Ductile spallation fracture and the mechanics of void growth and coalescence under shock-loading conditions

✍ Scribed by P.F. Thomason

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 298 KB
• Volume: 47
• Category: Article
• ISSN: 1359-6454
• DOI: 10.1016/s1359-6454(99)00223-2

✦ Synopsis

AbstractÐA model of ductile spallation fracture is developed from a dynamic void-growth model which takes full account of the eects of material inertia and strain-rate sensitivity on void-growth rates under shock-loading conditions. The void-growth model is used to estimate the dynamic inertial stresses arising at incipient void coalescence and thus allow for these eects in the critical condition for dynamic microvoid coalescence. The theoretical results from the dynamic ductile-fracture model are shown to be in good general agreement with previously published experimental results for ductile spallation fracture in tantalum.