發(fā)布時(shí)間：2018-05-27 14:44

  本文選題：人致振動(dòng) + MTMD減振分析��； 參考：《武漢理工大學(xué)學(xué)報(bào)》2016年10期

【摘要】：以加速度響應(yīng)系數(shù)R為衡量指標(biāo),通過編制Matlab搜索程序得到了MTMD的最優(yōu)設(shè)計(jì)參數(shù)(頻率比和阻尼比);在此基礎(chǔ)上,分析了MTMD的數(shù)量、質(zhì)量比、去諧效應(yīng)和參數(shù)再調(diào)整對(duì)減振效果的影響;并通過數(shù)值算例進(jìn)行了驗(yàn)證。結(jié)果表明:隨著TMD個(gè)數(shù)的增加,MTMD的阻尼去諧效應(yīng)削弱,頻率去諧效應(yīng)趨勢(shì)卻增強(qiáng);當(dāng)頻率變動(dòng)超過P、Q兩臨界點(diǎn)時(shí),控制效果隨TMD個(gè)數(shù)的增加而降低;4-TMD已獲得了較好的減振效果,再增加TMD的個(gè)數(shù),減振效果增加不明顯。以4-TMD為研究對(duì)象,提出的頻率參數(shù)再調(diào)整的設(shè)計(jì)方法,有效提高了4-TMD在頻率去諧效應(yīng)下的控制效果。
[Abstract]:The optimum design parameters (frequency ratio and damping ratio) of MTMD are obtained by programming the Matlab search program with the acceleration response coefficient R as the index, and the quantity and mass ratio of MTMD are analyzed. The effect of detuning effect and parameter readjustment on the damping effect is verified by numerical examples. The results show that with the increase of the number of TMD, the damping detuning effect weakens, but the frequency detuning effect tends to increase, and when the frequency change exceeds the critical point of TMD, the control effect decreases with the increase of the number of TMD. When the number of TMD is increased, the effect of vibration reduction is not obvious. Taking 4-TMD as the research object, the design method of frequency parameter readjustment is proposed, which can effectively improve the control effect of 4-TMD under the frequency detuning effect.
【作者單位】： 武漢理工大學(xué)土木工程與建筑學(xué)院;武漢理工大學(xué)理學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(51508431) 中國(guó)博士后科學(xué)基金面上項(xiàng)目(2015M582288)
【分類號(hào)】：TU311.3

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