Accession Number : ADA182535

Title :   Some Results on Orthotropic High Pressure Cylinders.

Descriptive Note : Final technical rept.,

Corporate Author : ARMY ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET WEAPONS LAB

Personal Author(s) : O'Hara,G P

PDF Url : ADA182535

Report Date : Jun 1987

Pagination or Media Count : 32

Abstract : With the current emphasis on composite materials, it has become necessary to use the thick wall cylinder equations for cylindrically orthotropic materials. This report is a preliminary investigation of these equations. The most important result is that many of the old ideas of high pressure cylinders will have to be changed. When the cylinder is very thin (wall ratio near 1.0), the simple thin-wall equations are adequate. However, as thickness increases, stress variation through the wall becomes large and the full thick-wall solution is necessary. In orthotropic (composite) cylinders this transition happens at a lower wall ratio. Furthermore, the maximum useful wall ratio may become smaller for a composite cylinder. (Keywords:) Cylinder, Stress, Strain, Composite, Orthotropic Cylinders.

Descriptors :   *COMPOSITE STRUCTURES, *CYLINDRICAL BODIES, *COMPOSITE MATERIALS, HIGH PRESSURE, EQUATIONS, THIN WALLS, THICK WALLS, RATIOS, WALLS, STRESSES, VARIATIONS, THICKNESS, STIFFNESS, FIBERS, MATHEMATICAL ANALYSIS, PRESSURE VESSELS, SIZES(DIMENSIONS), ISOTROPISM, STRENGTH(MECHANICS), ANISOTROPY, STRAIN(MECHANICS)

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE