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Modeling, Simulation and Analysis of Single Tube Hydro-pneumatic Shock Absorber System through Bond Graphs

Publication Date : 11/07/2015

Author(s) :

K G Chaudhari , B Nath.

Conference Name :
4th International Conference on Recent Trends in Engineering & Technology(ICRTET-2015) July 2-4,2015 Organized by SNJB's KBJ College of Engineering,Chandwad,Nashik,Maharashtra,India

Abstract :

The present study is devoted to find modulated shock absorption system to isolate the sensitive heavy equipments from large shocks. Instead of using structural buckling shock absorbers or mechanical springs, the scheme of hydro-pneumatic shock absorber with bilinear damping characteristics, for large shock absorption and less space requirement, is explored. Bi-linear damping of the system is achieved by providing additional flow paths to the oil at different levels of loading of the system. The hydro-pneumatic shock absorption system involves interaction between different energy domains such as hydraulic, gaseous and mechanical. A bond graph based modeling technique has been used for designing of this multi-energy domain system. At beginning of study, the effect of oil compressibility is ignored. Later on oil compressibility is included in the form of a compliance field (Cfield) relating the mass and volume flow rate with the system pressure. The simulated dynamics of single tube system with various aspects of design were presented in this paper.

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