顶帽截面薄壁复合材料结构稳定性研究

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-06-25 DOI:10.2478/ama-2023-0036

Błażej Czajka

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引用次数: 0

摘要

摘要本文对开截面压缩薄壁组合柱进行了研究。顶帽截面试件采用CFRP材料制作。对比了[0/-45/45/90]s和[90/0/90/0]s两种复合层的排列方式。本文重点研究了结构的屈曲现象和临界荷载的确定。它包括使用有限元法(FEM)的数值分析和使用高压灭菌技术制作的实际样品的验证。对两种方法所得结果进行了比较。采用p - war3近似法确定了实际试件的临界力。屈曲形状的评估和临界力的值在实验和数值测试中都显示出显著的相关性。本文还对测试的铺层进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Investigations Into the Stability of Thin-Walled Composite Structures with Top-Hat Cross-Sections

Abstract This paper presents a study of compressed thin-walled composite columns with an open cross-section. The tested specimens with a top-hat cross-section were made of CFRP material. Two arrangements of composite layers [0/-45/45/90]s and [90/0/90/0]s were compared. The paper focuses on the buckling phenomenon and the determination of the critical loads of the structure. It includes both numerical analyses using the finite element method (FEM) and validation on real specimens made using the autoclave technique. A comparison is made between the results obtained by both methods. The critical forces of the real specimens were determined using the P-wc3 approximation method. Both the evaluation of the buckling shape and the values of the critical forces showed a significant correlation between the experimental and numerical tests. This paper also compares the tested lay-ups.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.