講演抄録/キーワード |
講演名 |
2018-11-09 15:05
Evolution of contact surface of closed Cu rivets carrying large current ○Xue Zhou・Kai Bo・Guofu Zhai(Harbin Inst. Tech) EMD2018-44 エレソ技報アーカイブへのリンク:EMD2018-44 |
抄録 |
(和) |
The mechanism of contact surface of closed Cu rivets are significant to the static welding caused by carrying large current especially for high-power relays. In this paper, a 2D axially symmetric simplified numerical model based on Navier-Stokes equations for incompressible viscous fluid and potential equation for electric field has been built to describe the formation of static welding including the temperature distribution and contact surface changing under large current on copper contact, the melting process is considered, the thermal analysis with melting deformation on a pair of closed copper rivets contact has been numerically simulated by different current. Experiments have been carried out to get the contact force and the static welding behavior. Compared with the existing thermal simulation results, it shows that the contact surface changing in the thermal simulation is much closer to the experiment result. |
(英) |
The mechanism of contact surface of closed Cu rivets are significant to the static welding caused by carrying large current especially for high-power relays. In this paper, a 2D axially symmetric simplified numerical model based on Navier-Stokes equations for incompressible viscous fluid and potential equation for electric field has been built to describe the formation of static welding including the temperature distribution and contact surface changing under large current on copper contact, the melting process is considered, the thermal analysis with melting deformation on a pair of closed copper rivets contact has been numerically simulated by different current. Experiments have been carried out to get the contact force and the static welding behavior. Compared with the existing thermal simulation results, it shows that the contact surface changing in the thermal simulation is much closer to the experiment result. |
キーワード |
(和) |
Electrical contacts / static welding / thermal analysis / overcurrent / / / / |
(英) |
Electrical contacts / static welding / thermal analysis / overcurrent / / / / |
文献情報 |
信学技報, vol. 118, no. 290, EMD2018-44, pp. 21-25, 2018年11月. |
資料番号 |
EMD2018-44 |
発行日 |
2018-11-02 (EMD) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
EMD2018-44 エレソ技報アーカイブへのリンク:EMD2018-44 |