通过分层建模,对可变刚度复合板的FEM自由振动分析
Gaetano Giunta1, Domenico Andrea Iannotta1,2, Marco Montemurro3
1Luxembourg Institute of Science and Technology, 5 Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg.
Materials (Basel, Switzerland)
|July 14, 2023
概括
这项研究增强了使用Carrera使用曲线纤维的可变角度拉 (VAT) 层材的分析.
科学领域:
- 复合材料科学 复合材料科学
- 机械工程 机械工程
- 计算力学 计算力学 计算力学
背景情况:
- 可变角拉 (VAT) 层材比传统复合材料提供了先进的设计和性能.
- 分析增值税结构是复杂的,因为额外的设计变量.
- 卡雷拉的统一配方 (CUF) 已建立用于增值税牌分析 (曲,振动,应力).
研究的目的:
- 扩展CUF 2D板有限元素家族,用于对带有曲线纤维的复合层板进行自由振动分析.
- 在CUF有限元框架内应用Reissner的混合变量定理 (RMVT).
主要方法:
- 开发了2D CUF板有限元素,结合曲线纤维路径.
- 使用虚拟位移原理 (PVD) 和RMVT作为变量语句.
- 将开发的模型与Abaqus 3D模拟,古典理论和现有文献进行了比较.
主要成果:
- 该研究成功地扩展了2D CUF有限元素以分析具有曲线纤维的增值税板.
- 单层和多层增值税牌的自由振动分析使用PVD和RMVT进行.
- 与参考解决方案相比,提出的混合理论显示出更高的近似精度.
结论:
- 将RMVT集成到CUF有限元素中,为分析具有复杂光纤路径的增值税板提供了一种有效的方法.
- 混合理论为预测曲线纤维复合结构的动态行为提供了更准确的方法.
- 这项研究推进了用于设计和分析下一代复合材料的可用的计算工具.
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