A model explaining the Rule for Calculating the Break-up Time of homogeneous ductile metals
✍ Scribed by E. Hirsch
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 416 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0721-3115
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✦ Synopsis
Abstract
It was shown in a previous paper^(1)^ that the break‐up time of homogenious ductile metals which elongate due to explosions, is equal to the sample's smallest initial dimension (thickness) divided by the velocity V~pl~ which characterizes the metal. It is attempted to explain this rule by suggesting a break‐up mechanism where holes caused by a pile‐up of vacancies are formed at the metal surface and gradually increase until breaking it. This model also predicts the existence of a strain rate threshold below which other mechanisms dominate the break‐up process. Its validity is supported by experimental evidence which is also presented.