Paper Title:
Two-Parameter Parabolic Mohr Strength Criterion and Its Damage Regularity
  Abstract

A series of formulas about two-parameter parabolic Mohr strength criterion(2-PP Mohr criterion) are derived. Based on the results of uniaxial tension and uniaxial compression tests, the parameters involved in the criterion can be easily determined, then the criterion in terms of the major principal stress and the minor principal stress is derived, and the damage pattern is also discussed. At last, the formulas about the rupture angle and the friction angle are presented, and their relationship is also given. 2-PP Mohr criterion can describe not only shear but also tensile failure. In this criterion the ratio of the uniaxial compression strength and the uniaxial tension strength is not confined as in Griffith criterion. The formula about the rupture angle provides steady theoretical foundation for determining the direction of crack faces and damage patterns in the computation of macro crack propagation. In fact, Griffith criterion is only a special case of the two-parameter parabolic Mohr strength criterion proposed in this present paper.

  Info
Periodical
Key Engineering Materials (Volumes 306-308)
Edited by
Ichsan Setya Putra and Djoko Suharto
Pages
327-332
DOI
10.4028/www.scientific.net/KEM.306-308.327
Citation
C. G. Li, X. R. Ge, H. Zheng, S. L. Wang, "Two-Parameter Parabolic Mohr Strength Criterion and Its Damage Regularity", Key Engineering Materials, Vols. 306-308, pp. 327-332, 2006
Online since
March 2006
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Price
$35.00
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