ENERGY-BASED COHESIVE CRACK PROPAGATION MODELING
The authors propose an energy-based technique for the finite-element modeling of mixed-mode cohesive crack propagation. The approach estimates the propagation of a quasistatic cohesive crack based on the principle of energy conservation. The crack propagation direction is assumed to be perpendicular to the direction of the maximum tensile principal stress at the cohesive crack tip. A generalized virtual crack-extension procedure including the cohesive crack model is employed to evaluate efficiently the crack propagation condition. The energy-based approach is theoretically more basic and numerically more precise than the widely used strength-based cohesive crack modeling approach. A two-dimensional automatic mixed-mode discrete crack propagation modeling program has been developed that can model both nonlinear and linear elastic crack propagation problems. The numerical efficiency and convergence behavior of the proposed technique are demonstrated through two example problems: a three-point bend beam and a single edge-notched shear beam.
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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:
- XIE, M
- Gerstle, W H
- Publication Date: 1995-12
Language
- English
Media Info
- Features: Appendices; Figures; References; Tables;
- Pagination: p. 1349-58
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Serial:
- Journal of Engineering Mechanics
- Volume: 121
- Issue Number: 12
- Publisher: American Society of Civil Engineers
- ISSN: 0733-9399
- EISSN: 1943-7889
- Serial URL: http://ascelibrary.org/journal/jenmdt
Subject/Index Terms
- TRT Terms: Cracking; Energy; Energy conservation; Finite element method; Fracture mechanics; Mathematical models; Numerical analysis
- Uncontrolled Terms: Crack propagation
- Old TRIS Terms: Energy models
- Subject Areas: Bridges and other structures; Design; Energy; Environment; Highways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00715305
- Record Type: Publication
- Files: TRIS
- Created Date: Jan 6 1996 12:00AM