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| Received:February 06, 2015 Revised:June 20, 2015 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201603007 |
| KeyWord:Mesoscale Rigid Body Spring Model (RBSM) wedge splitting three-point bending notched beam fracture energy volume content of aggregate |
| Author | Institution |
| 王思莹 |
大连理工大学 海岸和近海工程国家重点实验室, 大连 |
| 王立成 |
大连理工大学 海岸和近海工程国家重点实验室, 大连 |
| 王文斌 |
中建三局 第一建筑工程有限责任公司 深圳分公司, 深圳 |
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| Abstract: |
| Based on the discrete element method and Voronoi diagram technology,in this paper,the mesoscale Rigid Body Spring Model (RBSM) for simulating the fracture process of concrete was used to conduct the numerical analysis of the fracture process of concrete wedge splitting specimens and three-point bending notched concrete beams.The obtained results were then compared with available experimental results in terms of the process of crack propagation,the failure patterns of specimens,load-CMOD behaviour and fracture energy.It is shown that the mesoscale RBSM can be accurately applied to simulate the fracture process of concrete wedge splitting specimens and three-point bending notched concrete beams.The effects of different ratio of a/D and aggregate volume contents on the fracture process of concrete were also investigated and it is found that the fracture energy of specimens becomes higher with the increasing of the aggregate volume contents. |
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