Optimal design of antisymmetric hybrid laminates against thermal buckling

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Journal of Thermal Stresses; (USA)

DOI:https://doi.org/10.1080/01495739008927024· OSTI ID:6616876

Adali, S; Duffy, K J ^[1]

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1. Natal Univ., Durban (South Africa)

Optimal fiber orientations and layer thicknesses of antisymmetric, angle-ply laminates are determined with the objective of maximizing the buckling temperature subject to an equal mass or equal thickness constraint. The laminated plate is constructed as a sandwich hybrid structure which is made of outer layers of high-modulus fiber composite material and inner layers of low-modulus fiber composite material. Numerical results are given for graphite/glass and boron/glass material combinations. Comparative studies of hybrid and nonhybrid laminates indicate that the results for hybrid cases do not always fall between those of nonhybrid cases. Moreover, the hybrid construction, as compared to a single-material construction, is found to improve the thermal stability of the structure in some cases. Optimal ply angles are found to display several jump discontinuities when plotted against the aspect ratio. 18 refs.

• OSTI ID: 6616876
• Journal Information: Journal of Thermal Stresses; (USA), Journal Name: Journal of Thermal Stresses; (USA) Vol. 13:1; ISSN 0149-5739; ISSN JTSTD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360600* -- Other Materials
360603 -- Materials-- Properties
ASPECT RATIO
BORON
BUCKLING
CARBON
COMPOSITE MATERIALS
DESIGN
ELASTICITY
ELEMENTAL MINERALS
ELEMENTS
EXPANSION
FATIGUE
FIBERS
GLASS
GRAPHITE
MATERIAL BUCKLING
MATERIALS
MECHANICAL PROPERTIES
MINERALS
NONMETALS
OPTIMIZATION
ORIENTATION
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
REINFORCED MATERIALS
REINFORCED PLASTICS
SEMIMETALS
SYNTHETIC MATERIALS
TENSILE PROPERTIES
THERMAL EXPANSION
THERMAL FATIGUE
THERMOELASTICITY