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http://dx.doi.org/10.20910/JASE.2018.12.5.32

Pressure Transfer Analysis and Experimental Verification of Thin Plate Spring Type Check Valve Considering P-delta Effect  

Hwang, Yong-Ha (Department of Aerospace and Mechanical Engineering, Graduate School at KAU)
Nguyen, Anh Phuc (Department of Aerospace and Mechanical Engineering, Graduate School at KAU)
Hwang, Jai-Hyuk (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
Bae, Jae-Sung (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
Publication Information
Journal of Aerospace System Engineering / v.12, no.5, 2018 , pp. 32-39 More about this Journal
Abstract
In this paper, the calculation of the theoretical pressure transfer ratio due to the deformation of the thin-plate spring type check valve applied to the small piezoelectric-hydraulic pump was carried out. A thin-plate check valve is a flexible body that is deformed by an external force. The deformation of the check valve affects the rate at which the chamber pressure is transferred to the load pressure. The theoretical pressure transfer ratio for each model was calculated to compare the difference between the assumption that the thin-plate check valve is a rigid body and that of the flexible body model. The P-delta effect was considered for the calculation of the pressure transfer ratio of the flexible check valve model. In addition, a verification test for the calculated pressure transfer ratio obtained by considering the deformation of the flexible check valve model was carried out. The load pressure was measured by applying a thin-plate and ball-thin plate spring type check valves, respectively. The experimental pressure transfer ratio was calculated using the respective load pressure obtained from the experiments. The validity of the pressure transfer analysis of the check valve, taking into consideration the P-delta effect, was verified by comparing it with the theoretically calculated pressure transfer ratio.
Keywords
P-delta Effect; Check Valve; Small Piezoelectric-Hydraulic Pump; Pressure transfer ratio;
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Times Cited By KSCI : 1  (Citation Analysis)
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