DYNAMIC CRITERIA FOR CRACK NUCLEATION AND GROWTH.
Abstract
Because of the observed rate dependence of fracture in an elastic-plastic medium, it is clear that a static criterion for fracture in such a medium is insufficient, and even a quasidynamic criterion is somewhat too indefinite to be satisfying. Also, the geometry of a crack is sufficiently complex to ensure that any accurate model will necessarily require numerical computations. Therefore, a simplified but analytic model will have value because it can give quick insight to the physical situation; and how it can be modified. Thus, the purpose of this discussion is to develop a simple, and therefore approximate, model of the conditions that must be met before a crack can grow in size in an elastic-plastic medium.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1966
- Accession Number
- AD0482903
Entities
People
- J. J. Gilman
Organizations
- University of Illinois Urbana–Champaign