›› 2004, Vol. 25 ›› Issue (5): 694-699.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Analytic study on strain localization of rock under uniaxial compression by strain gradient plasticity theory

CHEN Gang 1, PAN Yi-shan 2   

  1. 1. Institute of System Science and Mathematics, Liaoning Technical University, Fuxin 123000, China; 2. Department of Engineering Mechanics, Liaoning Technical University, Fuxin 123000, China
  • Received:2003-01-23 Online:2004-05-10 Published:2014-07-17

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Abstract: The paper sets up plastic strain gradient plasticity increment constitutive model of rock based on adding rock’s internal length parameter in the yielding function.And then, analytic expressions between the strain localization band width and its inclination angle in plane strain is presented based on von Mises’ yielding criterion .Conditions of maximal value and minimal value of the strain localization band width and critical angle of rock destroy are obtained .Variation of inclination angle of the strain localization band is discussed in the difference of Poisson’s ratios and . At last, coefficient of internal friction in Coulomb-Navier criterion is explained by the strain localization band width and inclination angle.

Key words: strain gradient, strain gradient plasticity theory;strain localization band

CLC Number: 

  • TU451
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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