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磁电弹结构多场耦合分析的 稳定Node-based光滑径向基点插值法
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Stabilized Node-based Smoothed Radial Point Interpolation Method for Multi-field Coupling Analysis of Magneto-electro-elastic Structures
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    摘要:

    为提高磁电弹结构分析的精度,提出稳定Node-based光滑径向基点插值法(SNS-RPIM). 基于传统Node-based光滑径向基点插值法(NS-RPIM),引入与场变量梯度方差有关的稳定项,消除不确定参数,推导了多场耦合问题的SNS-RPIM方程,求解了磁电弹结构静力响应问题,并与有限元法计算结果进行比较. 数值算例结果表明,SNS-RPIM能够得到更加接近真实解的结果,有效解决了有限元系统刚度偏硬的问题;在精度与收敛性方面,SNS-RPIM比有限元法表现得更加出色,从而为磁电弹材料的进一步应用提供了有效的分析方法.

    Abstract:

    In order to improve the accuracy in analyzing magneto-electro-elastic (MEE) structures, a stabilized node-based smoothed radial point interpolation method (SNS-RPIM) was proposed. Based on the traditional node-based smoothed radial point interpolation method, the stable item related to the gradient variance of the field variables was introduced to eliminate the uncertain parameter. The SNS-RPIM equations for multi-field coupling problems were derived, and the static responses of MEE structures were also solved. The results of SNS-RPIM were compared with those of finite element method. Numerical examples showed that SNS-RPIM can provide the result closer to the real solution and effectively solve the problem of 'overly-stiff' of finite element method. SNS-RPIM is better than FEM in terms of accuracy and convergence, which provides an effective analysis method for further application of MEE materials.

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任书慧,孟广伟,王吉贤,周立明?覮.磁电弹结构多场耦合分析的 稳定Node-based光滑径向基点插值法[J].湖南大学学报:自然科学版,2020,47(10):92~99

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  • 在线发布日期: 2020-10-26
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