Research of Dynamic Buckling of FG-GPLRC Arch Under Rectangular Pulse Loading

IF 1.7 4区工程技术 Q3 ENGINEERING, CIVIL

Iranian Journal of Science and Technology, Transactions of Civil Engineering Pub Date : 2024-07-31 DOI:10.1007/s40996-024-01567-7

Qian Hu, Yonghui Huang, Xinling Li, Bijing Chen

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Abstract

The dynamic mechanical response of functional gradient graphene nanoplatelets reinforced composite arches (GPLs) under the influence of rectangular pulse loading has been studied by employing finite element analysis (FEA). By comparing the static buckling behavior of arches with the peak of the dynamic displacement response, a new method to determine the critical dynamic buckling load and load holding time was established. The specific effects of the distribution pattern, shape and size, mass fraction, and load holding time of GPLs on the dynamic response performance of arches were deeply investigated through a parametric study. It is found that even a small amount of GPLs addition can significantly elevate the dynamic buckling load carrying capacity of arches, and the X-shaped GPLs distribution pattern is the most effective way to enhance the dynamic stability performance of arches. With other parameters being constant, a larger surface area and thinner GPL can improve the performance of the material more significantly.

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矩形脉冲载荷下 FG-GPLRC 拱体的动态屈曲研究

通过采用有限元分析（FEA），研究了功能梯度石墨烯纳米片增强复合材料拱（GPL）在矩形脉冲载荷影响下的动态力学响应。通过比较拱的静态屈曲行为和动态位移响应峰值，建立了一种确定临界动态屈曲载荷和载荷保持时间的新方法。通过参数研究，深入探讨了 GPL 的分布模式、形状和尺寸、质量分数和荷载保持时间对拱桥动态响应性能的具体影响。研究发现，即使添加少量的 GPLs 也能显著提高拱桥的动屈曲承载能力，而 X 形 GPLs 分布模式是提高拱桥动态稳定性能的最有效方法。在其他参数不变的情况下，更大的表面积和更薄的 GPL 可以更明显地改善材料的性能。

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来源期刊

Iranian Journal of Science and Technology, Transactions of Civil Engineering ENGINEERING, CIVIL-

CiteScore

3.30

自引率

11.80%

发文量

203

期刊介绍： The aim of the Iranian Journal of Science and Technology is to foster the growth of scientific research among Iranian engineers and scientists and to provide a medium by means of which the fruits of these researches may be brought to the attention of the world’s civil Engineering communities. This transaction focuses on all aspects of Civil Engineering and will accept the original research contributions (previously unpublished) from all areas of established engineering disciplines. The papers may be theoretical, experimental or both. The journal publishes original papers within the broad field of civil engineering which include, but are not limited to, the following: -Structural engineering- Earthquake engineering- Concrete engineering- Construction management- Steel structures- Engineering mechanics- Water resources engineering- Hydraulic engineering- Hydraulic structures- Environmental engineering- Soil mechanics- Foundation engineering- Geotechnical engineering- Transportation engineering- Surveying and geomatics.