..., and compared to those predicted by the model. Extremely close agreement was obtained. Rather less expected was the ability of the GPS to determine the resonant frequency of the structure. Careful analysis of the outcome of the validation tests shows that remarkably good experimental data can be obtained from...

...R J BAINBRIDGE; C J METTEM; EUROCODE 5 © Thomas Telford and ICE 1998 TRADA TECHNOLOGY FLOORS TIMBER PREDICTION SIMPLIFIED NATURAL FREQUENCY CODES EUROCODES VIBRATIONS PERFORMANCE RESEARCH DESIGN METHODS TESTS FREQUENCIES WOOD MATERIALS Simpli ed natural frequency...

...-tuned such that its resonant frequency falls outside the spectrum of the seismic excitation.1 In most cases, where the dominant frequency 342 of the seismic excitation is higher than the fundamental frequency of the building structure, the structure can be made more exible so as to shift its...

... FREQUENCIES FINITE ELEMENTS MODELS MODELLING BEHAVIOUR ANALYSIS IMPULSES LOADS RESONANT SEPARATION VIBRATIONS MODES SHAPE EFFECT SPANDRELS WALLS GRANULAR BACKFILL FILL EXTRADOS DEFECTS DETECTION VOIDS CROWNS FREQUENCIES FUNCTIONS FRF STRUCTURAL INTEGRITY STRUCTURES MONITORING...

... on a cantilevered grandstand at Twickenham which showed that, although the empty structure had a clearly defined fundamental mode, two modes of vibration were apparent when the spectators were seated. The frequency of the empty stand was between the two frequencies of the occupied stand and a significant increase...

... this approximate methodis demonstrated by the posterioranalysis of 15 existing cable-stayedbridges andof two under construction, for part of whicehither the natural frequencies have been measured in situ or the critical wind speeds in wind tunnels. Notation cross-sectionof the girder cross-sectionof the staycable...