各向异性脆性材料动态断裂的实验研究

Translated title of the contribution: Experimental study of the dynamic fracture behaviors of anisotropic brittle materials

Guiyun Gao, Zheng Li, M. Negahban

Research output: Contribution to journalArticle

Abstract

Here the dynamic method of caustics was used to study the stress dynamic fracture behavior of anisotropic brittle materials by considering anisotropic stress distribution near the crack tip. The stress intensity factor and crack length versus time, and the fracture toughness were obtained. Results show that the fracture toughness of the specimens after plastic compression are different from that uncompressed specimens. And the fracture toughness of specimens transversely cut and axial crack propagation(TA) were larger than that transversely cut and transversely crack propagation(TT). The fracture toughness increases with compressive strain increases. The reflective method of caustics can be applied to non-transparent materials, which could be extended to the dynamic fracture analysis of anisotropic brittle materials such as rocks.

Original languageChinese
Pages (from-to)3979-3989
Number of pages11
JournalYanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering
Volume37
DOIs
Publication statusPublished - Oct 15 2018

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Keywords

  • Anisotropy
  • Dynamic fracture
  • Fracture mechanics
  • Fracture toughness
  • The method of caustics

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology
  • Geology

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