在非线性弹性基础上的功能分级的多层GPL增强复合体梁的热和后
Ying Lv1,2,3, Jing Zhang1,2,3, Lianhe Li1,2,3
1Mathematics Science College, Inner Mongolia Normal University, Hohhot, 010022, China.
Heliyon
|October 9, 2023
概括
这项研究调查了在弹性基础上的石墨烯血小板增强复合体梁的热曲和后曲行为. 研究结果揭示了轴力和基础特性如何影响热负荷下的结构稳定性.
科学领域:
- 复合材料工程 复合材料工程
- 结构力学 结构力学
- 纳米技术 纳米技术
背景情况:
- 功能分级材料 (FGMs) 通过通过厚度变化的组成提供调节性质.
- 石墨烯血小板 (GPLs) 增强复合材料的机械和热性能.
- 了解热曲对于温度变化下的结构完整性至关重要.
研究的目的:
- 分析多层石墨烯血小板增强复合材料 (GPLRC) 梁的热曲和后曲.
- 研究轴力和非线性弹性基础对这些梁的稳定性的影响.
- 为热曲和后曲行为提供分析表达式.
主要方法:
- 使用Halpin-Tsai模型计算GPLRC层的弹性模量.
- 使用一级剪切变形束理论和虚拟工作原理,推导出非线性控制方程.
- 采用微分方程法 (DQM) 来分析轴向力和基础的影响.
- 应用了两步扰动方法 (TSPM) 来导出分析表达式.
主要成果:
- 进行了详细的参数分析,以了解各种因素对热曲和后曲的影响.
- 调查的关键参数包括轴力,边界条件,细度比,GPL特征 (几何,重量分数,分布) 和弹性基础系数.
- 该研究量化了这些参数对稳定性极限和后反应的影响.
结论:
- 轴力和非线性弹性基础显著影响GPLRC梁的热曲和后曲.
- GPL的分布和特性在结构稳定中起着至关重要的作用.
- 开发的分析和数值方法为分析这种复杂的复合结构提供了强大的框架.
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