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Experimental and theoretical study of static-dynamic mixed mode brittle fracture of rock

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Abstract

A new criterion of static-dynamic state mixed mode brittle fracture initiation in rock is suggested, i. e. the distortion strain energy criterion. When t→∞, the static-state distortion strain energy criteria and the formula for determiming static-state fracture angle are obtained. The new static-state criterion, suggested by authors, is in good agreement with the author’s experimental results. In addition, the relative accuracy of three current fracture theories and the new criterion in predicting static-state mixed-mode initiation fracture loading and fracture angle in rock have been evaluated experimentally.

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References

  1. Li Zhenzi, Li Liyun, Sun Zongqi. Brittle fracture criterion and experimental research in rock under mixed-mode loads. In: Processdings of the Int Syposium on Modern Mining Technology, Taian, Shangdong, 1988. 395–402

  2. Li Zhenzi. Elementary engineering fracture mechanics (in Chinese). Changsha: Central South Univ of Technology Press, 1990. 225–264

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  3. Li Liyun, Li Zhenzi, Sun Zongqi. Mixed-mode fracture tests and analyses of rock. Chinese J of Rock Mechanics and Engineering (in Chinese), 1994, 13(2):134–140

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  4. Li Zhenzi, Wang Hui, Zhou Hongbin, et al. Dynamic fracture initiation tests and criterion in rock under the dynamic I and II mixed-mode loading. ICM & M’97, Tokyo, Japan, 1997. 20–22

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Authors and Affiliations

  1. Department of Architecture Engineering, Central South University of Technology, 410083, Changsha, China

    Li Zhenzi, Lin Guoxiang, Xu Jicheng, Zhang Jingyi & Luo Zhang

  2. Department of Civil Engineering, Yan-shan University, 066004, Hebei, China

    Zhou Hongbin & Li Huijian

Authors
  1. Li Zhenzi
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  2. Lin Guoxiang
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  3. Xu Jicheng
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  4. Zhang Jingyi
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  5. Luo Zhang
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  6. Zhou Hongbin
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  7. Li Huijian
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Additional information

Project supported by the National Natural Science Foundation of China

Synopsis of the first author Li Zhenzi, professor, born in Aug. 1938. Research area are rock fracture mechanics, static and dynamic state fracture toughness and mixed-made fracture in rock.

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Li, Z., Lin, G., Xu, J. et al. Experimental and theoretical study of static-dynamic mixed mode brittle fracture of rock. J Cent. South Univ. Technol. 5, 120–123 (1998). https://doi.org/10.1007/s11771-998-0051-6

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  • DOI: https://doi.org/10.1007/s11771-998-0051-6

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