基于梁理論的龍門起重機動力學(xué)研究
[Abstract]:The dynamic response of crane in the working process is an important subject in the research of crane dynamics. With the rapid development of mechanical engineering, the demand of gantry crane is increasing, and the vibration of gantry crane has become a problem that can not be ignored. Although much work has been done on the dynamics of gantry cranes at home and abroad, there are few researches on crane dynamics based on beam theory, and there are still many problems to be further studied. This paper takes gantry crane as the research object, based on Euler-Bernoulli beam theory and Timoshenko beam theory, combined with structural vibration dynamics, numerical analysis method and finite element method and other related theories. The vibration characteristics of the coupling vibration system between the main beam and the trolley and the gantry-trolley-crane coupling vibration system are systematically studied in this paper. At the same time, with the help of dynamic simulation software, the dynamic simulation analysis of crane is carried out. The main contents are as follows: (1) based on the Euler-Bernoulli beam theory and ignoring the transverse shear deformation of the beam, the vibration model of the coupling system between the main girder and the trolley of the gantry crane is established, and the differential equation of the coupling vibration of the system is derived. The numerical method is used to solve the problem, and the variation of the natural frequency of the coupling system between the main beam and the trolley with the relative position of the vehicle on the main beam is obtained. (2) based on the Lagrange equation, the dynamic equations of the lifting system are established, and the factors affecting the lifting deflection are analyzed. The coupled vibration model of gantry crane gantry-trolley-crane system is established according to the actual working conditions of gantry crane. Considering the shear deformation and rotational effect of beam, the differential equation of coupled vibration system is established based on Timoshenko beam theory. The modes of gantry crane structure are obtained by finite element method, and the coupled vibration equation of the system is replaced by the finite element method. The numerical solution of the differential equation of vibration of the coupled system is obtained by using the numerical method. The vibration characteristics of the coupled vibration system are analyzed. (3) the three-dimensional solid model of gantry crane is established by using CAD software SolidWorks, and the dynamic simulation analysis of gantry crane is made by introducing the finite element analysis software ALGOR,. The natural frequencies and modes of the whole structure are obtained when the car is in different positions of the main beam, and the results are analyzed. At the same time, the results of solid modeling and beam element modeling are compared and analyzed. The rigid-flexible coupling motion of gantry crane is simulated by ALGOR nonlinear material motion simulation, and the response of the main beam is obtained when the trolley is moving.
【學(xué)位授予單位】:武漢理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2012
【分類號】:TH213.5
【參考文獻】
相關(guān)期刊論文 前10條
1 彭獻;劉子建;洪家旺;;勻變速移動質(zhì)量與簡支梁耦合系統(tǒng)的振動分析[J];工程力學(xué);2006年06期
2 王述真;胡吉全;張春茂;;大型龍門起重機主梁起升動態(tài)特性研究[J];港口裝卸;2009年01期
3 趙青,雍曉紅;移動車輛荷載作用下梁橋的強迫振動分析[J];合肥工業(yè)大學(xué)學(xué)報(自然科學(xué)版);2004年10期
4 任成高;寧朝陽;楊紅;;基于Algor的C型門吊有限元分析[J];機電產(chǎn)品開發(fā)與創(chuàng)新;2008年05期
5 李彬;劉錦陽;洪嘉振;;計及剪切變形的Timoshenko梁的剛-柔耦合動力學(xué)[J];計算力學(xué)學(xué)報;2006年04期
6 吳曉;鐘斌;張則強;;小車吊重系統(tǒng)擺振動力學(xué)模型及仿真[J];計算機仿真;2007年11期
7 趙曉華;張謝東;陳湛;梅宇;;移動車輛荷載作用下簡支箱梁動力特性的數(shù)值分析[J];武漢理工大學(xué)學(xué)報(交通科學(xué)與工程版);2011年02期
8 蘇晴;盧耀祖;張氫;;岸邊集裝箱起重機上部結(jié)構(gòu)非線性耦合動力分析方法[J];機械設(shè)計;2008年03期
9 汪軍;沈姣;;橋式起重機吊重隨小車運行時的擺動仿真[J];機械研究與應(yīng)用;2010年06期
10 梁承姬;王重華;梁崗;;港口集裝箱起重機虛擬操作訓(xùn)練系統(tǒng)的小車—吊重運動模型研究[J];起重運輸機械;2005年12期
相關(guān)博士學(xué)位論文 前1條
1 劉攀;梁—質(zhì)量塊系統(tǒng)的動力學(xué)行為研究[D];華中科技大學(xué);2008年
相關(guān)碩士學(xué)位論文 前9條
1 張歡;基于虛擬樣機的大型船用甲板起重機結(jié)構(gòu)動力學(xué)仿真研究[D];武漢理工大學(xué);2011年
2 郭永娟;起重機吊重偏擺系統(tǒng)的動力學(xué)仿真與控制研究[D];東北林業(yè)大學(xué);2011年
3 楊丹;軌道集裝箱龍門起重機結(jié)構(gòu)運動數(shù)值仿真及動力學(xué)分析[D];武漢理工大學(xué);2006年
4 錢光浩;基于ANSYS的龍門起重機門架結(jié)構(gòu)動態(tài)設(shè)計與優(yōu)化研究[D];武漢理工大學(xué);2008年
5 肖建軍;基于虛擬樣機的門式起重機動力學(xué)仿真研究[D];西南交通大學(xué);2008年
6 張寧;移動車輛荷載作用下橋梁豎向隨機振動分析[D];西南交通大學(xué);2010年
7 孫建銳;基于剛?cè)狁詈夏P偷拈T座起重機動力學(xué)仿真研究[D];武漢理工大學(xué);2010年
8 肖博;柔性懸掛對門式起重機動力響應(yīng)影響的研究[D];武漢理工大學(xué);2010年
9 游福賀;車—橋耦合系統(tǒng)的振動分析[D];湖南大學(xué);2010年
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