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In a cylindrical configuration, ER devices can be created by forming multiple flow paths with a set of concentric annular ducts. These ducts can be connected in parallel to maximize the range of adjustable forces or in series to maximize the absolute force levels. A synergistic result is obtained when groups of ducts are interconnected in parallel and in series within a single device. This paper presents the details of the design, construction, testing, and modeling of ER dampers designed in this fashion. These ER dampers feature multiple concentric electrodes which are electrically in parallel, but may be hydraulically inter-connected through multiple paths. The number of possible interconnection of N concentric ducts is 2(N-1). Each configuration has distinctly different properties.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Henri P. Gavin and Chaval Compucot "Multiduct electrorheological dampers", Proc. SPIE 4330, Smart Structures and Materials 2001: Smart Systems for Bridges, Structures, and Highways, (30 July 2001);

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