| 粘弹性约束阻尼层结构的动力学性能研究 |
| Study on Dynamic Performance of Viscoelastic Constrained Damping Layer Structures |
| 投稿时间：2022-07-06 修订日期：2022-07-06 |
| DOI：10.12136/j.issn.1000-890X.2023.07.0490 |
| 中文关键词: 约束阻尼层结构 粘弹性材料 振动衰减 损耗因子 动力学性能 |
| 英文关键词: constrained damping layer structure viscoelastic material vibration attenuation loss factor dynamic performance |
| 基金项目:中国飞机强度研究所自筹基金项目（BYST-LXCT-22-055） |
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| 中文摘要: |
| 研究粘弹性约束阻尼层结构（简称约束阻尼层结构）的动力学性能。结果表明：丁基橡胶可以较好地应用于约束阻尼层结构的阻尼层材料；约束阻尼层结构可以有效降低50～2 050 Hz范围内共振频率处的振动，同时共振频率向低频移动；随着阻尼层材料的损耗因子、储能模量和厚度的增大，约束阻尼层结构的结构损耗因子增大，振动衰减效果明显；约束阻尼层结构的振动衰减的仿真结果与试验结果一致。本研究可为约束阻尼层结构的设计和优化提供参考。 |
| 英文摘要: |
| The dynamic performance of the viscoelastic constrained damping layer structure（abbreviated as constrained damping layer structure） was studied.The results showed that butyl rubber could be well applied as the damping layer material of constrained damping layer structure.The constrained damping layer structure could effectively reduce the vibration at the resonant frequency within the range of 50～2 050 Hz，while moving the resonant frequency towards the low frequency.As the loss factor，storage modulus and thickness of the damping layer material increased，the structural loss factor of the constrained damping layer structure increased，and the vibration attenuation effect of the structure was significant.Moreover，the simulation results of the vibration attenuation of the constrained damping layer structure were consistent with the experimental results.This study could provide a reference for the design and optimization of the constrained damping layer structure. |
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