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Effect of surface on the flexomagnetic response of ferroic composite nanostructures; nonlinear bending analysis

机译：表面对铁纺织纳米结构柔性磁响应的影响; 非线性弯曲分析

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摘要

Our analysis incorporates the geometrically nonlinear bending of the Euler-Bernoulli ferromagnetic nanobeam accounting for a size-dependent model through assuming surface effects. In the framework of the flexomagnetic phenomenon, the large deflections are investigated referring to von-Karman nonlinearity. Employing the nonlocal effects of stress coupled to the gradient of strain generates a scale-dependent Hookean stress-strain scheme related to the small scale. Taking into account the supports of the nanobeam in two cases, that is, totally fixed and hinged, the deformations are predicted. A constant static lateral load is postulated uniformly along the length of the beam, which forces the deformation. As the analysis is based on the onedimensional media, the electrodes are embedded so that they give off a transverse magnetic field creating a longitudinal force. The newly developed mathematical model is computed by means of the differential quadrature method together with the Newton-Raphson technique. The computational section discusses and reveals the numerical results in detail for the characteristics and parameters involved in the design of beam-like magnetic nanosensors. As shown later, the conducted research presents that there is a strong linkage between the surface effect and the flexomagneticity behavior of the bulk.
机译：我们的分析通过假设表面效应包括欧拉-Bernoulli铁磁纳米阵列的几何非线性弯曲，用于尺寸依赖性模型。在柔性磁性现象的框架中，研究了von -karman非线性的大偏转。采用耦合到应变梯度的应力的非局部效应产生与小规模相关的尺度依赖的卷起应力方案。考虑到纳米米的支撑在两种情况下，即完全固定和铰接，预测变形。恒定静态载荷沿着梁的长度均匀地假设，这迫使变形。随着分析基于对励磁介质，嵌入电极，使得它们放出横向磁场产生纵向力。新开发的数学模型通过差分正交方法与牛顿-Raphson技术一起计算。计算部分讨论并揭示了梁状磁性纳米调位器设计中所涉及的特性和参数的数值结果。如后面所示，所进行的研究表明，表面效应与散装的柔性磁性行为之间存在强烈的连锁。

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  • 来源
    《Composite Structures》 |2021年第9期|114179.1-114179.10|共10页
  • 作者

    Malikan Mohammad; Eremeyev Victor A.;

  • 作者单位

    Gdansk Univ Technol Dept Mech Mat & Struct PL-80233 Gdansk Poland;

    Gdansk Univ Technol Dept Mech Mat & Struct PL-80233 Gdansk Poland|Don State Tech Univ Res & Educ Ctr Mat Gagarina Sq 1 Rostov Na Donu 344000 Russia|Univ Cagliari DICAAR Via Marengo 2 I-09123 Cagliari Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Spherical tokamak; Magnet; Coil; Solenoid; Power supply; Supercapacitor;

    机译：球形Tokamak;磁铁;线圈;电磁阀;电源;超级电容器;

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