Elastic-Plastic Analysis of a Thick-Walled Composite Tube Subjected to Internal Pressure

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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

Author(s):
Chen, Peter C.
Author Organization(s):
ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET LABS
Descriptive Note:
Final rept.
Pagination:
0022

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
ARCCB-TR-89027
Monitor Series:
USAARDEC
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.2_Understand; JCA_3.2_Engagement; JCA_3_Force Application; JCA_5.3_Planning; JCA_3.2.1_Kinetic Means; JCA_4.6_Engineering
Modernization Areas:
Space
Communities of Interest:
Weapons Technologies
Descriptor(s):
*GUN BARRELS, *COMPOSITE MATERIALS, STRESS ANALYSIS, INTERFACES, PROJECTILES, STIFFNESS, DISPLACEMENT, NUMERICAL ANALYSIS, ELASTIC PROPERTIES, COMPOSITE STRUCTURES, GRAPHITE, STRAIN(MECHANICS), SHELLS(STRUCTURAL FORMS), STEEL, LININGS, ARMY EQUIPMENT, MATHEMATICAL ANALYSIS, ORGANIC MATERIALS, LIGHTWEIGHT, WALLS, REPLACEMENT, PLASTIC PROPERTIES, HOT GASES, JACKETS, STRUCTURAL COMPONENTS, POLYIMIDE PLASTICS, INTERNAL PRESSURE, THICK WALLS, STRESSES, THICKNESS
Field(s)/Group(s):
Laminates and Composite Materials, Guns
Keyword(s):
ORGANIC COMPOSITES, GRAPHITE BISMALEIMIDE, LPN PRON 4A8HF8YB1A F
Report Date:
1989 Oct 01