Finite Element Analysis on Mixed-Mode Dynamic Fracture Experiments of Centrally Cracked Brazilian Disks With Crack Face Contact

LI Nianbin; DONG Shiming; HUA Wen

doi:10.21656/1000-0887.410349

Volume 42 Issue 7

Jul. 2021

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Article Navigation > Applied Mathematics and Mechanics > 2021 > 42(7): 704-712

LI Nianbin, DONG Shiming, HUA Wen. Finite Element Analysis on Mixed-Mode Dynamic Fracture Experiments of Centrally Cracked Brazilian Disks With Crack Face Contact[J]. Applied Mathematics and Mechanics, 2021, 42(7): 704-712. doi: 10.21656/1000-0887.410349

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Finite Element Analysis on Mixed-Mode Dynamic Fracture Experiments of Centrally Cracked Brazilian Disks With Crack Face Contact

doi: 10.21656/1000-0887.410349

1. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610213, P.R.China;
2. College of Architecture & Environment, Sichuan University, Chengdu 610065, P.R.China

Funds:

The National Natural Science Foundation of China(11872042)

Received Date: 2020-11-21
Rev Recd Date: 2021-04-15

Abstract

Abstract

To verify the feasibility of measuring brittle material’s complex-mode dynamic fracture toughness, the centrally cracked Brazilian disk (CCBD) specimen was tested under dynamic loads in the split Hopkinson pressure bar (SHPB) system in view of crack face contact. The 3D SHPB-CCBD finite element model was established to calculate dynamic stress intensity factors (DSIFs) of the CCBD specimen under different loading conditions. Results show that, the fracture time condition of stress equilibrium is necessary for calculating DSIFs through extension of the quasi-static stress intensity factor (SIF) formula with crack face contact to the dynamic expression. The crack face contact leads to changes of the crack face stress, and has a significant impact on the mode-II DSIFs. The test values of mode-II DSIFs will be unreasonably larger without regard to the crack face contact.
- crack face contact,
- split Hopkinson pressure bar,
- centrally cracked Brazilian disk,
- finite element method,
- dynamic stress intensity factor

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References(13)

References

XIA K, YAO W. Dynamic rock tests using split Hopkinson (Kolsky) bar system: a review[J]. Journal of Rock Mechanics and Geotechnical Engineering,2015,7(1): 27-59.

[2]胡时胜, 王礼立, 宋力, 等. Hopkinson压杆技术在中国的发展回顾[J]. 爆炸与冲击, 2014,34(6): 641-657.(HU Shisheng, WANG Lili, SONG Li, et al. The development review of Hopkinson pressure bar technology in China[J]. Explosion and shock,2014,34(6): 641-657.(in Chinese))

[3]王礼立. 应力波基础[M]. 北京: 国防工业出版社, 2005.(WANG Lili. Foundation of Stress Waves[M]. Beijing: National Defense Industry Press, 2005.(in Chinese))

[4]ZHOU Y X, XIA K, LI X B, et al. Suggested methods for determining the dynamic strength parameters and mode-Ⅰ fracture toughness of rock materials[J]. International Journal of Rock Mechanics and Mining Sciences,2012,49: 105-112.

[5]DONG S M, WANG Y, XIA Y M. Stress intensity factors for central cracked circular disk subjected to compression[J]. Engineering Fracture Mechanics,2004,71(7/8): 1135-1148.

[6]DONG S M, WANG Y, XIA Y M. A finite element analysis for using Brazilian disk in split Hopkinson pressure bar to investigate dynamic fracture behavior of brittle polymer materials[J]. Polymer Testing,2006,25(7): 943-952.

[7]周君, 汪洋, 夏源明. 有机玻璃纯Ⅰ型和纯Ⅱ型动态断裂行为的实验研究[J]. 高分子材料科学与工程, 2008,24(2): 10-13.(ZHOU Jun,WANG Yang, XIA Yuanming. Experimental study of dynamic fracture behavior of PMMA under pure mode-Ⅰ and pure mode-Ⅱ loading conditions[J]. Polymer Materials Science and Engineering,2008,24(2): 10-13.(in Chinese))

[8]崔智丽, 宫能平, 经来旺. 岩石非理想裂纹圆盘试件动态断裂韧性测试的有限元分析及试验研究[J]. 岩土力学, 2015,36(3): 694-702.(CUI Zhili, GONG Nengping, JING Laiwang. Experiment and finite element analysis of rock dynamic fracture toughness test on nonideal crack disc specimens[J]. Rock and Soil Mechanics,2015,36(3): 694-702.(in Chinese))

[9]李永东, 张男, 唐立强, 等. 裂纹面摩擦接触引起的断裂韧性增长的研究[J]. 力学学报, 2005,37(3): 280-286.(LI Yongdong, ZHANG Nan, TANG Liqiang, et al. Researches on the enhancement of fracture toughness induced by friction between crack faces[J]. Acta Mechanica Sinica,2005,37(3): 280-286.(in Chinese))

[10]ERARSLAN N, WILLIAMS D J. Mixed-mode fracturing of rocks under static and cyclic loading[J]. Rock Mechanics & Rock Engineering,2013,46: 1035-1052.

[11]DOROGOY A, BANKS-SILLS L. Effect of crack face contact and friction on Brazilian disk specimens: a finite difference solution[J]. Engineering Fracture Mechanics,2005,72(18): 2758-2773.

[12]李念斌, 董世明, 华文. 裂纹面接触对CCBD应力强度因子影响分析[J]. 岩土力学, 2017,38(8): 2395-2401.(LI Nianbin, DONG Shiming, HUA Wen. Analysis of effect of crack face contact on stress intensity factors for a centrally cracked Brazilian disk[J]. Rock and Soil Mechanics,2017,38(8): 2395-2401.(in Chinese))

[13]Swanson Analysis Systems Inc. ANSYS15.0, user’s manual[Z]. Pennsylvania, USA: Swanson Analysis Systems Inc, 2013.

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