摘要磁流变弹性体是一种新型的复合型材料，基体是高分子聚合物，将软磁性颗粒填充其中，在加磁场或者不加磁场的条件下进行固化。作为一种智能材料，它的流变特性可以根据外加磁场的变化而发生连续、迅速、可逆的变化，并且是非常稳定的。在土木结构中应用最广泛的抗震减灾措施就是基础隔震，然而，地震的发生具有很多不确定性和不可预知性，作为传统的基础隔震设施，被动抗震系统无法适应多频率段的地震波对建筑物的破坏。本文将利用磁流变弹性体刚度与阻尼可控的特性，设计建筑物基础减震器结构，通过计算确定其各种参数，并用Pro/Engineer对结构进行建模。然后利用ANSYS软件对结构的合理性进行模拟和仿真，对比了不同电流下减振器中磁流变弹性体处的磁感应强度大小，对结构优化给出了建议。最后利用半主动控制原理，进行了控制系统的硬件和软件设计，以实现减震效果。49813

关键词  磁流变弹性体  减振器  仿真  半主动控制

毕业论文设计说明书外文摘要

Title    The Design of Magnetorheological Elastomer Damper and Its Controll System                      

Abstract

Magnetorheological elastomer is a new type of composite material.Its matrix is made up of macromolecule polymer,which is filled with soft magnetic particles ,and is made in the condition of adding magnetic field or not.As a kind of intelligent material,its rheological properties can be changed continuously,rapidly and reversibly according to the change of external magnetic field,and it is very stable.The base isolation is most widely used in civil engineering structures for earthquake resistance and disaster mitigation.However,earthquake has many uncertainties and unpredictabilities.As the traditional base isolation facility, passive aseismic system is unable to adapt to the multi frequency segments of seismic wave and reduce the damage of buildings.In this paper,the structure of base damper is designed based on the characteristics of the magnetorheological elastomer(controllable stiffness and damping),and its parameters are determined through calculating,and a structural model is built with the use of Pro / Engineer. The rationality of the structure is simulated by ANSYS.By conducting different currents,the difference of the magnetic flux density within MREs is given for the optimization of its structure.Finally,the semi-active control method is used and the hardware and software design of control system are carried out to realize vibration isolation and damping.

Keywords  Magnetorheological elastomer，Damper，Simulation，Semi-active Control

目   录

1  绪论 1

1.1  研究背景及其意义  1

1.2  磁流变弹性体的研究现状  1

1.3  半主动控制的研究现状 2

1.4  本文的研究内容  2

2  磁流变弹性体减振器结构设计  3

2.1  已有的磁流变弹性体减振器介绍  3

2.2  磁流变弹性体减振器设计   3

2.3  本章小结  6

3  磁流变弹性体减振器结构仿真  7

3.1  ANSYS软件介绍  7

3.2  ANSYS Workbench软件进行分析 7

3.3  本章小结  12

4  磁流变弹性体减振器半主动控制设计  14

4.1  结构振动控制方式  14

4.2  半主动控制系统的硬件设计  16

4.3  半主动控制系统的软件设计  22

结论 27

致谢 28

参考文献29

附录A  磁流变弹性体减振器装配图 31

1  绪论