已经得到个称赞 给我点赞
- 教师姓名：王永青
- 性别：男
- 主要任职：Dean of School of Mechanical Engineering
- 电子邮箱：
- 职称：教授
- 所在单位：机械工程学院
- 学位：博士
- 学科：机械电子工程. 机械制造及其自动化
- 毕业院校：大连理工大学
- 曾获荣誉：特聘教授特聘教授
- 办公地点：机械工程学院1#楼346-2房间
- 联系方式：
Aggregated chain morphological variation analysis of magnetorheological fluid (MRF) in squeeze mode
- 点击次数：
- 论文类型：期刊论文
- 发表时间：2019-10-01
- 发表刊物：SMART MATERIALS AND STRUCTURES
- 收录刊物：SCIE
- 卷号：28
- 期号：10
- ISSN号：0964-1726
- 关键字：magnetorheological fluid (MRF); aggregated chain; morphological variation; squeeze mode
- 摘要：Due to the synthetic effect of hydraulic force and magnetic force, chains in magnetorheological fluid (MRF) in squeeze mode appear bending even fracture, especially the latter of which has a potential influence on the macroscopic yield of MRF. Thus fracture mechanism of chains is investigated. As an important factor leading to fractrue, the magnetic force between particles is modelled. Based on the magnetic force model, a fracture criterion is established that when the horizontal component of magnetic force turns to zero, the fractrue phenomenon happens. Based on this criterion, fracture angle and fracture position of chains are analyzed. At last, fracture phenomenon was observed experimentally using an innovative device. It is found that the fracture was the result of interaction of hydraulic force and magnetic force. Driving effect of hydraulic force makes chains bend. Restoring effect of magnetic force prevents chains breaking up. When chains are bent to the extent that the fracture criterion is met, fracture phenomenon happens.