在正常压力下长薄的矩形板的行为 - - 彻底调查.
Gilad Hakim1, Haim Abramovich1
1Aerospace Structures Lab, Faculty of Aerospace Engineering, Technion-Israel Institute of Technology, I.I.T., Haifa 32000, Israel.
Materials (Basel, Switzerland)
|June 27, 2024
概括
这项研究表明,长长的薄板的末端显著影响它们的结构行为,即使在偏远的地方. 与假设相反,这些板块可以表现出比无限长的板块更大的斜率,挑战现有的工程模型.
科学领域:
- 结构力学 结构力学
- 机械工程 机械工程
- 航空航天工程 航空航天工程
- 土木工程 土木工程是指土木工程.
背景情况:
- 薄的矩形板在航空航天,土木和机械工程中是基本的.
- 在横向负荷下对同otropic 和复合板进行了广泛的研究,涵盖了小和大偏差.
- 长长的薄板具有高面积比的特定行为仍然未得到充分探索.
研究的目的:
- 为了研究长长的薄板的结构行为,特别是那些具有高面积比的板.
- 为弥补有关这些板在小和大曲率调节中的曲率特征的文献上的差距.
- 挑战长板可以被视为无限长的常见假设.
主要方法:
- 在横向正常负荷下对结构行为进行分析,用于小型和大型曲折.
- 考虑各种边界条件,包括全方位简单支和全方位紧.
- 长有限板块与理想无限长板块之间的曲率的比较.
主要成果:
- 结构终端效应在长长的薄板中持续存在,这与无限板的假设相反.
- 长板,在特定的移动边界条件下,在大偏移模式下,显示出比无限板更大的中宽位移.
- 这种增强的偏移现象在不同的边界条件和材料类型 (同位热和正位热) 中观察到小型和大型偏移.
结论:
- 将长盘视为无限的假设不是普遍有效的,需要仔细应用.
- 有限的尺寸比率可以导致比无限板理论预测的更大的中宽偏差.
- 这项研究为板状表现提供了新的工程视角,突出了尺寸比率和终端条件的重要性.
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