贴敷约束阻尼层的螺栓连接板半解析动力学建模及减振分析

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摘要在太空环境中太阳翼帆板的振动难以抑制，因此太阳翼帆板的减振研究至关重要。本文利用双搭接螺栓连接板结构模拟太阳翼帆板的展开状态，研究了通过贴敷约束阻尼层对其进行振动抑制的方法。创建了贴敷“H型”约束阻尼层双搭接螺栓连接板结构的半解析动力学模型，包含：利用层间剪切变形原理，推导了约束阻尼层结构的应力应变关系，用复模量表征粘弹性层的阻尼特性；考虑螺栓的影响区域，提出用复面弹簧单元和修正质量模拟双搭接螺栓结合部的刚度、阻尼和质量特性；引入正交多项式作为位移容许函数，利用拉格朗日方程和Hamilton原理建立了局部贴敷“H型”约束阻尼层的螺栓连接薄板的动力学方程。进行了实例研究，通过组建的试验系统证明了所创建的复合结构半解析模型在求解固有特性及振动响应参数方面的合理性，同时试验及半解析模型计算结果均证明约束阻尼层对双搭接螺栓连接板具有减振效果。最后，基于所创建的半解析模型分析了贴敷面积及约束阻尼层厚度对双搭接螺栓连接板减振效果的影响。

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	张荣飞1
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	孙伟1
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	骆海涛3
	张辉1
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关键词 ：约束阻尼层, 双搭接, 螺栓连接板, 半解析动力学建模, 减振分析

Abstract：It is difficult to suppress the vibration of the solar wing windsurfing in the space environment, so it is very significant to study the vibration reduction of the solar wing windsurfing. The double-lap bolted thin plates is used to simulate the unfolding state of the solar wing windsurfing, and the method of vibration suppression by attaching constrained layer damping (CLD) is studied. A semi-analytical dynamic model of the double-lap bolted thin plates with "H-type" CLD is established, including: the stress-strain relationship of CLD is derived by using the principle of interlaminar shear deformation, and the damping characteristics of the viscoelastic layer are characterized by complex modulus; considering the influence region of bolts, the stiffness, damping, and mass characteristics of the joint of the double-lap bolts are simulated by using compound spring element and modified mass; the orthogonal polynomial is introduced as the displacement admissible function, and the dynamic equations of bolted thin plates with "H-type" CLD is established by using Lagrange equation and Hamilton principle. An example study is carried out, and the experimental system is established to prove the rationality of the semi-analytical model of the composite structure in solving the natural characteristics and vibration response parameters. Moreover, the results of both the experiment and the semi-analytical model show that the “H-type” CLD has a vibration reduction effect on the double-lap bolted thin plates. Finally, based on the semi-analytical model of the model, the influence of the attaching area and the thickness of the CLD on the vibration reduction effect of the double-lap bolted thin plates is analyzed

Key words： CLD Double-lap joint Bolted plates Semi-analytical dynamic modeling Vibration reduction analysis

收稿日期: 2023-05-11 出版日期: 2024-03-15

引用本文:

张荣飞1,2，孙伟1,2，骆海涛3，张辉1,2. 贴敷约束阻尼层的螺栓连接板半解析动力学建模及减振分析[J]. 振动与冲击, 2024, 43(5): 315-327.
ZHANG Rongfei1,2,SUN Wei1,2,LUO Haitao3,ZHANG Hui1,2. Semi-analytical dynamic modeling and vibration reduction analysis of bolted connection plates with constrained layer damping attached. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(5): 315-327.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2024/V43/I5/315

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