Державний Вищий Навчальний Заклад "Донецький Національний Технічний Університет"
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Measurement Of Mechanical Vibrations Or Ultrasonic Waves
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Abstract
The method for protection of construction against resonance at vibratory loads includes measurement of the frequency of forced vibrations of the construction at which at increase of the frequency of forced vibrations stressed state of construction is changed. At period when the ratio of the frequencies of repetitive-forced vibrations to natural partially changed vibrations is within m and n, wherein m and n – values of the ratios of frequencies of forced and natural vibrations, jump-like increase of rigidity of construction to maximum is performed, if the frequency of repetitive-forced vibrations is not larger than np, where p– initial frequency of natural vibrations of the construction. And if the frequency of repetitive-forced vibrations is larger than np, jump-like decrease of rigidity of the construction to initial state is performed.
UAU201400957U2014-02-032014-02-03Method for protection of construction against resonance at vibratory loads
UA91559U
(en)