Implementation of two geologic constitutive models in the HONDO finite-element code

Technical Report · Sun May 01 00:00:00 EDT 1983

DOI:https://doi.org/10.2172/6020399· OSTI ID:6020399

Swenson, D V

Two constitutive models for use with geologic materials have been incorporated into the HONDO finite-element program. Both models have the same behavior in tension, using a stress criterion to form cracks normal to the maximum principal stress. In compression, the two models give upper and lower bound solutions to the unconfined postfailure strength. The first model uses a Coulomb criterion to form explicit shear cracks, while the second model uses an elastic-plastic formulation developed by Krieg. Two sample applications, an indentor test and fracture of a borehole, are presented.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6020399
• Report Number(s): SAND-83-0238; ON: DE83013529
• Resource Relation: Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
• Country of Publication: United States
• Language: English

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FRACTURES
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SHEAR PROPERTIES
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