非局部压电梁在磁场和热载荷作用下的后屈曲分析

IF 2.2 4区工程技术 Q2 ENGINEERING, CIVIL

Structural Engineering and Mechanics Pub Date : 2021-01-01 DOI:10.12989/SEM.2021.78.1.015

R. M. Fenjan, R. A. Ahmed, Nadhim M. Faleh

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引用次数: 4

摘要

本文研究了由智能材料压电磁性材料构成的纳米梁的非线性热屈曲行为。基于两种假设考虑了纳米光束的几何形状:理想的直光束和不完美的光束。为了考虑纳米尺度的冲击，根据非局部弹性理论提出了纳米尺度梁的计算公式。在基于经典梁理论和非局部弹性理论建立控制方程的基础上，利用伽辽金方法得到了非线性屈曲路径，并给出了解析趋势。详细研究了压电材料成分、电磁场和几何缺陷对屈曲路径的影响。

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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Post-buckling analysis of imperfect nonlocal piezoelectric beams under magnetic field and thermal loading

An investigation of the nonlinear thermal buckling behavior of a nano-sized beam constructed from intelligent materials called piezo-magnetic materials has been presented in this article. The nano-sized beam geometry has been considered based on two assumptions: an ideal straight beam and an imperfect beam. For incorporating nano-size impacts, the nano-sized beam formulation has been presented according to nonlocal elasticity. After establishing the governing equations based on classic beam theory and nonlocal elasticity, the nonlinear buckling path has been obtained via Galerkin's method together with an analytical trend. The dependency of buckling path to piezo-magnetic material composition, electro-magnetic fields and geometry imperfectness has been studied in detail.

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来源期刊

Structural Engineering and Mechanics 工程技术-工程：机械

CiteScore

3.80

自引率

18.20%

发文量

审稿时长

11 months

期刊介绍： The STRUCTURAL ENGINEERING AND MECHANICS, An International Journal, aims at: providing a major publication channel for structural engineering, wider distribution at more affordable subscription rates; faster reviewing and publication for manuscripts submitted; and a broad scope for wider participation. The main subject of the Journal is structural engineering concerned with aspects of mechanics. Areas covered by the Journal include: - Structural Mechanics - Design of Civil, Building and Mechanical Structures - Structural Optimization and Controls - Structural Safety and Reliability - New Structural Materials and Applications - Effects of Wind, Earthquake and Wave Loadings on Structures - Fluid-Structure and Soil-Structure Interactions - AI Application and Expert Systems in Structural Engineering. Submission of papers from practicing engineers is particularly encouraged.