磁流变阻尼器示功特性畸变机理及物理解耦型新器件基础研究

项目名称： 磁流变阻尼器示功特性畸变机理及物理解耦型新器件基础研究

项目编号： No.51205426

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 机械工程学科

项目作者： 张红辉

作者单位： 重庆大学

项目金额： 25万元

中文摘要： 全面高性能磁流变阻尼器是获得可控阻尼半主动控制良好效果的保证，除可控阻尼大小、快速响应等能力特性外，饱满圆润的示功特性也是磁流变阻尼器的重要特性之一。 本项目针对大激励电流、大行程、大激振频率条件下多发的磁流变阻尼器示功特性畸变，在阻尼通道阻塞效应、磁流变液可压缩性研究和工艺优化的基础上，深入探讨示功畸变的产生原因并据此提出新型解耦补偿原理。 基于阻尼、刚度物理解耦补偿新器件，开展结构和磁学耦合条件下的阻尼间隙优化和面向动态响应特性的电磁负载优化研究；综合参数化模型与流变学建模成果，开展参数融合非稳态一体化建模，研究磁流变液成链动力学及动态响应微观模型，在纯阻尼特性下开展试验验证研究；在不同充气条件下，开展可控阻尼和非线性刚度特性综合试验测试，为可调车高、可控车姿等应用奠定基础；实现锁止阀结构的锁止与排空双重功能设计，探索器件锁止特性对武器平台稳定性控制的应用前景。

中文关键词： 磁流变阻尼器；物理解耦；畸变；设计理论；试验研究

英文摘要： The completed high quality Magnetorheological(MR) damper is the insurance of good semi-active control on controllable damping, not only the force scale and quick response, the smooth and full indicator diagram is also the important characteristics of MR damper. Aimed at the MR damper distortions which mostly occur in high current, large stroke and high frequency, and based on the experimental research of damping gap block effect and compressibility of MR fluid, this program investigates the reasons for distortion happening and explores the solutions, and the new-type physically decoupled volume compensation scheme is proposed. Based on the new device with damping and stiffness decoupled compensation, the optimizations are carried out on the damping gap and electromagnetic load under the coupling of structural and magnetic design; Combining the results of parametric modeling and rheological modeling, the unified parameters fusion unsteady flow modeling is developed, the chaining dynamics with response simulation is proposed, and, the experimental validation is carried out under the pure damping mode of proposed MR damper; under different charging pressure, the MR damper is tested to obtain the controllable damping and nonlinear stiffness characteristics; Lastly, the dual functions design of locking valve with loc

英文关键词： Magnetorheological damper；Physically decoupled；Distortion；Design theory；Experimental investigation