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A dynamic analysis of a coupled beam/slider system

机译:耦合梁/滑块系统的动力学分析

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The paper deals with transverse vibration of a beam with moving boundary conditions. In order to examine the transfer of energy between a moving support and a vibrating beam under assumption of zero slope of the beam elastic line at the moving support, dynamic analysis of a coupled beam/slider system is carried out. The moving support is modelled as a slider attached to a spring which realizes definite boundary conditions. Equations of motion are derived using Hamilton's principle. Because length of the beam varies appropriate transformations of time and position variables are made to convert the solution space into a rectangle and, subsequently, to solve the partial differential equation of transverse vibration of the beam using the FDM. The phenomenon of the energy flow between the slider and the beam is a subject of the detailed analysis. The beam vibration with a fixed formula of length is examined, too. The dynamic characteristics of the system is brought forward from spectral analysis of numerical solutions.
机译:本文讨论了具有移动边界条件的梁的横向振动。为了在假定梁弹性线在运动支撑件处为零斜率的情况下检查运动支撑件与振动梁之间的能量转移,对耦合梁/滑块系统进行了动力学分析。将移动支架建模为连接到弹簧的滑块,该滑块可实现确定的边界条件。运动方程式是使用汉密尔顿原理导出的。由于梁的长度变化,因此需要进行时间和位置变量的适当转换,以将解空间转换为矩形,然后使用FDM求解梁的横向振动的偏微分方程。滑块和梁之间的能量流现象是详细分析的主题。还检查了具有固定长度公式的梁振动。从数值解谱分析出发,提出了系统的动态特性。

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