倾斜的曲裂纹复合梁:用回收复合材料进行实验和计算分析,并与人工神经网络进行比较
Ashok Ravichandran1, Prases K Mohanty1, Abdullah Naser M Asiri2
1Department of Mechanical Engineering, National Institute of Technology, Jote, Arunachal Pradesh 791113, India.
ACS omega
|February 5, 2024
概括
这项研究模型倾斜回收复合体梁的曲裂. 计算和实验方法确定了自然频率,这表明复合结构的结构健康监测系统.
科学领域:
- 复合材料科学 复合材料科学
- 结构工程 结构工程
- 机械振动 - 机械振动
背景情况:
- 回收的复合材料提供可持续的结构解决方案.
- 了解复合体梁的裂纹行为对于结构完整性至关重要.
- 自由振动分析是评估结构健康的关键.
研究的目的:
- 开发和验证一个计算模型,用于回收复合体梁中倾斜的曲线裂.
- 调查裂深度和位置对自然频率和模式形状的影响.
- 提出基于模式参数变化的结构性健康监测方法.
主要方法:
- 使用微分方程 (DQM) 的计算分析.
- 破裂复合体梁的实验性自由振动测试.
- 用实验数据和人工神经网络 (ANN) 验证计算结果.
主要成果:
- 精确确定自然频率和模式形状的裂纹光束的前四种模式.
- 裂深度/位置与模式参数变化之间的相关性.
- 与实验结果和ANN结果对DQM方法的成功验证.
结论:
- DQM对于分析破裂复合体梁是有效的.
- 模态参数的变化可靠地表明结构的恶化.
- 提出的方法可以成为先进结构健康监测系统的基础.
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