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General Strength Criterion for Geomaterials

open access: yesInternational Journal of Geomechanics, 2003
This note presents the results of a study on the variation of the strength of geomaterials. A general isotropic strength criterion is proposed which unifies the peak strength and critical state (or steady state) strength into one strength criterion. The proposed criterion describes the strength of a geomaterial in terms of its current stress state, its
Liu, M D, Carter, J P
core   +4 more sources

Strength Criterion for Intact Rock

open access: yesIndian Geotechnical Journal, 2016
Based on studies of the peak strength for soil by the authors, a simple strength criterion for intact rock is obtained in the general principal stress space. There are two material parameters in the equation. One is the uniaxial compression strength of the rock; the other describes the influence of stress level, and similar parameters are well studied ...
Martin D. Liu, Buddhima Indraratna
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A strength criterion for rocks

Mechanics of Materials, 2021
Abstract A simple strength criterion J 2 = α + β σ 3 is investigated to describe the ultimate stress capacity of rocks. This criterion takes the intermediate principal stress σ 2 into consideration. The nonlinear parabolic form on the meridian plane makes the present criterion is more suitable in rock mechanics than the ...
Chunguang Li   +3 more
openaire   +1 more source

A criterion of strength for orthotropic materials

Fibre Science and Technology, 1975
The criterion of strength for anisotropic media proposed by Gol'denblat and Kopnov2 is adopted in this paper. The invariants for the strength function having orthotropic symmetry are used to formulate a criterion of strength for orthotropic materials.
Chi-Lung Huang, P.G. Kirmser
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A Criterion of Local Strength

Strength of Materials, 2004
We propose a local criterion of brittle strength for structurally inhomogeneous materials based on the size effect of mechanical properties of materials under the conditions of stress concentration. It is assumed that the function of local strength of the material depends on the scaling factor equal to the ratio of the size of the zone of stress ...
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RELATIVE STRENGTH AS A CRITERION FOR INVESTMENT SELECTION

The Journal of Finance, 1967
AN EXTENSIVE BODY of literature has recently emanated from scholarly sources stating that successive stock market price changes are statistically independent (i.e., that the study of past price trends and patterns-known in the trade as technical analysis-is no more useful in predicting future price movements than throwing a dart at the list of stocks ...
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A criterion for ascertaining the strength of composite materials

Computers & Structures, 1985
Abstract This paper deals with the failure strength of composite materials in which the reinforcing filaments are parallel. According to this theory the strength of a unidirectional composite material is determined by a particular intermediate strain value and the orientation of the reinforcing filaments relative to the principal stresses.
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Strength criterion for materials with different strengths in tension and compression

Strength of Materials, 1996
It is shown that the fracture of materials which have different strengths in tension and compression and are highly sensitive to the sign of the spherical tensor can be described by using a criterion of the ductility of anisotropic bodies based on the invariance of the form of the limiting surface. Calculated values of breaking stress are compared with
V. N. Bastun   +2 more
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A New Strength Criterion for Concrete

ACI Structural Journal, 2002
A new strength criterion defining the general ultimate stress of concrete is presented. A linear interpolation shape function in the deviatoric plane based on the Unified Twin-Shear Strength theory for all types of materials is developed. The criterion for concrete adopts the generalized linear interpolation functions in the deviatoric plane and the ...
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