本文選題：鋼絲繩減振器 + 鋼絲繩��； 參考：《北京化工大學(xué)》2014年碩士論文

【摘要】：鋼絲繩減振器是通過(guò)鋼絲繩的股與股和絲與絲之間的滑移、摩擦來(lái)實(shí)現(xiàn)減振功能,當(dāng)被減振物體發(fā)生振動(dòng)時(shí),減振器產(chǎn)生動(dòng)態(tài)位移,鋼絲繩各股和各絲之間會(huì)產(chǎn)生摩擦阻尼,從而降低振動(dòng)。本論文對(duì)鋼絲繩和鋼絲繩減振器進(jìn)行理論分析、數(shù)值模擬和試驗(yàn)測(cè)試,研究其靜態(tài)性能和動(dòng)態(tài)響應(yīng),主要工作和結(jié)論如下： (1)對(duì)鋼絲繩的受力狀態(tài)進(jìn)行力學(xué)分析,重點(diǎn)分析單股鋼絲繩的軸向應(yīng)力和彎曲剛度,得到了中心鋼絲的最小取值公式。應(yīng)用ANSYS軟件,采用分層等效的方法,模擬鋼絲繩的中心股、側(cè)股以及整繩的軸向拉伸變形,得到了載荷位移變化關(guān)系曲線,進(jìn)而取得了鋼絲繩等效的彈性模量。設(shè)計(jì)了鋼絲繩中心股、側(cè)股以及整繩的軸向拉伸試驗(yàn),以驗(yàn)證模擬結(jié)果的準(zhǔn)確性。 (2)建立鋼絲繩減振器有限元分析模型,針對(duì)其構(gòu)造的復(fù)雜性和預(yù)應(yīng)力及內(nèi)摩擦力的不確定性,在實(shí)驗(yàn)基礎(chǔ)上提出虛擬材料本構(gòu)關(guān)系的方法,模擬鋼絲繩減振器的載荷位移變化關(guān)系。同時(shí)考察結(jié)構(gòu)參數(shù)的變化對(duì)三個(gè)方向靜剛度的影響,結(jié)果表明：纏繞偏角對(duì)鋼絲繩減振器的影響非常��；在同樣的載荷條件下,纏繞寬度增加時(shí),減振器的靜變形增加,即靜剛度有所降低,寬度對(duì)縱向和橫向靜剛度的影響趨勢(shì)與垂向一致,但與垂向相比影響程度較��；減振器的靜變形量隨圈數(shù)的增加而減小,即靜剛度增加。 (3)對(duì)鋼絲繩減振器的動(dòng)態(tài)特性進(jìn)行了模擬分析,得到了固有頻率和振型,通過(guò)諧響應(yīng)分析比較了不同阻尼比下減振器的振動(dòng)特點(diǎn)；通過(guò)瞬態(tài)分析模擬了減振器在受動(dòng)態(tài)載荷過(guò)程中的沖擊響應(yīng)。
[Abstract]:The vibration absorber of steel wire rope is realized by sliding and friction between the strands and strands and wires and wires of the wire rope. When the vibration of the damped object occurs, the vibration absorber produces dynamic displacement, and friction damping will occur between each strand and wire of the wire rope. Thus reducing the vibration. In this paper, the theoretical analysis, numerical simulation and experimental test of wire rope and wire rope shock absorber are carried out to study its static performance and dynamic response. The main work and conclusions are as follows: The stress state of wire rope is analyzed, the axial stress and bending stiffness of single wire rope are analyzed, and the formula of minimum value of center wire is obtained. By using ANSYS software, the axial tensile deformation of the central strands, side strands and the whole rope of the wire rope is simulated by using the method of stratified equivalent, and the load-displacement relation curve is obtained, and the equivalent elastic modulus of the wire rope is obtained. The axial tensile tests of the central strands, side strands and the whole rope were designed to verify the accuracy of the simulation results. The finite element analysis model of wire rope shock absorber is established. Aiming at the complexity of structure and the uncertainty of prestress and internal friction, a method of constitutive relation of virtual material is put forward on the basis of experiment. The load displacement relation of wire rope shock absorber is simulated. At the same time, the influence of structural parameters on the static stiffness in three directions is investigated. The results show that the influence of winding deflection angle on the vibration absorber of wire rope is very small, and the static deformation of the absorber increases with the increase of winding width under the same load conditions. The influence of width on longitudinal and transverse static stiffness is similar to that of vertical, but the influence degree is smaller than that of vertical, and the static deformation of shock absorber decreases with the increase of the number of cycles, that is, the static stiffness increases. The dynamic characteristics of steel wire rope damper are simulated and analyzed, and the natural frequency and vibration mode are obtained. The vibration characteristics of the absorber under different damping ratios are compared by harmonic response analysis. The shock response of shock absorber under dynamic load is simulated by transient analysis.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TB535

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 吳善躍;朱石堅(jiān);黃映云;;鋼絲繩減振器沖擊載荷特性模型研究[J];船舶力學(xué);2009年01期

2 陳維民，劉鋼，，劉玉蘭;環(huán)形鋼絲繩減振器剛度和阻尼性能試驗(yàn)研究[J];材料科學(xué)與工藝;1996年01期

3 熊世樹(shù),唐家祥;鋼絲繩隔震器三向性能試驗(yàn)研究[J];華中理工大學(xué)學(xué)報(bào);1998年02期

4 楊文芳,李林安,鄭煒;艦用鋼絲繩考慮擠壓力條件下的有限元模型[J];機(jī)床與液壓;2003年06期

5 郭張霞,潘玉田,裴暢貴;鋼絲繩隔振器的元件及其特性[J];機(jī)械管理開(kāi)發(fā);2005年02期

6 王庸祿;;鋼絲繩結(jié)構(gòu)與接觸應(yīng)力分析[J];金屬制品;1986年06期

7 陳衛(wèi)民;緱慶林;;對(duì)鋼絲繩結(jié)構(gòu)伸長(zhǎng)及預(yù)張拉的認(rèn)識(shí)[J];金屬制品;2011年03期

8 申仲翰;歐陽(yáng)怡;;裝有鋼絲繩隔振器的非線性系統(tǒng)在隨機(jī)激勵(lì)下的響應(yīng)分析[J];機(jī)械強(qiáng)度;1988年03期

9 馬軍;葛世榮;張德坤;;鋼絲繩股內(nèi)鋼絲的載荷分布[J];機(jī)械工程學(xué)報(bào);2009年04期

10 馬軍;葛世榮;張德坤;;鋼絲繩股內(nèi)鋼絲應(yīng)力—應(yīng)變分布的計(jì)算模型及數(shù)值模擬[J];機(jī)械工程學(xué)報(bào);2009年11期

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