分析粘合性结合复合物杆的振动响应
Jarosław Chełmecki1, Paweł Szeptyński2, Dorota Jasińska2
1Deformations and Vibrations of Structures Laboratory, Cracow University of Technology, 31-155 Kraków, Poland.
Materials (Basel, Switzerland)
|January 11, 2025
概括
这项研究分析了具有不同粘合层厚度的复合式支柱的振动. 实验结果与自身频率和阻尼的理论和数值预测有很好的一致性.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 结构动力学 结构动力学
背景情况:
- 复合梁越来越多地用于各种工程应用.
- 了解粘合结构的振动行为对于设计和安全至关重要.
- 粘合层厚度对复合材料悬臂动态的影响需要详细研究.
研究的目的:
- 为了研究具有不同粘合层厚度的粘合粘合复合材料悬臂的振动特性.
- 将实验结果与理论预测和数值模拟进行比较.
- 分析增加质量的对振动响应的影响.
主要方法:
- 使用扫描和冲击负载对驱动和自由振动进行实验分析.
- 通过富里埃分析和手动移位来确定自身频率.
- 使用对数递减来估计阻尼.
- 使用马方法和线性弹性复合束理论进行理论计算.
- 使用有限元法进行数值模态分析.
主要成果:
- 通过多种实验激发方法,精确确定了自身频率.
- 从实验数据中成功估计了阻尼特性.
- 实验结果与理论预测和有限元素分析相一致.
- 发现粘合剂层的厚度会影响振动行为.
结论:
- 这项研究成功地描述了粘合粘合复合材料支柱的振动响应.
- 使用的理论和数值方法为此类系统提供了可靠的预测.
- 这些发现有助于更好地了解复合体束动力学和粘合剂关节的行为.
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