Electromagnetic and mechanical coupled deformation and evaluation parameter of magnetic damping for fusion reactor first wall

聚变反应堆第一壁电磁机械耦合变形及磁阻尼评估参数

• 批准号: 07680542
• 负责人: HORIE Tomoyoshi
• 金额: $ 1.28万
• 依托单位: Kyushu Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07680542/
• 关键词: magnetic damping; electromagnetic-mechanical; coupled problem; fusion reactor; first wall; finite element method; coupling intensity parameter; coupled vibration

Analyzes and experiments on electromagnetic and structural coupled vibration phenomenon or magnetic damping effect are described. The purpose of this study are : (1) To investigate the relation between the magnetic damping effect and the intensity and direction of magnetic field for the mechanical vibration in electromagnetic field ; (2) To determine the parameter of magnetic damping effect by analyzing the change of eigenvalue of the coupled system using finite element method ; (3) To investigate the dependence of the parameter on stiffness, thickness, density and the magnetic field intensity ; (4) To establish the evaluation method of the magnetic damping effect of the fusion reactor first wall.The results obtained in this study are as follows.1.Electromagnetic and mechanical coupled experimentVibration tests of thin conducting plates were performed in steady magnetic field. The change of natural frequency and the damping rate caused by the coupled effect was measured by use of laser … More deflection sensor and dynamic strain amplifier. The relations between the intensity of magnetic damping and parameters such as Young's modulus, thickness and magnetic field intensity can not be described by an exponential function because of the influence of inductance effect.2.Consideration on coupling parameterFinite element analysis and theoretical consideration were performed for the change of eigenvalue, the damping rate, and the change of natural frequency in the magnetic field. The dependence of parameters were clarified.3.Coupling intensity parameter for the magnetic damping effectThe coupling intensity parameter is proposed as a parameter of magnetic damping effect based on the experimental and numerical results. It is confirmed that the magnetic damping effect is described uniquely using this parameter.Further investigation is needed for the experiment and analysis of complicated configurations similar to real first wall structures and for preparation for first waall structural design criteria considering the magnetic damping effect. Less

对电磁与结构耦合振动现象或磁阻尼效应进行了分析和实验。本研究的目的是：(1)研究电磁场中机械振动的磁阻尼效应与磁场强度和方向的关系；(2)采用有限元法分析耦合系统特征值的变化，确定磁阻尼效应的参数；(3)研究了参数与刚度、厚度、密度和磁场强度的关系；(4)建立了核聚变反应堆第一壁磁阻尼效应的评价方法。本研究得到的结果如下：1。在稳定磁场条件下，对导电薄板进行了电磁与机械耦合振动试验。利用激光偏转传感器和动态应变放大器测量了耦合效应引起的固有频率和阻尼率的变化。由于电感效应的影响，磁阻尼强度与杨氏模量、厚度和磁场强度等参数之间的关系不能用指数函数来描述。耦合参数的考虑对磁场中特征值、阻尼率和固有频率的变化进行了有限元分析和理论考虑。阐明了参数的相关性。磁阻尼效应的耦合强度参数根据实验和数值结果，提出了耦合强度参数作为磁阻尼效应的一个参数。验证了用该参数可以唯一地描述磁阻尼效应。需要对类似于实际第一壁结构的复杂构型进行实验和分析，并为考虑磁阻尼效应的第一壁结构设计准则的制定做进一步的研究。少

项目成果

T.Horie: "Coupling Intensity Parameter and its Dependence for Magnetic Damping Problem" JSAEM Studies in Applied Electromagnetics. 4. 61-68 (1996)

T.Horie：“耦合强度参数及其对磁阻尼问题的依赖性”应用电磁学中的 JSAEM 研究。

堀江知義: "連成固有値に基づく平板たわみ問題の磁気減衰挙動評価" 日本AEM学会誌. 4. 40-45 (1996)

Tomoyoshi Horie：“基于耦合特征值的平板偏转问题中的磁阻尼行为评估”日本 AEM 学会杂志，4. 40-45 (1996)。

堀江知義: "連成固有値に基づく平板たわみ問題の磁気減衰挙動評価" 日本AEM学会誌. 4. (1996)

Tomoyoshi Horie：“基于耦合特征值的平板偏转问题中的磁阻尼行为评估”日本 AEM 学会杂志 4。（1996 年）。

堀江知義: "磁気減衰振動問題における連成モード合成法" 日本機械学会論文集C編. (印刷中).

Tomoyoshi Horie：“磁阻尼振动问题的耦合模式综合方法”，日本机械工程师学会会刊，C 版（正在出版）。

T.Horie: "Analysis of Magnetic Damping Problem by the Coupled Mode Superposition Method (in Japanese)" Journal of the Japan Society of Mechanical Engineers. (in press).

T.Horie：“通过耦合模态叠加法分析磁阻尼问题（日文）”日本机械工程学会杂志。