CONSTITUTIVE MODELS FOR HEALING OF MATERIALS WITH APPLICATION TO COMPACTION OF CRUSHED ROCK SALT
Time allows certain materials to heal. Healing implies that microcracks and microvoids reduce in size, with a corresponding increase in stiffness and strength--features precisely opposite of those normally linked with continuum damage mechanics. The authors propose a continuum healing mechanics model within a framework that automatically meets the restrictions of thermodynamics. Rate-independent and rate-dependent formulas are provided. Specific evolution equations are given for a scalar isotropic assumption and comparisons with a limited amount of experimental data on crushed rock salt are given as well. Good correlations exist for changes in time of Young's modulus and inelastic strain. The preliminary findings provide a good base for other examples of healing, such as the curing of concrete, the sintering of ceramics, and the compaction of cohesive sands and clays.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/07339399
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Corporate Authors:
American Society of Civil Engineers
345 East 47th Street
New York, NY United States 10017-2398 -
Authors:
- Miao, S
- Wang, M L
- Schreyer, H L
- Publication Date: 1995-10
Language
- English
Media Info
- Features: Appendices; Figures; References; Tables;
- Pagination: p. 1122-29
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Serial:
- Journal of Engineering Mechanics
- Volume: 121
- Issue Number: 10
- Publisher: American Society of Civil Engineers
- ISSN: 0733-9399
- EISSN: 1943-7889
- Serial URL: http://ascelibrary.org/journal/jenmdt
Subject/Index Terms
- TRT Terms: Alternatives analysis; Classical field theory; Compaction; Equations; Loss and damage; Materials; Mathematical models; Stiffness; Strength of materials; Thermodynamics
- Uncontrolled Terms: Models
- Old TRIS Terms: Damage reversal
- Subject Areas: Highways; Materials; I32: Concrete;
Filing Info
- Accession Number: 00712688
- Record Type: Publication
- Files: TRIS
- Created Date: Oct 4 1995 12:00AM