磁电弹性板的非线性组合共振

IF 4.4 2区 工程技术 Q1 MECHANICS
Lei-Lei Gan, Gui-Lin She
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引用次数: 0

摘要

现有关于磁电弹性(MEE)结构非线性共振的文章主要关注参数共振和主共振,忽略了参数激励和强迫激励之间的耦合效应。为了揭示这个问题,我们考虑了纵向和横向耦合激励,研究了 MEE 板的组合共振,其中考虑了简单支撑的两端。利用麦克斯韦方程和一阶剪切变形理论(FSDT)确定了磁场、电场和位移场的表达式。应用 Galerkin 方法推导出了非线性常微分方程。通过开发变幅法(MVA),解决了具有简单支撑端部的 MEE 板的组合共振问题。在后续分析中,通过幅频图描述了共振轨迹,观察到了具有跳跃、滞后和多稳解的复杂动力学现象。为揭示其动力学机理,还进行了包括电动势、磁势、激励、温度变化等因素在内的综合数值分析,并对分岔和混沌动力学行为进行了分析。结果表明,这些参数发挥了重要作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nonlinear combined resonance of magneto-electro-elastic plates
The existing articles on the nonlinear resonances of magneto-electro-elastic (MEE) structures are mainly devoted to the parametric resonance and primary resonance, neglecting the coupling effect between parametric and forced excitations. To reveal this issue, the coupled longitudinal and transverse excitations are considered to investigate the combined resonance of MEE plates, in which the simply supported ends is considered. The expressions of magnetic-, electric- and displacement-fields are determined using the Maxwell's equation and first order shear deformation theory (FSDT). Applying the Galerkin method, the nonlinear ordinary differential equations are derived. The combined resonance problem of MEE plates with simply supported ends is solved by developing the method of varying amplitude (MVA). And the resonance trajectory is depicted by amplitude-frequency diagram in the follow-up analysis, in which the complicated dynamical phenomena with jump, hysteresis and multi-stable solution can be observed. To reveal the dynamic mechanism, comprehensive numerical analyses including electric potential, magnetic potential, excitations, temperature variation and other factors are conducted, the bifurcation and chaotic dynamic behaviors are also analyzed. The results elucidate that these parameters under discussion play significant roles.
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来源期刊
CiteScore
7.00
自引率
7.30%
发文量
275
审稿时长
48 days
期刊介绍: The European Journal of Mechanics endash; A/Solids continues to publish articles in English in all areas of Solid Mechanics from the physical and mathematical basis to materials engineering, technological applications and methods of modern computational mechanics, both pure and applied research.
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