计算效率高 - - 复合材料增强薄壁圆柱体外与周围裂的有限元素分析版本
1School of General Education, Yeungnam University, Gyeongsan 38541, Republic of Korea.
Materials (Basel, Switzerland)
|April 24, 2025
概括
这项研究引入了一种新的有限元模型,用于分析破裂的复合材料增强圆柱体外. 该模型有效地评估了复合贴片在防止裂传播方面的有效性,这对于结构完整性至关重要.
科学领域:
- 结构工程 结构工程
- 材料科学 材料科学 材料科学
- 计算力学 计算力学 计算力学
背景情况:
- 圆柱形外在航空航天和流体运输中至关重要,但在应力下容易发生裂.
- 周围裂损害了结构完整性,需要有效的修复策略.
- 复合贴片增强为缓解裂传播提供了一个有希望的解决方案.
研究的目的:
- 开发和验证一种新的有限元模型,用于分析带有周长裂的复合材料增强圆柱体外.
- 研究复合材料补丁在增强结构完整性和防止裂传播方面的有效性.
- 为分析这些结构提供一个计算效率高的方法.
主要方法:
- 一个有限元模型,在一个统一的单元网格中集成相当的单层 (ESL) 和层wise (LW) 理论.
- 使用p-精细化技术来提高模型准确性和降低计算成本.
- 使用虚拟裂关闭技术 (VCCT) 进行断裂分析和应力强度因子评估.
主要成果:
- 开发的模型准确地模拟了裂行为,并评估了复合材料补丁增强的有效性.
- 与传统的LW模型相比,可以实现自由度的显著降低.
- 参数研究揭示了补丁材料,厚度和粘合性能对强化效率的影响.
结论:
- 该研究提出了一种有效和高效的方法来分析具有裂的复合材料增强薄壁圆柱体外.
- 这些发现为航空航天,海洋和管道工程中的结构设计和维护提供了宝贵的见解.
- 综合ESL和LW方法为未来的结构完整性评估提供了一个强大的框架.
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