Dynamic analysis and design of passive reluctance force dampers for non-contact vibration mitigation.

本课题的目的是研究磁阻力阻尼器的非线性动力学，以减少机械结构的振动。磁阻阻尼器连接到电网，可以用来影响阻尼性能。在电阻和谐振电路的初步研究中已经分析了非线性总体响应。根据目前所获得的知识，我们为这个项目制定了以下目标。1. 研究了磁阻力阻尼器在多谐振电路中的响应，可与压电和洛伦兹力传感器相媲美，用于多种振动模式的阻尼。2. 为了提高计算效率，建立了基于静态有限元分析的磁路集总单元模型。3. 系统方程的线性化是为了提供一个关系的分析视图，以便估计预期的阻尼行为。4. 在单自由度和多自由度振动系统上，对不同电路的无源磁阻力阻尼器的非线性系统行为进行了数值分析。

The aim of this project is to investigate the nonlinear dynamics of reluctance force dampers for the vibration reduction of mechanical structures. The reluctance damper is connected to electrical networks, which can be used to influence the damping behavior. The challenge is the nonlinear overall response, which has already been analyzed in preliminary studies for resistive and resonant circuits. Based on the knowledge gained so far, the following objectives were formulated for this project. 1. The response of the reluctance force damper is to be investigated for multi-resonant circuits, comparable to piezoelectric and Lorentz force transducers, for the damping of multiple vibration modes. 2. A lumped-elements model of the magnetic circuit based on static finite-element analyses is to be developed for efficient computing. 3. Linearization of the system equations is to provide an analytical view of the relationships in order to estimate the expected damping behavior. 4. The nonlinear system behavior of passive reluctance force dampers with different circuits is to be analyzed numerically on single- and multiple-degree-of-freedom vibrational systems.