Detailed three-dimensional nonlinear finite element (FE) analyses and experimental moire studies are performed on a plate containing a moderately deep part-through surface crack to establish limits of HRR-dominance. The plate is subjected to predominantly far-field tensile loading. The material under investigation is ASTM A710 steel, which was constitutively modeled by large deformation J2 flow theory of plasticity. The FE mesh was carefully constructed to resolve both crack front fields (such as J-integral and CTOD) and global fields (such as surface displacements, strains). By comparing the J-integral and CTOD results with an earlier HRR-dominance study using (small strain) deformation theory of plasticity, we found little effect of the different formulations on the crack front fields. The global deformation fields from the numerical simulation are in good agreement with our experimental results. The eventual loss of HRR-dominance is intimately related to the interaction of the global plastic flow fields with those of the crack front.
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December 1991
Research Papers
Elastic-Plastic Deformation in Surface-Cracked Plates: Experiment and Numerical Analysis
Y.-Y. Wang,
Y.-Y. Wang
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
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D. M. Parks,
D. M. Parks
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
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W. R. Lloyd,
W. R. Lloyd
Fracture and Dynamic Behavior Group, Idaho National Engineering Laboratory, Idaho Falls, ID 83415
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W. G. Reuter,
W. G. Reuter
Fracture and Dynamic Behavior Group, Idaho National Engineering Laboratory, Idaho Falls, ID 83415
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J. Epstein
J. Epstein
Fracture and Dynamic Behavior Group, Idaho National Engineering Laboratory, Idaho Falls, ID 83415
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Y.-Y. Wang
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
D. M. Parks
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
W. R. Lloyd
Fracture and Dynamic Behavior Group, Idaho National Engineering Laboratory, Idaho Falls, ID 83415
W. G. Reuter
Fracture and Dynamic Behavior Group, Idaho National Engineering Laboratory, Idaho Falls, ID 83415
J. Epstein
Fracture and Dynamic Behavior Group, Idaho National Engineering Laboratory, Idaho Falls, ID 83415
J. Appl. Mech. Dec 1991, 58(4): 895-903 (9 pages)
Published Online: December 1, 1991
Article history
Received:
November 21, 1989
Revised:
June 22, 1990
Online:
March 31, 2008
Citation
Wang, Y., Parks, D. M., Lloyd, W. R., Reuter, W. G., and Epstein, J. (December 1, 1991). "Elastic-Plastic Deformation in Surface-Cracked Plates: Experiment and Numerical Analysis." ASME. J. Appl. Mech. December 1991; 58(4): 895–903. https://doi.org/10.1115/1.2897703
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