Geometric optimization of controllable magnetorheological shock absorber for commercial passenger vehicle

Kum-Gil Sung; Young-Min Han; Seung-Bok Choi

doi:10.1117/12.775676

18 April 2008 Geometric optimization of controllable magnetorheological shock absorber for commercial passenger vehicle

Kum-Gil Sung, Young-Min Han, Seung-Bok Choi

Proceedings Volume 6928, Active and Passive Smart Structures and Integrated Systems 2008; 69280Q (2008) https://doi.org/10.1117/12.775676
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2008, San Diego, California, United States

Abstract

This paper presents optimal design of a controllable magnetorheological (MR) shock absorber for a passenger vehicle and shows several advantages of the optimized MR shock absorber on vibration control performance. In order to achieve this goal, a cylindrical MR shock absorber, which satisfies design specifications for a mid-sized commercial passenger vehicle, is designed using an optimization methodology. The optimization problem is to find optimal geometric dimensions of the magnetic circuit for the MR shock absorber in order to maximize damping force. The first order optimization method using commercial finite element method (FEM) software is adopted for the constrained optimization algorithm. After manufacturing the MR shock absorber with optimally obtained design parameters, its field-dependent characteristics are experimentally evaluated. The effect of the optimized MR shock absorber on suspension control is investigated using a quarter-vehicle system. Control performances such as vertical acceleration and power consumption are evaluated and compared between the initial and optimal shock absorbers.

Citation Download Citation

Kum-Gil Sung, Young-Min Han, and Seung-Bok Choi "Geometric optimization of controllable magnetorheological shock absorber for commercial passenger vehicle", Proc. SPIE 6928, Active and Passive Smart Structures and Integrated Systems 2008, 69280Q (18 April 2008); https://doi.org/10.1117/12.775676

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