磁流变弹性体是磁流变材料中新的一员,它是由可磁化的铁磁性颗粒和橡胶基在外加磁场下固化而成的,固化后铁磁性颗粒在基体中形成链状等有序结构,因此其力学、电学、磁学等性质可由外加磁场控制。目前限制磁流变弹性体的大规模应用的一个重要因素是其磁致效应还不能够满足工程需要,制备出具有更大磁致效应的磁流变弹性体材料是当前的紧迫任务之一。在磁流变弹性体链化模型的基础上,引入斜链夹角的正态分布,采用偶板子法从理论上分析了诸多因素对磁流变弹性体磁致效应的影响,包括颗粒链的初始倾斜角、外加磁场强度、剪应变大小等,为材料的制备和性能的优化提供理论上的帮助。
Magnetorheological elastomer is a new member of the magnetorheological materials, which consists of magnetizable iron particles and rubber solidified under the external magnetic field. Because of the chain-like structure of particle chains, its mechanic, electric and magnetic properties can be controlled by the applied magnetic field. Currently, MR elastomer can't be used in the projects cosmically. One of the most important factors is the limited range of magneto-induced effect, therefore preparing material which has more significant magnetoinduced effect is one of the important tasks. In this paper, on the basis of chain-like model, some factors influencing the magneto-induced effect of MR elastomer are analyzed theoretically by using dipole method with the normal distribution of chain's angle introduced, including the oblique angle of particles chains, magnetic field intensity and shear strain etc. This provides theoretical help for material production and optimization.