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  本文選題：負剛度 + 被動隔振��； 參考：《蘇州科技大學》2017年碩士論文

【摘要】：通過對正負剛度并聯(lián)隔振器隔振機理分析,設(shè)計了一種基于負剛度理論的被動減振裝置。通過設(shè)計參數(shù)優(yōu)化,建立了系統(tǒng)的剛度函數(shù)表達式及平衡位置處的零剛度條件,進而細化設(shè)計出隔振裝置。為驗證該設(shè)施的隔振效果,將其應(yīng)用在框架模型和橋梁模型的抗震中,證明了該設(shè)備能夠通過純粹的機械機制產(chǎn)生負剛度,達到結(jié)構(gòu)減震效果。文中所設(shè)計負剛度裝置(NSD)是通過一個大的彈簧,使結(jié)構(gòu)遠離中心位置,從而產(chǎn)生負剛度的力學行為。利用數(shù)值計算方法分析負剛度結(jié)構(gòu)系統(tǒng)的內(nèi)部特性,研究了影響負剛度隔振設(shè)備設(shè)計影響因數(shù),并且通過蒙特卡羅響應(yīng)面結(jié)合全概率方法分析其敏感性。最后通過實驗驗證了本文設(shè)計的隔振器降頻和隔振的效果和抗沖擊性能。本文主要研究工作分為以下幾個方面:論文首先闡述了研究背景和意義,簡單介紹了結(jié)構(gòu)振動控制的概念、分類�？偨Y(jié)了國內(nèi)外現(xiàn)有振動控制的研究狀況和理論背景。最后介紹了負剛度隔振器的研究背景及意義,進而引出本課題的研究動機。其次通過對負剛度隔振器各參數(shù)之間的優(yōu)化尋找他們之間的關(guān)系,并采用數(shù)值計算驗證了文中所設(shè)計負剛度隔振器具有降頻和隔振的效果。接著采用蒙特卡羅響應(yīng)面結(jié)合全概率方法分析了影響負剛度隔振設(shè)備影響因數(shù)的靈敏度。并通過實驗驗證了隔振器降頻和隔振的效果。最后總結(jié)了課題的研究結(jié)論,并對進一步研究給出一些建議。
[Abstract]:Based on the analysis of the vibration isolation mechanism of the parallel vibration isolator with positive and negative stiffness, a passive vibration absorber based on the theory of negative stiffness is designed. By optimizing the design parameters, the expression of the stiffness function and the zero stiffness condition at the equilibrium position are established, and then the vibration isolation device is designed. In order to verify the vibration isolation effect of the equipment, it is applied to the seismic resistance of the frame model and the bridge model. It is proved that the equipment can produce negative stiffness through pure mechanical mechanism and achieve the effect of structural vibration absorption. The negative stiffness device (NSD) is designed to make the structure far away from the center of the structure through a large spring, which results in the mechanical behavior of negative stiffness. The internal characteristics of the negative stiffness structural system are analyzed by numerical method. The influence factor of the design of the negative stiffness vibration isolator is studied. The sensitivity of the system is analyzed by the Monte Carlo response surface combined with the full probability method. Finally, the effect and impact resistance of the vibration isolator designed in this paper are verified by experiments. The main research work of this paper is as follows: firstly, the background and significance of the research are described, and the concept and classification of structural vibration control are briefly introduced. The research status and theoretical background of vibration control at home and abroad are summarized. Finally, the research background and significance of negative stiffness isolator are introduced. Secondly, by optimizing the parameters of the negative stiffness isolator, the relationship between them is found, and the numerical calculation is used to verify that the negative stiffness isolator designed in this paper has the effect of reducing frequency and isolating vibration. Then the sensitivity of the influence factor of the negative stiffness isolation equipment is analyzed by using the Monte Carlo response surface and the full probability method. The effect of frequency reduction and vibration isolation is verified by experiments. Finally, the conclusion of the research is summarized, and some suggestions for further research are given.
【學位授予單位】：蘇州科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TU352.1

【參考文獻】

相關(guān)期刊論文 前10條

1 汪志昊;許艷偉;趙順波;霍洪媛;;基于表觀質(zhì)量負剛度效應(yīng)的調(diào)諧質(zhì)量阻尼器頻率調(diào)節(jié)[J];科學技術(shù)與工程;2016年27期

2 張曉平;何琳;周煒;;基于磁致負剛度裝置的低頻隔振平臺理論設(shè)計[J];振動與沖擊;2016年15期

3 董光旭;張希農(nóng);羅亞軍;嚴博;;一種磁性并聯(lián)低剛度隔振器[J];航空動力學報;2016年06期

4 王勇;李舜酩;程春;江星星;;立方速度反饋控制的準零剛度隔振器動力學特性分析[J];振動工程學報;2016年02期

5 湯虎;李建中;邵長宇;;中小跨徑板式橡膠支座梁橋橫向抗震性能[J];中國公路學報;2016年03期

6 熊世樹;龔微;查道鋒;;擬負剛度控制隔震結(jié)構(gòu)的概率地震危險性評估[J];廣州大學學報(自然科學版);2015年06期

7 張曉平;何琳;周煒;;基于一種新型磁致負剛度結(jié)構(gòu)的低頻隔振系統(tǒng)分析與設(shè)計[J];船舶工程;2015年09期

8 龔微;熊世樹;;擬負剛度隔震B(yǎng)enchmark模型減震效果及適應(yīng)性[J];華中科技大學學報(自然科學版);2015年08期

9 劉延斌;韓秀英;馬佳佳;尹晨旭;;基于氣動肌肉和負剛度機構(gòu)的主、被動寬頻隔振研究[J];振動與沖擊;2014年24期

10 王志非;吳繼華;;含有負剛度夾雜復合材料穩(wěn)定性問題[J];佳木斯大學學報(自然科學版);2014年04期

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本文編號：2114433