摘要
为了精确描述磁流变弹性体的磁致效应,从而使磁流变弹性体应用于工程实际,基于磁偶极子理论,结合铁磁颗粒在磁流变弹性体中的分布特点,引入分布参量n,假设相邻铁磁颗粒的间距满足卡方分布,提出基于卡方分布的磁偶极子模型,推导了磁致剪切模量的表达式。该模型弥补了"均匀分布"假设的不足且形式简单,适于工程应用,同时可以精确反映出各因素对磁流变弹性体磁致效应的影响规律,其中分布参量和外加磁场强度是影响磁致效应的关键因素。
In order to describe the magnetorheological effect of magnetorheological elastomers accurately,and provide theory basis for the engineering application of MRE,a modified mathematical model is proposed based on the dipolar model.Analyzing the characteristic of ferromagnetic particles＇ distribution in the elastomer,this model introduces n as a distribution parameter and assumes that the distance between two adjacent particles meets chi-square distribution,and the expression of magnetic-induced shear modulus is derived.This model overcomes the deficiency of the assumption that particles distribute uniformly in MRE,and it is simple in formation and apt for engineering application.Moreover,the expression of magnetic-induced shear modulus can reflect the law between the magnetorheological effect and each influence factor exactly,and results show the distribution parameter and magnetic intensity are the key factors.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2016年第9期9063-9067,共5页
Journal of Functional Materials
基金
江苏省自然科学基金资助项目(BK20140025)
关键词
磁流变弹性体
磁偶极子模型
卡方分布
磁致剪切模量
magnetorheological elastomer
dipolar model
chi-square distribution
magnetic-induced shear modulus
