TY - JOUR
T1 - An efficient procedure for determining mixed-mode energy release rates in practical problems of delamination
AU - Davidson, Barry D.
AU - Hu, Hurang
AU - Yan, Hongwei
N1 - Funding Information:
This work was supportedb y the FederalA viation Administrationu nder Grant 94-G-022T. he authors would also like to thank Dr. Jerrold M. Housner, Head, Computational Mechanics Branch at NASA Langley ResearchC enterf or the permissiont o use the code COMET, and Dr. John T. Wang and Tina Lotts for their invaluablea ssistanceo n the use of this code.
PY - 1996/11/15
Y1 - 1996/11/15
N2 - A computationally efficient procedure is presented for the prediction of mixed-mode strain energy release rates in practical problems of delamination. In this procedure, an analytical crack tip element analysis is used for the determination of all singular field quantities. By comparison with two- and three-dimensional finite element results, the procedure is shown to be accurate for mixed-mode problems where mode I, mode II and/or mode III crack tip singularities are present. The procedure is applicable for those cases where a near-tip inverse-square-root singularity exists, as well as those where an oscillatory singularity exists. For these latter cases, an alternative approach to using oscillatory field quantities to characterize crack advance is suggested.
AB - A computationally efficient procedure is presented for the prediction of mixed-mode strain energy release rates in practical problems of delamination. In this procedure, an analytical crack tip element analysis is used for the determination of all singular field quantities. By comparison with two- and three-dimensional finite element results, the procedure is shown to be accurate for mixed-mode problems where mode I, mode II and/or mode III crack tip singularities are present. The procedure is applicable for those cases where a near-tip inverse-square-root singularity exists, as well as those where an oscillatory singularity exists. For these latter cases, an alternative approach to using oscillatory field quantities to characterize crack advance is suggested.
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U2 - 10.1016/S0168-874X(96)80007-2
DO - 10.1016/S0168-874X(96)80007-2
M3 - Article
AN - SCOPUS:0347307220
SN - 0168-874X
VL - 23
SP - 193
EP - 210
JO - Finite Elements in Analysis and Design
JF - Finite Elements in Analysis and Design
IS - 2-4
ER -