磁流变液减振器中磁场强度的建模及有限元分析

机械设计制造及其自动化文档，文档编号:JX1147  文档字数:13122.页数:45

摘     要
 
 磁流变液减振器是根据磁流变液的流变特性而设计的一类减振装置，磁流变液减振器已经成为一种重要的新一代高性能、智能化减振装置。利用可控液体的流变效应来改变减振器的阻尼力实施控制的这种方式很有应用前景。其中相对于减振器阻尼力计算模型的成熟，该重要磁场强度的设计分析研究比较缺乏，应此本文重点分析磁场强度与其他因素（激励电流）的研究.本文在论述磁流变液减振器工作机理的基础上，采用一种数学建模方法建立了磁流变液减振器中磁场强度的数学模型，然后运用ANSYS 编写了相应程序对该磁场强度模型进行了有限元分析，将这两种方法得到的数据进行比较分析后，最终得到了磁场强度与磁流变液减振器主要设计参数和控制参数（激励电流）之间的简化数学模型，为有效的在磁流变液减振器中控制阻尼孔处磁场强度等后续工作打下基础。

关键词：磁流变液 减振器 数学建模 有限元分析

Abstract
 Magnetorheological fluid damper is a class of damping device ,which is based on magnetorheological fluid flow characteristics. Magnetorheological fluid shock absorber has become an important new generation of high-performance, intelligent damping device. Controlled use of the flow of liquid to change the shock absorber damping force control of the implementation of this approach is very application. Comparing with the maturity of damping force model, the lack of the studying of magnetic field strength. This thesis should focus on analysis of the magnetic field strength and other factors (the current incentives).This thesis is based on the mechanism of Magnetorheological Damper, a mathematical modeling method was introduced to set up a magnetic density model in the MR Damper. Related ANSYS programs were developed to carry out the Finite Element Analysis of the model. The results which obtained by above two ways were analyzed, a simplified model of magnetic density was obtained, which presents the relationship between the magnetic field and the main design & control factors(the current excitation ). These results are useful for the continuous work, for instance, the control of the magnetic field of the aperture.

Keywords：magnetorheological fluid; damper; mathematical modeling; finite element analysis
目  录
中文摘要 ⅰ
英文摘要 ⅱ
目录 ⅲ
第一章     绪论 1
 1.1  研究动机与目的 1
 1.2  研究背景 2
 1.3  研究方法与系统描述 3
 1.4  文档內容概述 3
第二章     磁流变液减振器 4
 2.1  磁流变液减振器简介 4
2.2  磁流变液的工作原理 5
第三章     磁场强度的理论分析 7
 3.1   磁路的分析方法 7
 3.2  磁流变液减振器数学模型的建立 9
第四章     磁场强度的有限元分析 13
 4.1   有限元方法和ANSYS软件简介 13
 4.2   减振器磁场分析简化说明 14
 4.3  减振器中磁场强度ANSYS分析 15
 4.3.1   创建物理环境 15
 4.3.2   建立模型 16
 4.3.3   加边界条件和载荷 19
 4.3.4   求解 19
 4.3.5   查看计算结果 20
第五章     解析与数值计算结果对比及误差分析 23
 5.1   解析解与数值解对比 23
 5.2   解析与数值计算误差分析  25
第六章     结论 26
参考文献 27
致谢 28
附录A      符号说明 29
附录B      GUI操作过程 30

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