Vibration characteristics of composite reinforced cylindrical shells sandwiched with co-cured damping films

ZHOU Yuesong; SUN Xingshuai; LIANG Sen; KONG Jiali; ZHENG Minghui; ZHENG Changsheng

doi:10.16579/j.issn.1001.9669.2025.05.004

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Vibration characteristics of composite reinforced cylindrical shells sandwiched with co-cured damping films

·Vibration·Noise·Monitoring·Diagnosis· | 更新时间：2025-05-19

- Vibration characteristics of composite reinforced cylindrical shells sandwiched with co-cured damping films
- Journal of Mechanical Strength Vol. 47, Issue 5, Pages: 29-37(2025)
- 作者机构：
  
  1.山东华宇工学院机械工程学院，德州 253000
  2.青岛理工大学机械与汽车工程学院，青岛 266520
  3.潍坊科技学院智能制造学院，潍坊 262700
- 作者简介：
  
  ZHENG Changsheng, E-mail: zcs155894@126.com
- 基金信息：
  
  National Natural Science Foundation of China(52075280);Natural Science Foundation of Shandong Province(ZR2023QE115);Intelligent Manufacturing Engineering Laboratory-Shandong Higher Education Characteristic Labordatory
- DOI：10.16579/j.issn.1001.9669.2025.05.004
  CLC： TB332
- Received：17 October 2024，
  
  Revised：26 November 2024，
  
  Published：15 May 2025
- 稿件说明：
移动端阅览
周越松，孙兴帅，梁森，等. 共固化阻尼膜夹嵌复合材料加筋圆柱壳的振动特性［J］. 机械强度，2025，47（5）：29-37.

ZHOU Yuesong，SUN Xingshuai，LIANG Sen，et al. Vibration characteristics of composite reinforced cylindrical shells sandwiched with co-cured damping films［J］. Journal of Mechanical Strength，2025，47（5）：29-37.
周越松，孙兴帅，梁森，等. 共固化阻尼膜夹嵌复合材料加筋圆柱壳的振动特性［J］. 机械强度，2025，47（5）：29-37. DOI： 10.16579/j.issn.1001.9669.2025.05.004.

ZHOU Yuesong，SUN Xingshuai，LIANG Sen，et al. Vibration characteristics of composite reinforced cylindrical shells sandwiched with co-cured damping films［J］. Journal of Mechanical Strength，2025，47（5）：29-37. DOI： 10.16579/j.issn.1001.9669.2025.05.004.

摘要

为研究共固化阻尼膜夹嵌复合材料加筋圆柱壳在固支边界下的动力学性能，制备了共固化阻尼膜夹嵌复合材料加筋圆柱壳试件，搭建了动力学模态试验平台，求解了加筋圆柱壳试件的基频、阻尼比和模态振型，并验证了有限元模型的准确性，进一步通过数值模拟方法探讨了几何参数对结构振动特性的影响。结果表明，加强筋高度变化，结构的基频、阻尼比和模态振型会发生突变，且在突变前存在合适的高度值使整体结构同时兼顾阻尼和刚度需求；复合材料厚度一定时，随单层阻尼厚度或阻尼层数增加，整体结构基频逐渐减小，阻尼比逐渐增大；对于单层阻尼复合材料加筋圆柱壳，阻尼层越接近内蒙皮，其刚度越高，反之阻尼能力越好。

Abstract

In order to study the dynamic behavior of stiffened cylindrical shells with composite material sandwiched by co-cured damping films under the clamped boundary condition

the specimens of stiffened cylindrical shell with composite material sandwiched by co-cured damping films were prepared

and the dynamic modal test platform was set up. The fundamental frequency

damping ratio and modal shapes of stiffened cylindrical shell specimens were solved

and the accuracy of finite element model was verified. The influence of geometric parameters on structural vibration characteristics was further discussed by the numerical simulation method. The results show that

the fundamental frequency

damping ratio and modal shape of the structure will change abruptly when the height of stiffeners changes

and there is a suitable height value before the abrupt change to make the whole structure consider both damping and stiffness requirements; when the thickness of composite materials is constant

the fundamental frequency of the whole structure decreases gradually and the damping ratio increases gradually with the increase of the damping thickness or damping layer number of single layer; for the stiffened cylindrical shell of single layer damping composite materials

the closer the damping layer is to the inner skin

the higher the stiffness is

and vice versa

the damping capacity is better.

关键词

Keywords

references

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