Effects of Anisotropies in Rotary Extruded Liners
Abstract
Conical shaped charge liners manufactured by the rotary extrusion process exhibit a characteristic "spin compensation" not found in an ordinary liner. It has been determined that this ability to counteract degradation of the jet when the round is being subjected to an external rotation is dependent on the manner in which certain crystal planes are aligned with respect to the surface of the cone. Direct correlation between the preferred orientation of the planes and the spin compensation frequency has been found. In addition, it has been demonstrated that other factors, such as residual stress, grain shaped, etc., do not influence the compensation rate. It is proposed that under detonation loading there exists a component of collapse velocity of the liner wall that is not directed toward the axis of the cone. This tangential component results from the preferred orientation of the crystal planes, and gives an angular velocity to the collapsing cone elements that compensates for the angular velocity due to external rotation of the round. Experimental evidence is offered to show that a metal having a strong preferred orientation will deform anisotropically under detonation loading.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1959
- Accession Number
- AD0315197
Entities
People
- C. M. Glass
- G. L. Moss
- M. K. Gainer
Organizations
- Ballistic Research Laboratory