Treatment of anisotropic damage development within a scalar damage formulation

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This paper is concerned with describing a damage mechanics formulation which provides for non-isotropic effects using a scalar damage variable. An investigation has been in progress for establishing the constitutive behavior of rock salt at long times and low to moderate confining pressures in relation to the possible use of excavated rooms in rock salt formations as repositories for nuclear waste. An important consideration is the effect of damage manifested principally by the formation of shear induced wing cracks which have a stress dependent orientation. The analytical formulation utilizes a scalar damage parameter, but is capable of indicating the non- ... continued below

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15 p.

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Chan, K.S.; Bodner, S.R. & Munson, D.E. November 1, 1996.

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  • Chan, K.S. Southwest Research Inst., San Antonio, TX (United States)
  • Bodner, S.R. Technion-Israel Inst. of Tech., Haifa (Israel). Dept. of Mechanical Engineering
  • Munson, D.E. Sandia National Labs., Albuquerque, NM (United States)

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

This paper is concerned with describing a damage mechanics formulation which provides for non-isotropic effects using a scalar damage variable. An investigation has been in progress for establishing the constitutive behavior of rock salt at long times and low to moderate confining pressures in relation to the possible use of excavated rooms in rock salt formations as repositories for nuclear waste. An important consideration is the effect of damage manifested principally by the formation of shear induced wing cracks which have a stress dependent orientation. The analytical formulation utilizes a scalar damage parameter, but is capable of indicating the non- isotropic dependence of inelastic straining on the stress state and the confining pressure. Also, the equations indicate the possibility of volumetric expansions leading to the onset of tertiary creep and eventually rupture if the damage variable reaches a critical value.

Physical Description

15 p.

Notes

INIS; OSTI as DE96013950

Source

  • Innovative computational methods for fracture and damage, Dublin (Ireland), 30 Jun - 1 Jul 1996

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  • Other: DE96013950
  • Report No.: SAND--96-1318C
  • Report No.: CONF-9606285--1
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 405755
  • Archival Resource Key: ark:/67531/metadc675942

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • November 1, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • June 14, 2016, 1 p.m.

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Chan, K.S.; Bodner, S.R. & Munson, D.E. Treatment of anisotropic damage development within a scalar damage formulation, article, November 1, 1996; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc675942/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.