First and second order stress extrapolation for mode I and mode II edge cracks |
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Authors: | Byeong S. Kim Alan W. Eberhardt |
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Affiliation: | Department of Materials and Mechanical Engineering, University of Alabama at Birmingham, Birmingham, Alabama 35294, U.S.A. |
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Abstract: | ![]() The use of linear and second order stress extrapolation to obtain KI and KII in two-dimensional finite element models of a thick plate containing an edge crack was examined. Three loading cases were studied, including classical Mode I and Mode II problems and a problem of tribological contact. Linear extrapolation was observed to yield accurate predictions of KI in cases of dominant Mode I loading. In Mode II situations, notably where the crack faces experienced compressive normal stresses, second order extrapolation was observed to improve estimates of KII. |
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Keywords: | finite elements stress extrapolation Mode II tribology |
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