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发表于 2008-11-14 15:00:31
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来自 大连理工大学
跟你查了一下,sciencedirect上没提供全文,只有下面的信息。
Fracture characteristics of three metals subjected to various strains, strain rates, temperatures and pressures
Engineering Fracture Mechanics, Volume 21, Issue 1, 1985, Pages 31-48
Gordon R. Johnson, William H. Cook
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This paper considers fracture characteristics of OFHC copper, Armco iron and 4340 steel. The materials are subjected to torsion tests over a range of strain rates, Hopkinson bar tests over a range of temperatures, and quasi-static tensile tests with various notch geometries. A cumulative-damage fracture model is introduced which expresses the strain to fracture as a function of the strain rate, temperature and pressure. The model is evaluated by comparing computed results with cylinder impact tests and biaxial (torsion-tension) tests.
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