Component Test Results: Record Number 9

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Citation

TitleStudy On Mechanical Properties Of Laminated Rubber Bearing With Small Shape Factor
AuthorsMazda, T.; Ootori, Y.; Yabana, K.; Hirata, K.; Ishida, K.
PublicationProcedings of ASME-PVP-Vol.319-Seismic, Shock, and Vibration Isolation, 1995
ObjectivesTo test for the basic and ultimate characteristics of low-shape factor elastomeric bearings and verify the applicability of established methods of analysis with the results.
AbstractLaminated rubber bearings with a small shape factor are regarded as one of the most promising isolation devices to reduce the vertical seismic load of a nuclear power plant. In this study, three types of natural rubber bearings with different aspect ratios (diameter/total thickness of rubber) and one high-damping rubber bearing are tested under varied loading conditions. Basic characteristics and ultimate characteristics of the bearings are made clear, and applicability of estimation formula and analysis method are verified.

Component Details: Natural Rubber Bearing

Manufacturer Researchers (Mazda et al)
Rubber compound Natural Rubber
Diameter 209mm
Total rubber height 31.5mm
Rubber layer thickness 10.5mm
Connection type Bolted
First shape factor 5.0
Second shape factor 6.6
Shim plate thickness 4.4mm

Test Details

Axial load kN 84.1168.2
Loading frequency Hz 0.50.01
Loading type Sinusoidal, constant velocity
Other tests yes
Shear failure test yes
Shear strain % 2550100200

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