Mechanical characterization of seismic base isolation elastomers
Conference
·
OSTI ID:5420248
From the various devices proposed for seismic isolators, the laminated elastomer bearing is emerging as the preferred device for large buildings/structures, such as nuclear reactor plants. The laminated bearing is constructed from alternating thin layers of elastomer and metallic plates (shims). The elastomer is usually a carbon filled natural rubber that exhibits damping when subjected to shear. Recently, some blends of natural and synthetic rubbers have appeared. Before candidate elastomers can be used in seismic isolation bearings, their response to design-basis loads and beyond- design-basis loads must be determined. This entails the development of constitutive models and and then the determination of associated material parameters through specimen testing. This paper describes the methods used to obtain data for characterizing the mechanical response of elastomers used for seismic isolation. The data provides a data base for use in determining material parameters associated with nonlinear constitutive models. In addition, the paper presents a definition for a damping ratio that does not exhibit the usual reduction at higher strain cycles. 2 refs., 6 figs., 1 tab.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5420248
- Report Number(s):
- ANL/CP-72558; CONF-910817--20; ON: DE91015680
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220900* -- Nuclear Reactor Technology-- Reactor Safety
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
42 ENGINEERING
420500 -- Engineering-- Materials Testing
BENCHMARKS
BUILDINGS
ELASTICITY
ELASTOMERS
ENGINEERING
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL STRUCTURES
MECHANICAL TESTS
NATURAL RUBBER
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PLATES
POLYMERS
REACTOR SAFETY
REACTORS
RUBBERS
SAFETY
SAFETY ENGINEERING
SEISMIC ISOLATION
SHEAR
STRAINS
SYNTHETIC MATERIALS
TENSILE PROPERTIES
TESTING
220900* -- Nuclear Reactor Technology-- Reactor Safety
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
42 ENGINEERING
420500 -- Engineering-- Materials Testing
BENCHMARKS
BUILDINGS
ELASTICITY
ELASTOMERS
ENGINEERING
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL STRUCTURES
MECHANICAL TESTS
NATURAL RUBBER
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PLATES
POLYMERS
REACTOR SAFETY
REACTORS
RUBBERS
SAFETY
SAFETY ENGINEERING
SEISMIC ISOLATION
SHEAR
STRAINS
SYNTHETIC MATERIALS
TENSILE PROPERTIES
TESTING