APPLICATION OF THE PRINCIPLES OF FRACTURE MECHANICS TO RECOILLESS RIFLE PROBLEMS
Abstract
T e basic mathematical model on which fracture mechanics is founded is discussed in some detail. This model assumes infinite strain elasticity, and the crack or flaw is regarded as an interior free surface in an elastic solid. In terms of this model, the force conjugate to speed of crack extension is the rate of dissipation of strain energy termed G. Experimental equipment for easuring the crack resist nce of a material as the crack extends from a starting notch or fatigue crack is described. The equipment furnishes values of crack extension as a function of stress in which the actual crack plus its associated inelastic deformations are analyzed as equivalent crack length. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1962
- Accession Number
- AD0286660
Entities
People
- Carl M. Carman
Organizations
- Army Research Office