Elasticity theory equations and fracture condition for materials of varying moduli

Journal Article · Sat Nov 01 00:00:00 EST 1986 · Sov. Min. Sci. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF02504108· OSTI ID:6004307

Oleinikov, A I

Many massive rocks and composite materials belong to the class of materials of varying moduli with definite distinct deformation and strength properties under tension and compression. The results of experiments indicate that the difference between the properties of materials of different moduli is not limited to tension and compression cases but can also appear clearly for any change in the form of the state of stress. Elasticity theory equations are constructed here to describe the strain of materials of varying moduli as well as the dependence of the strength properties on the form of the state of strain. Tests were done on coal, limestone, diabase and cement and results are shown. Using the dependencies obtained, Poisson's ratio and the elastic modulus can be calculated for these rocks. The equations and conditions of fracture proposed, are written in a simple invariant form.

• Research Organization: Scientific-Research Mining Institute, Krivoi Rog, USSR
• OSTI ID: 6004307
• Journal Information: Sov. Min. Sci. (Engl. Transl.); (United States), Vol. 22:1; Other Information: Translated from Fiz. Tekh. Probl. Razrab. Polezn. Iskop.; 22: 1, 12-19(Jan-Feb 1986)
• Country of Publication: United States
• Language: English

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