the behavior of reinforced concrete (RC) beams under slow-impact-velocity events. Numerical models are developed by using LS-Dyna and verified against experimental results. The effect of different factors including the impact velocity, projectile weight, and concrete strength on the impact behavior of RC beams is examined. The numerical results have shown that the effect of boundary condition is marginal on the impact force but significant on the displacement and damage of relatively long beams. Determining the structural stiffness of a beam in an equivalent single degree of freedom model for predicting the impact load should consider the plastic hinge formation and stationary location. And this model is not necessarily suitable for predicting the peak beam response since it is independent of the boundary conditions when the impact velocity is fast. The negative bending moment of the simply-supported beam occurs with a large magnitude which needs to be taken into account in the design. The residual displacement is more sensitive to the boundary conditions than the peak displacement. Varying concrete strength from 20 MPa to 100 MPa does not noticeably change the impact force and displacement but significantly affects the failure mode of the beam. |
| first_indexed | 2025-11-14T08:54:20Z |
| format | Journal Article |
| id | curtin-20.500.11937-38414 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:54:20Z |
| publishDate | 2017 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-384142018-12-14T01:05:00Z Effect of the plastic hinge and boundary conditions on the impact behavior of reinforced concrete beams Pham, Thong Hao, H. This study numerically investigates the effect of the plastic hinge and boundary conditions on the behavior of reinforced concrete (RC) beams under slow-impact-velocity events. Numerical models are developed by using LS-Dyna and verified against experimental results. The effect of different factors including the impact velocity, projectile weight, and concrete strength on the impact behavior of RC beams is examined. The numerical results have shown that the effect of boundary condition is marginal on the impact force but significant on the displacement and damage of relatively long beams. Determining the structural stiffness of a beam in an equivalent single degree of freedom model for predicting the impact load should consider the plastic hinge formation and stationary location. And this model is not necessarily suitable for predicting the peak beam response since it is independent of the boundary conditions when the impact velocity is fast. The negative bending moment of the simply-supported beam occurs with a large magnitude which needs to be taken into account in the design. The residual displacement is more sensitive to the boundary conditions than the peak displacement. Varying concrete strength from 20 MPa to 100 MPa does not noticeably change the impact force and displacement but significantly affects the failure mode of the beam. 2017 Journal Article http://hdl.handle.net/20.500.11937/38414 10.1016/j.ijimpeng.2016.12.005 Elsevier fulltext |
| spellingShingle | Pham, Thong Hao, H. Effect of the plastic hinge and boundary conditions on the impact behavior of reinforced concrete beams |
| title | Effect of the plastic hinge and boundary conditions on the impact behavior of reinforced concrete beams |
| title_full | Effect of the plastic hinge and boundary conditions on the impact behavior of reinforced concrete beams |
| title_fullStr | Effect of the plastic hinge and boundary conditions on the impact behavior of reinforced concrete beams |
| title_full_unstemmed | Effect of the plastic hinge and boundary conditions on the impact behavior of reinforced concrete beams |
| title_short | Effect of the plastic hinge and boundary conditions on the impact behavior of reinforced concrete beams |
| title_sort | effect of the plastic hinge and boundary conditions on the impact behavior of reinforced concrete beams |
| url | http://hdl.handle.net/20.500.11937/38414 |