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首页> 外文会议>World conference on timber engineering;WCTE 2012 >EXPERIMENTAL STUDY ON MATERIAL DAMPING IN TIMBER BEAMS
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EXPERIMENTAL STUDY ON MATERIAL DAMPING IN TIMBER BEAMS

机译：木梁材料阻尼的实验研究

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With the development of new composite floor layouts and increased spans, understanding damping mechanisms of floor vibrations has now become an important field of interest. In this study, timber beams were subjected to flexural vibrations by using the impact test method. Experimental modal analysis was used to process the damping ratio out of the frequency response function measurements. Measurements were performed on 11 solid wood beams and 11 glulam beams, both made out of Norway Spruce, whose sections were representative of common timber floor structures. General trends showed increasing damping ratio for higher modes, shorter spans, and edgewise orientations. It was finally concluded that the damping ratio was governed by the shear deformation related to each specific mode shape.
机译：随着新的复合地板布局的发展和跨度的增加，了解地板振动的阻尼机制已成为人们关注的重要领域。在这项研究中，木梁通过使用冲击试验方法受到弯曲振动。实验模态分析用于处理频率响应函数测量结果中的阻尼比。在11根实木梁和11根胶合木梁上进行了测量，这两根梁都是由挪威云杉制成的，它们的截面代表了常见的木地板结构。总体趋势表明，对于较高的模态，较短的跨度和沿边的方向，阻尼比会增加。最终得出结论，阻尼比受与每个特定模式形状有关的剪切变形的支配。

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