Effect of chamfered orifice inlet on magnetorheological fluid subjected to shock loading

Issue title: Proceedings from the 16th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2013)

Guest editors: Xavier Maldague and Toshiyuki Takagi

Article type: Research Article

Authors: Isnikurniawan, Ahmad^a | Ohba, Hiromichi^a | Kaneko, Hiro^a | Yoshizawa, Ryo^a | Sawada, Tatsuo^{a; *}

Affiliations: [a] Department of Mechanical Engineering, Keio University, Kohoku-ku, Yokohama, Japan | Université Laval, Canada | Tohoku University, Japan

Correspondence: [*] Corresponding author: Tatsuo Sawada, Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan. Tel.: +81 45 566 1504; Fax: +81 45 566 1495; E-mail: [email protected]

Abstract: This study is an investigation on the effect of a chamfered orifice inlet on magnetorheological (MR) fluid subjected to shock loading. Three different orifices (without chamfer, chamfered at 60°, and chamfered at 120° on the inlet area) are used. MR fluid is subjected to shock loading, and a magnetic field is generated on the orifice area. Experiments are conducted by measuring piston displacement and damping force. Piston velocity is calculated from the piston displacement data. The results indicate that a chamfered orifice inlet affects the piston stroke, piston velocity, and damping force. The characteristics of piston velocity between the orifice without chamfer and the chamfered orifices are different. The post-peak decrease in piston velocity in the chamfered orifices is more refined than that in the orifice without chamfer. However, the chamfered shape in the orifice inlet reduces the shock loading performance of MR fluid.

Keywords: Magnetorheological fluid, magnetic field, chamfered orifice, shock loading

DOI: 10.3233/JAE-141893

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 45, no. 1-4, pp. 683-688, 2014