Elastic-Plastic Analysis of a Thick-Walled Composite Tube Subjected to Internal Pressure
Abstract
Organic composites have become familiar structural components in many applications that require high stiffness and low weight. A current problem in Army cannon design is to replace a portion of the steel wall thickness with an organic composite. The steel liner maintains the tube-projectile interface and shields the composite from the extremely hot gases. The steel also has elastic properties in the radial direction that are better than the composited for transferring loads. The theoretical and experimental results for an organic composite-jacketed steel tube subjected to internal pressure in the elastic range were described in a previous report. The present report presents an elastic-plastic analysis of a thick-walled composite tube subjected to internal pressure. The composite tube is constructed of a steel linear and a graphite- bismaleimide outer shell. Analytical expressions for stresses, strains, and displacements are derived for all cases where the structure is subjected to internal pressure. The loading ranges include elastic, elastic-plastic, and fully-plastic up to failure. Numerical results for the hoop strains in several composite tubes are presented. Keywords: Composite structures; Composite jacket; Steel liners; Elastic-plastic analysis; Thick-walled gun tubes. (EDC)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1989
- Accession Number
- ADA215258
Entities
People
- Peter C. Chen
Organizations
- United States Army Armament Research, Development and Engineering Center