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|本期目录/Table of Contents|

Herschel-Bulkley模型下磁流变减振器旁路泊肃叶流动分析

《应用力学学报》[ISSN:1000-4939/CN:61-1112/O3]

期数:
2019年02期
页码:
386-393
栏目:
出版日期:
2018-12-18

文章信息/Info

Title:
Analysis of byroad Poiseuille flow in magnetorheological damper based on the Herschel-Bulkley model
作者:
陈巍1张广2陈冬1杨辉静1
1 河北化工医药职业技术学院 050026 石家庄;2 南京理工大学 机械工程学院 210094 南京
Author(s):
Chen Wei Zhang Guang2 Chen Dong1 Yang Huijing1
1 Hebei Chemical & Pharmaceutical Vocational Technology College, 050026, Shijiazhuang, China; 2 School of Mechanical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, China
关键词:
磁流变胶Herschel-Bulkley泊肃叶流柱塞区域
分类号:
TB381
DOI:
10.11776/cjam.36.02.A029
文献标识码:
A
摘要:
制备了羰基铁粉(CIP)的质量分数为70%的硅树脂基磁流变胶。用安东帕MCR-301型流变仪对其流变特性进行了测量,并对测试结果进行了Herschel-Bulkley本构模型参数识别。最后对MRG-70在该模型下磁流变减振器旁路中的泊肃叶(Poiseuille)流动展开了分析。试验及分析结果表明,在外加磁场下,Herschel-Bulkley本构模型中非牛顿指数n<1。剪切应力随半径的增大而线性增大;当τr>τy形成剪切流,反之则为柱塞流动。在剪切流动区域内,流速随半径增大而非线性降低,剪切速率随半径增大而非线性增大。磁感应强度越大,柱塞流区域越大,柱塞流区域内剪切速率恒为0。体积流量随磁感应强度增强而非线性减小。在0mT~500mT之间体积流量随磁感应强度变化剧烈,进一步增加磁感应强度则变化缓慢。

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