A study on lateral dynamic response of an axially moving beam under a moving load

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (12) : 59-63.

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A study on lateral dynamic response of an axially moving beam under a moving load

LUO Bing-hua, GAO Yue-fei, LIU Rong-hua, Zhao Peng

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Abstract

A finite element model of an axially moving beam under a moving load was established, and a method called node’s life and death was put forward to describe the state of nodes on a moving beam. This method let the number and length of the elements on the model to be constant, the parameters of nodes under different time steps transfer with less error, and thus it overcomes the shortcomings leaded by methods that change the number or length of elements. Finally, finite element dynamic model of gun firing in two different ways was established by this method and lateral dynamic response of muzzle points were calculated. Compared with previous algorithm, the result shows this method more in line with the actual condition.

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axially moving beam / moving load / dynamic response / finite element method

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LUO Bing-hua;GAO Yue-fei;LIU Rong-hua;Zhao Peng. A study on lateral dynamic response of an axially moving beam under a moving load[J]. Journal of Vibration and Shock, 2011, 30(12): 59-63