Abstract
A dynamic-crack-curving criterion, which is valid under pure Mode I or combined Modes I and II loadings and which is based on either the maximum circumferential stress or minimum strain-energy-density factor at a reference distance ofr 0 from the crack tip, is verified with dynamic-photoelastic experiments. Directional stability of a Mode I crack propagation is attained when\(r_o= \frac{1}{{128\pi }}(\frac{{K_r }}{{\sigma _{ox} }})^2 V_o^2 (C,C_1 ,C_2 ) > r_c \) wherer c =1.3 mm for Homalite-100 used in the dynamic-photoelastic experiments.
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Ramulu, M., Kobayashi, A.S. Dynamic crack curving—A photoelastic evaluation. Experimental Mechanics 23, 1–9 (1983). https://doi.org/10.1007/BF02328674
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DOI: https://doi.org/10.1007/BF02328674