Shear deformation in granular materials

Granular materials are comprised of solid, athermal grains. Whilst immune to thermal motion, these grains move and diffuse when they undergo shear deformation. Here we introduce this process of shear-induced...

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An entropy model for shear deformation of granular materials

International Journal of Engineering Science ◽

10.1016/0020-7225(80)90072-5 ◽

1980 ◽

Vol 18 (7) ◽

pp. 989-998

Author(s):

Kanatani Ken-ichi

Keyword(s):

Shear Deformation ◽

Granular Materials ◽

Entropy Model

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Analysis of Factors Influencing the Shear Deformation of Granular Materials

Geotechnical Testing Journal ◽

10.1520/gtj11062 ◽

2004 ◽

Vol 27 (5) ◽

pp. 11062

Author(s):

L David Suits ◽

TC Sheahan ◽

A Assaad ◽

E Masad

Keyword(s):

Shear Deformation ◽

Granular Materials ◽

Factors Influencing

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Application Of Electron Probe Analyses Of Minerals In Discussing The Relationship Between Ductile Deformation And Metamorphism

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100134855 ◽

1990 ◽

Vol 48 (2) ◽

pp. 250-251

Author(s):

Fan Guochuan ◽

Sun Zhongshi

Keyword(s):

Chemical Composition ◽

Shear Deformation ◽

Electron Probe ◽

General Rule ◽

Granulite Facies ◽

Ductile Deformation ◽

Higher Temperature ◽

Ductile Shear ◽

The Relationship ◽

Ductile Shear Deformation

Under influence of ductile shear deformation, granulite facies mineral paragenesis underwent metamorphism and changes in chemical composition. The present paper discusses some changes in chemical composition of garnet in hypers thene_absent felsic gnesiss and of hypersthene in rock in early and late granulite facies undergone increasing ductile shear deformation .In garnet fetsic geniss, band structures were formed because of partial melting and resulted in zoning from massive⟶transitional⟶melanocrate zones in increasing deformed sequence. The electron-probe analyses for garnet in these zones are listed in table 1 . The Table shows that Mno, Cao contents in garnet decrease swiftly from slightly to intensely deformed zones.In slightly and moderately deformed zones, Mgo contents keep unchanged and Feo is slightly lower. In intensely deformed zone, Mgo contents increase, indicating a higher temperature. This is in accord with the general rule that Mgo contents in garnet increase with rising temperature.

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