Methodology for the vibration-isolation testing of full-scale structures fitted with rate-dependent rubber bearings
This paper describes how the Pseudodynamic Method (PSD) can be adapted to test structures equipped with rate-dependent rubber bearings mounted in various configurations. It will be shown that the loading-rate sensitivity of rubber-like materials is such that the dynamic tangent stiffness is offset (with respect to a nominal quasi static level) without altering its general characteristics, and that correcting the strain-rate term is equivalent to adding further isolators in parallel to those already existing. The corollary of this is that wider bearings (or a greater number of them) may be added numerically on-line. Conversely, in analogy to springs working in series, it will be shown how, by adapting the displacement coordinate basis, it is also possible to reproduce the performance of isolators having twice the height of the prototypes actually used.
Bibliographic Reference: Paper presented : First European Conference on Structural Control, Barcelona (ES), May 29-31, 1996
Availability: Available from (1) as Paper EN 39942 ORA
Record Number: 199610967 / Last updated on: 1996-09-30
Original language: en
Available languages: en