A new phenomenological anisotropic tensile failure criterion and its application in FDEM simulations
文献类型：期刊论文
| 作者 | Liu, Ping; Liu, Quansheng; Deng, Penghai; Huang, Xing; Xie, Xianqi |
| 刊名 | ENGINEERING FRACTURE MECHANICS
 |
| 出版日期 | 2023-09-01 |
| 卷号 | 289 |
| ISSN号 | 0013-7944 |
| 关键词 | Direct tensile test Anisotropic tensile failure criterion Combined finite-discrete element method (FDEM) Loading rate Layer thickness |
| 英文摘要 | The tensile strength is a key parameter for the design of many geotechnical engineerings such as tunnel support, slope support, and petroleum drilling. The tensile strength in layered rocks, however, is anisotropic due to the existence of bedding planes. In this paper, to study the anisotropic tensile behaviors, a series of direct tensile tests were conducted using Kangding slate with five different foliation angles (& beta; = 0 degrees, 30 degrees, 45 degrees, 60 degrees, and 90 degrees). Based on the N-Z criterion, a new tensile failure criterion with the anisotropic coefficient was proposed. The tensile strength data of nine typical layered rocks were collected to evaluate the prediction ability of seven anisotropic tensile failure criteria including the new criterion. Embedding the new criterion into FDEM, the loading rate-dependent and layer thickness-dependent tensile mechanism of layered rock under direct tensile test were simulated. The experimental and numerical simulation results showed that the foliation angle significantly affected the tensile strength and failure modes of the slate. With the increase of foliation angle (& beta;), the tensile strength of nine typical layered rocks, including Kangding slate, presented a non-linear increase trend. Compared with the other six typical anisotropic tensile failure criteria, the new criterion has the best prediction capability on the tensile strength of rocks with four different anisotropic degrees, and therefore the new criterion was recommended. The new criterion was embedded in FDEM to carry out direct tensile simulation of slate with different & beta;. The numerical simulation results were in good agreement with the experimental results, further verifying the accuracy of the new criterion. The loading rate sensitivity analysis indicated that a tensile rate of 0.01 m/s was recommended to assure quasi-static loading of the specimen. Through the sensitivity analysis of layer thickness, it is concluded that layer thickness has very little influence on tensile strength, but has a very significant influence on the final failure modes of the specimens. |
| 学科主题 | Mechanics |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:001022242200001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34843]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Wuhan University; Wuhan University; 2.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS |
| 推荐引用方式 GB/T 7714 | Liu, Ping,Liu, Quansheng,Deng, Penghai,et al. A new phenomenological anisotropic tensile failure criterion and its application in FDEM simulations[J]. ENGINEERING FRACTURE MECHANICS,2023,289. |
| APA | Liu, Ping,Liu, Quansheng,Deng, Penghai,Huang, Xing,&Xie, Xianqi.(2023).A new phenomenological anisotropic tensile failure criterion and its application in FDEM simulations.ENGINEERING FRACTURE MECHANICS,289. |
| MLA | Liu, Ping,et al."A new phenomenological anisotropic tensile failure criterion and its application in FDEM simulations".ENGINEERING FRACTURE MECHANICS 289(2023). |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。