Analysis of high-strain-rate elastic-plastic crack growth

作者: L.B. Freund , J.W. Hutchinson , P.S. Lam

DOI: 10.1016/0013-7944(86)90181-5

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摘要: Abstract For crack-tip speeds which are even a modest fraction of the lowest elastic wave speed material, strain rates that induced at material points close to crack tip enormous. Experimental evidence is available suggests flow stress fairly strong function plastic rate anticipated. An approximate analysis high-strain-rate crack-growth process has been developed on basis this observation, interpreted as implying dominate rates. The features reviewed, and results more recent complete numerical same model described. Using growth macroscopic cleavage in mild steel vehicle for discussing model, it found appears capture essence those temperatures supported. indicate deficiencies higher temperatures.

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