Buckling of Long Rod Penetrators
Abstract
The dynamic stability of long rod penetrators is examined theoretically. The basic assumption behind the analysis, which is based on a paper by Abrahamson and Goodier, is that plastic bending occurs as a perturbation superimposed on a uniform axial stress. The perturbations are controlled by the strain hardening curve, and the axial stress is the yield stress. The basic analysis introduces nondimensional scaling parameters in a natural way and leads to estimates for time of buckling and the buckled wavelength. The time to buckle is then compared with two load release times, one arising from complete penetration or stoppage and the other from reflections at the rear of the projectile. Tentative design criteria for the dynamic stability of long rod penetrators, based on the time comparisons, are discussed and presented graphically.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1973
- Accession Number
- AD0762535
Entities
People
- Thomas W. Wright
Organizations
- Ballistic Research Laboratory