VISCOELASTIC DAMPER DEVICE

PROBLEM TO BE SOLVED: To suitably satisfy the demand characteristics of a damper device for a building and civil engineering structure through specification in terms of physical properties forming an industrially useful index and more concrete specification in terms of a material of polyurethane. SO...

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Bibliographic Details
Main Authors OHARA RIICHIRO, KAWAKUBO RIE, KOJIMA MASAAKI
Format Patent
LanguageEnglish
Published 18.04.2000
Edition7
Subjects
BLASTING
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MEANS FOR DAMPING VIBRATION
MECHANICAL ENGINEERING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
SHOCK-ABSORBERS
SPRINGS
THEIR PREPARATION OR CHEMICAL WORKING-UP
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To suitably satisfy the demand characteristics of a damper device for a building and civil engineering structure through specification in terms of physical properties forming an industrially useful index and more concrete specification in terms of a material of polyurethane. SOLUTION: This viscoelastic damping device provides displacement damping characteristics between rigid bodies 1 and 1 by a viscoelastic material 2 interposed between the rigid bodies 1 and 1. In this case, in a dynamic viscoelastic test having a frequency of 1.0 Hz and amplitude of 20% the viscoelastic material 2 is a resin composition consisting mainly of polyurethane and the resin composition having heq at 20 deg.C being 0.2 or more, keq (S/D) at 20 deg.C being 1.0 kgf/cm2 or more, a ratio of heq at 0 deg.C and 40 deg.C being 1.7 or less, a ratio of the keq at 0 deg.C and 40 deg.C being 100 or less, and a break limit strain at shearing deformation of the resin composition being 150% or more.
Bibliography:Application Number: JP19980280828