Material characteristics of an ER fluid and its influence on damping forces of an ER damper Part II: damping forces

✍ Scribed by W.C. Park; S.B. Choi; M.S. Suh

• Publisher: Elsevier Science
• Year: 1999
• Weight: 388 KB
• Volume: 20
• Category: Article
• ISSN: 0261-3069
• DOI: 10.1016/s0261-3069(99)00037-0

✦ Synopsis

This paper presents damping forces of a cylindrical ER damper for a small-sized passenger car. The arabic gum-based ER fluid filled in the damper is subjected to temperature variation and the variation of the damping forces is evaluated. The measured damping forces are compared with those predicted from Bingham model obtained at various temperatures in Part I. The ER damper is continuously operated up to 500 000 cycles and the variations of the operating temperature and damping forces are tracked. Using the Bingham model obtained from mechanical endurance test of the ER fluid in Part I, the variation of the damping forces is predicted with respect to the number of the operating cycle. The predicted damping forces are then compared with the measured ones to demonstrate the effectiveness of the Bingham models distilled from various environmental conditions in Part I.