Determining elastic constants of transversely isotropic rocks using Brazilian test and iterative procedure

研究成果: Article同行評審

35 引文 斯高帕斯(Scopus)

摘要

The elastic constants of rocks are the basic parameters for rock mechanics, and play a very important role in engineering design. There are many laboratory methods to determine the elastic constants of transversely isotropic rocks, and the Brazilian test is a popular method. This paper presented a method combination of the Brazilian test, back calculation, and iterative procedure to evaluate the five independent elastic constants of transversely isotropic rocks in laboratory. The strain data at the centre of discs were obtained using Brazilian test. The stresses at the centre of discs were computed using numerical programs. By using back calculation, the temporary elastic constants were computed after the stresses and stains were substituted into elastic mechanics equations. After iterative procedure, the convergent values of the elastic constants can be obtained. One numerical example and three experimental cases were proposed to show the applicability of this method. The convergent values of the five independent elastic constants can be obtained in no more than 10 iterative cycles. The results coming from numerical analysis method exhibited satisfactory outcome in accordance with those of generalized reduced gradient method. The merits of this method include convenient specimen preparation of the Brazilian test, simple iterative procedure, and readily available commercially numerical programs, so that this method can be easily popularized in research and engineering analysis.

原文English
頁(從 - 到)219-234
頁數16
期刊International Journal for Numerical and Analytical Methods in Geomechanics
32
發行號3
DOIs
出版狀態Published - 2008 2月 25

All Science Journal Classification (ASJC) codes

  • 計算力學
  • 材料科學(全部)
  • 岩土工程與工程地質
  • 材料力學

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