本文選題：鋼絲繩隔振器　切入點(diǎn)：動(dòng)力學(xué)模型　出處：《中北大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：振動(dòng)問題普遍存在于動(dòng)力工程技術(shù)領(lǐng)域的很多方面，例如，采掘設(shè)備、艦船動(dòng)力設(shè)備、物流運(yùn)輸、重載車輛、武器系統(tǒng)、航天器試驗(yàn)與發(fā)射等都存在著振動(dòng)問題。對(duì)其物理特性的研究與控制，也一直是相關(guān)行業(yè)關(guān)注的重點(diǎn)技術(shù)問題之一。 在掌握振動(dòng)、隔振基本理論和隔振器相關(guān)知識(shí)的基礎(chǔ)上，以鋼絲繩隔振器為主要研究對(duì)象，通過理論計(jì)算，制作了同向鋼絲繩隔振器和反向鋼絲繩隔振器，對(duì)其靜力學(xué)模型進(jìn)行了分析計(jì)算；將其應(yīng)用在自制的托物小車上，并建立了該隔振系統(tǒng)動(dòng)力學(xué)模型，且對(duì)其隔振特性進(jìn)行了實(shí)驗(yàn)研究和對(duì)比；最后，采用最小二乘辨識(shí)法對(duì)所建立的動(dòng)力學(xué)模型進(jìn)行了參數(shù)識(shí)別。目的在于解決實(shí)際生產(chǎn)過程中碰到的振動(dòng)沖擊問題，減小振源對(duì)設(shè)備的不良影響，對(duì)鋼絲繩隔振器的設(shè)計(jì)及隔振器的性能了解都會(huì)有所提高。 靜態(tài)實(shí)驗(yàn)結(jié)果表明，鋼絲繩隔振器靜態(tài)試驗(yàn)穩(wěn)定性十分好，經(jīng)多次長(zhǎng)時(shí)間最大壓縮變形無明顯機(jī)械損傷；鋼絲繩隔振小車動(dòng)態(tài)實(shí)驗(yàn)結(jié)果表明，鋼絲繩隔振器具有非線性特性，在X，Y，Z三個(gè)方向均有較好的隔振效果；所制作的鋼絲繩隔振小車的固有頻率大概在350 400Hz頻段內(nèi)；有較寬的隔振優(yōu)勢(shì)頻帶，在100 330Hz頻段內(nèi)，X，Y，，Z三個(gè)方向均具有較好的傳遞性；通過對(duì)所建立的隔振系統(tǒng)的動(dòng)力學(xué)模型進(jìn)行參數(shù)識(shí)別，比較參數(shù)辨識(shí)的結(jié)果經(jīng)理論計(jì)算得出的頻響函數(shù)曲線與實(shí)驗(yàn)測(cè)得的頻響函數(shù)曲線擬合情況，表明兩者有較好的一致性，證實(shí)了所建立的隔振系統(tǒng)的動(dòng)力學(xué)模型的有效性，及基于最小二乘法的參數(shù)辨識(shí)法的可信性。
[Abstract]:Vibration problems are common in many aspects of power engineering technology, such as extractive equipment, ship power equipment, logistics transportation, heavy-duty vehicles, weapon systems, There are vibration problems in spacecraft test and launch, and the research and control of its physical characteristics has always been one of the key technical problems concerned by related industries. On the basis of mastering the basic theory of vibration, vibration isolation and relative knowledge of vibration isolator, taking the wire rope vibration isolator as the main research object, through the theoretical calculation, the syndromic wire rope isolator and the reverse wire rope isolator are made. The static model is analyzed and calculated, the dynamic model of the vibration isolation system is established, and the vibration isolation characteristics are studied and compared. The method of least square identification is used to identify the parameters of the dynamic model. The purpose of this paper is to solve the problem of vibration shock in the actual production process and to reduce the adverse effect of vibration source on the equipment. The design of wire rope isolator and the performance of the isolator will be improved. The static test results show that the static test stability of the wire rope isolator is very good, and the mechanical damage is not obvious after several times of maximum compression deformation, and the dynamic experiment results of the wire rope vibration isolator show that the wire rope isolator has nonlinear characteristics. It has good vibration isolation effect in all three directions, the natural frequency of the steel wire rope vibration isolator is about 350 ~ 400 Hz, and there is a wide dominant frequency band for vibration isolation, which has good transmission in all three directions in the 100 ~ 330Hz frequency band. Through the parameter identification of the dynamic model of the vibration isolation system, the fitting of the frequency response function curve obtained by the theoretical calculation and the experimental frequency response function curve is compared, which shows that there is a good agreement between them. The validity of the dynamic model of the vibration isolation system and the credibility of the parameter identification method based on the least square method are verified.
【學(xué)位授予單位】：中北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TB535.1

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