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Unformatted text preview: are E = 70GPa, = 0.3, a = 0.01m, t = 0.02m, L = 0.15m, h = 0.01m. (a) (b) 3. Consider the thinwalled box beam in the figure. The top wall contains a crack parallel to the xaxis. The crack length is 0.02m (i.e., a = 0.01m). Assume that the material is brittle and that modes I and II have the same toughness value of 5MPa√m. If the box beam has already been subjected to a torque T = 100kNm, estimate the maximum additional axial force N by using the mixed mode fracture criterion....
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This note was uploaded on 06/06/2011 for the course EAS 4200C taught by Professor Kim during the Spring '09 term at University of Florida.
 Spring '09
 Kim

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