Accession Number : ADD016550

Title :   Vibration-Damping Structural Component.

Descriptive Note : Patent, Filed 26 Nov 91, patented 16 Aug 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Barrett, David J

Report Date : 16 Aug 1994

Pagination or Media Count : 3

Abstract : A laminated structural component with superior resistance to flexural vibrations is provided comprising two load-bearing layers and a viscoelastic damping layer sandwiched therebetween. Each of the load-bearing layers comprises an outer stiffness sublayer and an inner compliant sublayer, the compliant sublayer being positioned between the outer stiffness sublayer and the viscoelastic damping layer. The compliant sublayers have an extensional elastic modulus which is less than that of the stiffness sublayers, and greater than that of the viscoelastic damping layer. The laminated structural component experiences greater relative in-plane displacements between the load-bearing layers, and preserves transverse static stiffness.

Descriptors :   *DAMPING, *VIBRATION, *LAMINATES, DISPLACEMENT, LAYERS, STIFFNESS, STRUCTURAL COMPONENTS, VISCOELASTICITY, MODULUS OF ELASTICITY, CYCLIC LOADS, FATIGUE(MECHANICS), STRAIN RATE, SHEAR STRESSES

Subject Categories : Laminates and Composite Materials
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE