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Peak values not appropriate for predicting the discomfort caused by transient vibration and experienced by standing people
For motions with high crest factors, the vibration discomfort of standing people tends to be underestimated by rms methods (with an exponent of 2) and overestimated by rmq methods (with an exponent of 4). The optimum evaluation method in this study with standing people exposed to fore-and-aft, lateral and vertical vibration had an exponent of about 3.0 for transient motions centred on 1 Hz and an exponent of about 3.5 for motions centred on 8 Hz. The findings of this study with standing people are broadly consistent with studies using different motions and different psychophysical methods with...

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