层合复合材料和功能梯度多孔梁屈曲和自由振动响应的高阶梁新理论

IF 1.4 4区工程技术 Q3 ENGINEERING, MECHANICAL

Journal of Strain Analysis for Engineering Design Pub Date : 2023-08-05 DOI:10.1177/03093247231187454

Ngoc-Duong Nguyen

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引用次数: 0

摘要

本研究提出了一种新的高阶剪切变形理论，用于评估层压复合材料和功能梯度多孔梁的屈曲和自由振动特性。提出的理论框架有效地考虑了三个变量，消除了剪切修正因子的需要。控制方程由拉格朗日原理推导而来，而勒让德-里兹函数被用来解决由此产生的问题。分析了各种类型的任意层合组合梁和对称或非对称结构的功能梯度多孔梁。为了验证所提出理论的准确性和有效性，进行了几个数值算例，并与现有研究的结果进行了比较。

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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A new higher-order beam theory for buckling and free vibration responses of laminated composite and functionally graded porous beams

The present study introduces a novel higher-order shear deformation theory for assessing buckling and free vibration characteristics in laminated composite and functionally graded porous beams. The proposed theoretical framework effectively considers three variables and eliminates the need for a shear correction factor. The governing equations are derived from the Lagrange principle, while Legendre-Ritz functions are utilised to solve the resulting problem. Various types of laminated composite beams with arbitrary lay-ups and functionally graded porous beams with symmetric or unsymmetric configurations are analysed. To validate the accuracy and efficiency of the proposed theory, several numerical examples are conducted and compared against the results of existing research endeavours.

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来源期刊

Journal of Strain Analysis for Engineering Design 工程技术-材料科学：表征与测试

CiteScore

3.50

自引率

6.20%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Strain Analysis for Engineering Design provides a forum for work relating to the measurement and analysis of strain that is appropriate to engineering design and practice. "Since launching in 1965, The Journal of Strain Analysis has been a collegiate effort, dedicated to providing exemplary service to our authors. We welcome contributions related to analytical, experimental, and numerical techniques for the analysis and/or measurement of stress and/or strain, or studies of relevant material properties and failure modes. Our international Editorial Board contains experts in all of these fields and is keen to encourage papers on novel techniques and innovative applications." Professor Eann Patterson - University of Liverpool, UK This journal is a member of the Committee on Publication Ethics (COPE).