模拟多层玻璃面料三明治板的动态性能
Arkadiusz Charuk1,2, Izabela Irska1, Paweł Dunaj1
1Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology in Szczecin, al. Piastów 19, 70-310 Szczecin, Poland.
Polymers
|November 9, 2024
概括
这项研究开发了一个有限元模型来预测玻璃织物烯酸树脂三明治板的动态特性. 经过验证的模型准确地预测了面板和结构的自然频率,这对于轻量级设计至关重要.
科学领域:
- 材料科学与工程 材料科学与工程
- 机械工程 机械工程
- 结构动力学 结构动力学
背景情况:
- 三明治板在轻质结构中至关重要,但易受时间变化的负载引起的振动,影响功能.
- 在设计阶段准确预测动态特性对于结构完整性和性能至关重要.
- 了解振动特性是减轻结构应用中的不利影响的关键.
研究的目的:
- 提出一个有限元模型来预测玻璃织物/树脂三明治板的动态特性.
- 通过实验性比较自然频率和频率响应函数来验证模型.
- 评估模型在预测由这些面板组成的内结构的动态行为的准确性.
主要方法:
- 使用二维四边形同参平面元素来表示面板结构细节的有限元素模型的开发.
- 实施基于实验确定的频率响应函数的模型更新程序.
- 从分析的三明治板构建的柜模型的实验验证.
主要成果:
- 与实验数据相比,数值模型在自然频率上实现了平均5.0%的相对误差.
- 更新后的模型在预测三明治板的动态特性方面表现出很好的准确性.
- 机柜模型在数值和实验自然频率之间显示了5.9%的平均相对误差.
结论:
- 有限元模型为预测树脂三明治板的动态特性提供了可靠的工具.
- 该模型的准确性足以用于设计阶段的分析,减少了对广泛物理原型设计的需求.
- 经过验证的动态分析对于优化使用三明治板的轻质结构的性能和可靠性至关重要.
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