摘要
各种载荷广泛存在于结构振动中,影响结构的振动特性。利用传递矩阵法,建立了轴向载荷周期结构梁弯曲振动特性理论模型,能够计算轴向载荷周期结构梁弯曲振动的能带结构和传输特性。研究表明,轴向载荷周期结构梁弯曲振动存在带隙,并分析了轴向载荷对带隙频率范围和衰减的影响。通过调节载荷条件,可以实现了超低频带隙特性。通过调节轴向载荷的大小和方向可以提高带隙的适应性。
Abstract
Axially loads existing in structure vibration influence the vibration properties. Using the transfer matrix method, the flexural vibration band gaps in axially loaded periodic composite beam are studied. The band structure and transmission coefficient are calculated. Flexural vibration band gaps can exist in the axially loaded periodic structure beam. And the load can influence the gap frequency ranges and attenuation. Also, we find the existence of the extra low frequency band gap with appropriate load. By tuning the amplitude and direction of the axially load, the adaptability of the band gap will be improved
关键词
周期结构 /
声子晶体 /
轴向载荷
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Key words
Periodic structure /
Phononic crystals /
axially load
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郁殿龙;温激鸿;陈圣兵;方剑宇;温熙森.
轴向载荷周期结构梁的弯曲振动带隙特性 [J]. 振动与冲击, 2010, 29(3): 85-88
Yu Dian-long;Wen Ji-hong;Chen Sheng-bing;Fang Jian-yu;Wen Xi-sen.
Flexural vibration band gaps in axially loaded periodic structure beam[J]. Journal of Vibration and Shock, 2010, 29(3): 85-88
中图分类号:
O321
TH113
O48
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