Simulation of the fracture shear dilation

Sergei Fomin, Ayumu Shimizu, K. Matsuki, K. Sakaguchi, Toshiyuki Hashida

Research output: Contribution to journalConference articlepeer-review


The changes of the stress regime in the natural rocks often cause the fracture shear displacements, which lead (due to fracture surface roughness) to fracture dilation. The simple approach for simulating this natural process is proposed. The method incorporates the experimental measuring of the real fracture surface topography, mathematical modeling of the synthetic fracture surfaces that share the same physical properties as real fracture, and numerical simulation of the fracture dilation due to fracture lateral slipping (shear dilation). Mathematical model is based on the spectral synthesis method and accounts for the fractal nature of the fracture surfaces. It is shown that the topography of the lengthy fracture surfaces in the natural rocks can be properly characterized with the data obtained from the small fragments of these surfaces. The algorithm for computing and predicting the fracture dilation and shear dilation angles in the natural rocks as functions of shear offset is proposed.

Original languageEnglish
Pages (from-to)216-221
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2002 Dec 1
EventSixth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering - St. Petersburg, Russian Federation
Duration: 2002 Jun 102002 Jun 16

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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