Mudrov D.S., Zill V.V. Study of stress-strain state of expulsion diaphragms

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Parent Category: Geo-Technical Mechanics, 2016

Category: Geo-Technical Mechanics, 2016, Issue 131

 

Geoteh. meh. 2016, 131, 173-182

 STUDY OF STRESS-STRAIN STATE OF EXPULSION DIAPHRAGMS

¹Mudrov D.S., ²Zill V.V.

¹Yuzhnoye SDO, ²National Mining University 

UDC 539.319:621.45.034.4  

Abstract. The objective of this study was to consider the process of everting the expulsion diaphragms used for propellant tanks of liquid-propellant propulsion systems. In addition, our task was to analyze stress-strain state of a diaphragm everted, to determine a pressure difference that provides diaphragm turning into its final position, and to evaluate the volume of nonexpulsed propellant. Some previously conducted researches concerning expulsion diaphragms were considered; and we came to the conclusion that the approaches used for these researches were imperfect. Stress-strain state was studied using the finite-element method that is the most-used and sufficiently versatile. The finite-element model for studying the stress-strain state was made with the use of ANSYS software package (ANSYS Inc.). The volume of nonexpulsed propellant was estimated by the geometry of a deformed tank structure imported into CAD environment, which provided determination of this parameter with a higher accuracy.
Keywords: shell, finite elements method, expulsion diaphragms, stress-strain state.

REFERENCES

1. Efremov V.N. (1998), Metal diaphragm separators for fuel tanks, Ph.D. Thesis., Designing, manufacturing and testing of aircrafts, Siberian Aircraft Academy, Krasnoyarsk, Russia.
2. Kaplun A.B., Morozov E.M. and Olfereva M.A. (2003), ANSYS v rukakh inzhenera: Prakticheskoye rukovodstvo [ANSYS in the hands of an engineer: A Practical Guide], Editorial URSS, Moscow, Russia.
3. ANSYS Mechanical APDL Basic Analysis Guide. ANSYS Release 17.2 (2016), ANSYS Inc., Canonsburg, USA.
4. Ibid. ANSYS Mechanical APDL Modeling and Meshing Guide. ANSYS Release 17.2 (2016), ANSYS Inc., Canonsburg, USA.

About the authors:

Mudrov Denis Sergeevich, Master of Science, Engineer of Yangel Yuzhnoye Design Office (Yuzhnoye SDO), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Zill Valeriy Vasilevich, Candidate of Technical Sciences (Ph.D), Associate Professor in Department of Mechanical Engineering Technology for Mining, State Higher Educational Institution «National mining university» (SHEI «NMU»), Dnepr, Ukraine.

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