电流变液力学特性的实验研究  

Experimental Studies on Mechanical Properties of Electro-rheological Fluids

作　　者：李斌[1] 杨智春[1,2] 张开达[1] 

机构地区：[1]西北工业大学飞机结构强度研究所 [2]大连理工大学工业装备结构分析国家重点实验室,大连116023

出　　处：《机械科学与技术》2003年第3期487-489,共3页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金 ( 5 980 5 0 14 );航空科学基金( 98B5 3 0 2 1)资助

摘　　要：电流变液的力学性能参数是评价电流变液的性能指标之一 ,也是含电流变液智能结构建模所需的基本参数。对电流变液这种新兴的材料 ,其力学参数测试尚没有成熟统一的方法。本文研制了一系列电流变液力学参数专用测试仪器 ,并对所研制的电流变液的基本力学参数进行了系统的测试。结果表明 ,电流变液的拉伸模量和剪切模在屈服转捩前后有明显差异。本文所研制的电流变液在应力应变曲线上无过冲现象 。Mechanical property parameters of electrorheological fluid are basic parameters for the modeling of electrorheological fluid based smart structures. These parameters are also used to evaluate the quality of electrorheological fluid. For such a new smart material, there is no standard method to measure its mechanical parameters. In the present study, a series of electrorheological fluids were developed and a set of measuring devices were designed and manufactured. The basic mechanical parameters such as static shear strength, shear module, tensile strength, and tensile module of electrorheological fluid were measured systematically. The results show that under shear or tensile loading, the stress strain curve can be divided into two parts: pre yield and yield transition. There is a big difference between modules before and after yield transition. For the electrorheological fluid used in this work, there is not an overshoot in its stress strain curve, the static yield stress is equal to Bingham stress.

关 键 词：电流变液 力学参数 弹性模量 

分 类 号：TB381[一般工业技术—材料科学与工程]