A criterion for the time dependence of dynamic fracture

✍ Scribed by Floyd R. Tuler; Barry M. Butcher

• Publisher: Springer Netherlands
• Year: 1968
• Tongue: English
• Weight: 309 KB
• Volume: 4
• Category: Article
• ISSN: 1573-2673
• DOI: 10.1007/bf00186808

✦ Synopsis

Dynamic fracture is a time-dependent phenomena in which the spall stress depends on the stress pulse duration. It is shown that the empirical relation between the spall stress and the square root of the stress gradient is equivalent to a simple impulse criterion. A more general criterion based on the concept of cumulative damage is proposed, and good agreement is obtained between calculated and observed values of the spall layer thickness in aluminum.