基于功率定律可变厚板的能量密度的构成模型及其应用
Miao-Xia Xie1, Qian-Lang Huang2, Peng Zhang2
1School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Caosi East Road, Huyi District, Xi'an, 710055, China. Xiemiaoxia@xauat.edu.cn.
Scientific reports
|October 30, 2024
概括
一种新的精确能量有限元素方法 (NEFEM) 准确预测可变厚板的高频振动. 这种方法比近似方法更可靠,更节省时间,改善了航空航天和船舶的结构设计.
科学领域:
- 机械工程 机械工程
- 计算力学 计算力学 计算力学
- 结构动力学 结构动力学
背景情况:
- 变厚板在航空航天和船舶等大型运输系统中至关重要.
- 这些结构中的高频振动可能会造成重大损坏,需要准确的预测模型.
- 目前用于高频动态响应的近似方法 (AEFEM) 不准确且耗时.
研究的目的:
- 开发一种精确的新能源有限元素方法 (NEFEM),用于分析变厚板.
- 建立一个可靠和节省时间的构成模型,用于电力法变厚板.
- 验证NEFEM的准确性和效率与传统的FEM和AEFEM相比.
主要方法:
- 导出基于能量密度的新构成方程,用于变量厚板的功率定律.
- 为衍生的构成方程开发有限元离散方案.
- 实施新的精确能量有限元素方法 (NEFEM).
主要成果:
- 该NEFEM提供了可变厚板的动态反应的准确预测.
- 由此衍生的构成模型被证明是可靠和高效的.
- 与近似方法 (AEFEM) 相比,NEFEM使用更少的元素实现了更高的准确性.
结论:
- 开发的NEFEM提供了一种精确而有效的方法,用于预测功率法变厚板中的高频动态响应.
- 这种新方法通过提供可靠的振动分析来增强结构设计.
- 对于复杂的板结构,NEFEM比现有的近似方法有了显著的进步.
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