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

本计画的目的是研究机械结构之磁阻力阻尼器之非线性动力学特性。磁阻阻尼器连接到电网，其可用于影响阻尼行为。挑战在于非线性的整体响应，这已经在电阻和谐振电路的初步研究中进行了分析。根据迄今为止获得的知识，为该项目制定了以下目标。1.磁阻力阻尼器的响应是要调查的多谐振电路，压电和洛伦兹力传感器，多个振动模式的阻尼。2.基于静态有限元分析的磁路的集总元件模型将被开发用于有效的计算。3.系统方程的线性化是为了提供关系的分析视图，以便估计预期的阻尼行为。4.本文以单自由度和多自由度振动系统为对象，对不同回路的被动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.