Investigation on the dynamic failure characteristics of concrete slab based on mesoscopic simulation and energy conversion analysis
文献类型：期刊论文
| 作者 | Zhang, Qunlei4; Feng, Chun2,3 ; Wang, Decai4; Wu, Zongyuan4; Yang, Lan4; Yue, Jinchao1; Feng C(冯春)
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| 刊名 | CASE STUDIES IN CONSTRUCTION MATERIALS
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| 出版日期 | 2024-12-01 |
| 卷号 | 21页码:16 |
| 关键词 | Concrete slab Dynamic failure CDEM Mesoscopic simulation Energy conversion |
| ISSN号 | 2214-5095 |
| DOI | 10.1016/j.cscm.2024.e03661 |
| 通讯作者 | Feng, Chun(fengchun@imech.ac.cn) ; Wang, Decai(wangdecai@ncwu.edu.cn) |
| 英文摘要 | In this study, Continuous Discontinuous Element Method (CDEM) was employed to analyze the failure of concrete slab under drop-hammer impact at the mesoscopic level. Initially, simulation models of the impact system were established, and concrete slab models, including threedimensional random aggregates, were generated. Mesoscopic simulations of concrete failure were then conducted by considering different variables, such as impact energy, slab size and the number of hammerheads. Corresponding drop hammer tests were used to validate the simulation results. Furthermore, an energy conversion formula for the dynamic failure of concrete slabs was derived, and the energy conversion process within the impact system was analyzed. The study also revealed the dynamic failure mechanisms of concrete slabs under various impact conditions. The research demonstrates that the simulation results are generally consistent with the impact tests. CDEM effectively investigates the impact characteristic and the energy conversion process of concrete slab failure. Under varying impact energies, slab sizes and hammerhead numbers, distinct differences in the failure characteristics of concrete-slab structure were observed. Increased impact energy accelerates the failure of concrete slabs, whereas larger concrete slab sizes inhibit crack propagation. The number of impact heads determines the initial crack position and its propagation path within the concrete slab. Moreover, the energy conversion process of the impact system significantly influences the failure behavior of the concrete slab. The effect of slab size on the energy utilization rate is greater than those of hammerhead number and impact speed. |
| WOS关键词 | IMPACT BEHAVIOR ; BEAMS |
| 资助项目 | National Key Research and Development Project of China[2023YFC3007203] ; Key Research and Development Project of Henan Province[242102240029] ; Key Research Project of institutions of Higher Ed-ucation in Henan Province[24A580001] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001301581300001 |
| 资助机构 | National Key Research and Development Project of China ; Key Research and Development Project of Henan Province ; Key Research Project of institutions of Higher Ed-ucation in Henan Province |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96451]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 通讯作者 | Feng, Chun; Wang, Decai |
| 作者单位 | 1.Zhengzhou Univ, Sch Water Conservancy Engn, Zhengzhou 450001, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 4.North China Univ Water Resources & Elect Power, Sch Civil Engn & Commun, Zhengzhou 450045, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Qunlei,Feng, Chun,Wang, Decai,et al. Investigation on the dynamic failure characteristics of concrete slab based on mesoscopic simulation and energy conversion analysis[J]. CASE STUDIES IN CONSTRUCTION MATERIALS,2024,21:16. |
| APA | Zhang, Qunlei.,Feng, Chun.,Wang, Decai.,Wu, Zongyuan.,Yang, Lan.,...&冯春.(2024).Investigation on the dynamic failure characteristics of concrete slab based on mesoscopic simulation and energy conversion analysis.CASE STUDIES IN CONSTRUCTION MATERIALS,21,16. |
| MLA | Zhang, Qunlei,et al."Investigation on the dynamic failure characteristics of concrete slab based on mesoscopic simulation and energy conversion analysis".CASE STUDIES IN CONSTRUCTION MATERIALS 21(2024):16. |
入库方式： OAI收割
来源：力学研究所
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