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Effect of large elastic strains on cavitation instability predictions for elastic–plastic solids

✍ Scribed by Viggo Tvergaard

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
321 KB
Volume
36
Category
Article
ISSN
0020-7683

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✦ Synopsis

For an in_nite solid containing a void\ the cavitation instability limit is de_ned as the remote stressÐand strain state\ at which the void grows without bound\ driven by the elastic energy stored in the surrounding material[ Such cavitation limits have been analysed by a number of authors for metal plasticity as well as for nonlinear elastic solids[ The analyses for elasticÐplastic solids are here extended to consider the e}ect of a large initial yield strain\ and it is shown how the critical stress value decays for increasing value of the yield strain[ Analyses are carried out for remote hydrostatic tension as well as for more general axisymmetric remote stress _eld\ with an initially spherical void[ Di}erent levels of strain hardening are considered[

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