Experimental investigations of a multi-span flexible structure subjected to moving masses
Experimental investigations of a multi-span flexible structure subjected to moving masses
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DOI：
10.1016/j.jsv.2010.11.011
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发表时间：
2011-04
影响因子：
4.7
通讯作者：
D. Stancioiu;H. Ouyang;J. Mottershead;S. James
中科院分区：
文献类型：
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作者：
D. Stancioiu;H. Ouyang;J. Mottershead;S. James
本文研究了多跨柔性结构在运动质量激励下的动力响应。建立了一个四跨简支梁，用激光位移传感器测量了一个或两个钢球以不同速度滚过梁时，沿结构沿着八个位置产生的挠度。移动质量的行进速度也通过激光传感器测量。建立了结构的动态（理论）模型，并对误差的变化进行了统计评估。数值计算结果与实验结果进行了比较，取得了良好的一致性。
This paper is concerned with the dynamic response of multi-span flexible structures excited by moving masses. A four-span beam on simple supports was built and the deflections at eight locations along the structure produced by one or two steel balls rolling over it at various speeds are measured by laser displacement transducers. The travelling speeds of the moving masses are also measured by laser sensors. A dynamic (theoretical) model of the structure is established and a statistical assessment of the error variability presented. The numerical results are compared with the experimental results and good agreement is achieved.