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Proceedings Paper

Fluid structure interaction in electrohydraulic servovalve: a finite element approach
Author(s): Somashekhar S. Hiremath; M. Singaperumal
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Paper Abstract

Electrohydraulic servovalves (EHSV) promise unique application opportunities and high performance, unmatched by other drive technologies. Typical applications include aerospace, robotic manipulators, motion simulators, injection molding, CNC machines and material testing machines. EHSV available are either a flapper/nozzle type or a jet pipe type. In the present paper an attempt has been made to study the dynamics of jet pipe EHSV with built-in mechanical feedback using Finite Element Method (FEM). In jet pipe EHSV, the dynamics of spool greatly depends on pressure recovery and hence the fluid flow at spool ends. The effect of pressure recovery on spool dynamics is studied using FEM by creating the fluid-structure-interaction. The mechanical parts were created using general purpose finite elements like shell, beam, and solid elements while fluid cavities were created using hydrostatic fluid elements. The analysis was carried out using the commercially available FE code ABAQUS. The jet pipe and spool dynamics are presented in the paper.

Paper Details

Date Published: 22 January 2010
PDF: 11 pages
Proc. SPIE 7500, ICMIT 2009: Mechatronics and Information Technology, 75000D (22 January 2010); doi: 10.1117/12.858189
Show Author Affiliations
Somashekhar S. Hiremath, Indian Institute of Technology Madras (India)
M. Singaperumal, Indian Institute of Technology Madras (India)


Published in SPIE Proceedings Vol. 7500:
ICMIT 2009: Mechatronics and Information Technology
Jeha Ryu; Kil To Chong; Ryojun Ikeura; Qingkai Han, Editor(s)

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