Determination of the dynamic stress intensity factorsK I d andK II d,for a mixed-mode propagating crack |
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Authors: | Liu Cheng |
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Affiliation: | (1) Department of Mechanics, Peking University, Peking, China |
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Abstract: | In this paper, the dynamic propagation problem of a mixed-mode crack was studied by means of the experimental method of caustics. The initial curve and caustic equations were derived under the mixed-mode dynamic condition. A multi-point measurement method for determining the dynamic stress intensity factors,K I d , andK II d , and the position of the crack tip was developed. Several other methods were adopted to check this method, and showed that it has a good precision. Finally, the dynamic propagating process of a mixed-mode crack in the three-point bending beam specimen was investigated with our method. |
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Keywords: | caustic method stress intensity factor dynamic fracture |
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