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A simple method for choosing the parameters of a two degree-of-freedom tuned vibration absorber

机译:一种选择二自由度调谐减振器参数的简单方法

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摘要

In this paper a new method for choosing the parameters of a Two degree-of-freedom (dof) tuned vibration absorber (TVA) with translational and rotational degrees of freedom is described. The dynamic stiffness approach is used to model the device, which is constrained to move in the translational direction and to rotate. The choice of the parameters involves a procedure similar to that proposed by Den Hartog in the optimization of a single dof TVA, in which the invariant (fixed) points of the frequency response function of the TVA and the host structure are used to determine the stiffness of the TVA for a given mass. In this paper the approach is extended and applied to the design of a 2dof TVA, and a numerical procedure is used to determine the optimum amount of damping. The method is simple and easy to implement. A numerical example is presented to compare the performance of the 2dof TVA designed using the method described here with the optimal 2dof TVA. It is shown that the performances of the TVAs are similar, validating the new approach
机译:本文介绍了一种新的选择平移和旋转自由度的二自由度(dof)调谐减振器(TVA)参数的方法。动态刚度方法用于对设备建模,该设备被约束为沿平移方向移动并旋转。参数的选择涉及类似于Den Hartog在优化单个自由度TVA中提出的过程,其中TVA的频率响应函数和主体结构的不变(固定)点用于确定刚度给定质量的TVA。在本文中,该方法被扩展并应用于2dof TVA的设计,并且使用数值程序来确定最佳阻尼量。该方法简单易实现。给出了一个数值示例,以比较使用此处介绍的方法设计的2dof TVA与最佳2dof TVA的性能。结果表明,TVA的性能相似,验证了新方法

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