Paper Title:
Numerical Simulation Study on Size Effect of Dynamic Properties of Coarse Materials
  Abstract

Though the test level has improved highly, the original grading curve of coarse materials should be reduced in some scale in dynamic triaxial test. This method must affect the difference between the test results and the real results, which is called scale effect. In this paper, the scale effect was studied by using particle flow code (PFC) based on dynamic triaxial tests. The relationship between microscopic shear modulus and the maximum particle diameter can be simulated by hyperbolic function. The results show that the dynamic shear modulus and damping ratio are increased with the sample size increase. The normalized dynamic shear modulus vs. normalized dynamic shear strains of different size samples are located in a narrow space which can be simulated by modified Hardin-Drnevich model formula. The parameters of maximum shear modulus and damping ratio of different sample size can be simulated by power functions.

  Info
Periodical
Advanced Materials Research (Volumes 368-373)
Chapter
Chapter 6: Geotechnical Engineering and Underground Space Structure
Edited by
Qing Yang, Li Hua Zhu, Jing Jing He, Zeng Feng Yan and Rui Ren
Pages
2749-2754
DOI
10.4028/www.scientific.net/AMR.368-373.2749
Citation
G. Yang, Q. Y. Gao, D. Q. Gao, Y. C. Liu, "Numerical Simulation Study on Size Effect of Dynamic Properties of Coarse Materials", Advanced Materials Research, Vols. 368-373, pp. 2749-2754, 2012
Online since
October 2011
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Price
$32.00
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