基于网架结构周期特性的改进设计及振动传递特性分析  

Analysis of Vibration Transmission Characteristics for an Improved Space Truss Structure Based on the Periodic Characteristics

作　　者：苟海朝 路国运[1] 杨会伟[1] GOU Haichao;LU Guoyun;YANG Huiwei(School of Civil Engineering,Taiyuan University of Technology,Taiyuan Shanxi,China)

机构地区：[1]太原理工大学土木工程学院,山西太原

出　　处：《太原理工大学学报》2025年第2期216-223,共8页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(12172244);山西省自然科学基金(201901D111089)。

摘　　要：【目的】针对网架结构的三维点阵周期性结构进行动力学特性研究,探索不同周期单元结构的设计与宏观整体特性间的内在联系。【方法】运用有限元法建立网架模型并通过计算其频响特性来评价其隔振性能,依据周期结构带隙原理设计了螺旋杆网架和双材料网架两种网架结构模型,并对两种网架结构模型的隔振效果进行计算与分析。【结果】研究结果表明:设计的两种网架结构和原始网架结构相比可以更好地有选择性地抑制高、低频振动。且文中基于网架结构周期特性中的带隙特性对网架进行隔振设计也可为该类结构健康监测与振动控制提供理论依据。【Purposes】In this paper,the dynamics of the three-dimensional periodic lattice cluster structure is analyzed to explore the internal relationship between the design of different periodic elements and the macroscopic global characteristics.【Methods】The finite element method was used to establish the space truss model and its vibration isolation performance was evaluated by calculating its frequency response characteristics.Two kinds of space truss structure model were designed according to the band gap principle of periodic structure,namely the spiral rod space truss structure and the double material space truss structure,and the vibration isolation effects of the models under different designs were calculated and analyzed.【Findings】The results show that compared with original space truss structure,the designed two kinds of structure can suppress the high frequency vibration.Moreover,the analyses of the band gap characteristics in the periodic characteristics of the space truss structure can also provide a theoretical basis for the health monitoring and vibration control of this kind of structure.

关 键 词：周期结构 网架结构 频响函数综合 有限元分析 振动传递 

分 类 号：TU391[建筑科学—结构工程]