International Journal of Advanced and Applied Sciences
Int. j. adv. appl. sci.
EISSN: 2313-3724
Print ISSN: 2313-626X
Volume 4, Issue 10 (October 2017), Pages: 1-9
Original Research Paper
Title: Determination of the center of pressure and dynamic stability for irregularly shaped bodies
Author(s): Elvedin Kljuno *, Alan Catovic
Affiliation(s):
Mechanical Engineering Faculty, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
https://doi.org/10.21833/ijaas.2017.010.001
Abstract:
Irregularly shaped rigid bodies, which move with high velocity through a resistive medium, take specific stable orientations during the motion. The paper shows physical models for estimation of the center of pressure for irregularly shaped bodies and for assessing the dynamic stability of such bodies. Using the developed physical models and the results of numerical simulations for the body of an irregular shape (a geometry similar to the fragments of high explosive projectile), a center of pressure and stability analysis was performed for the given body. It has been shown, based on rotation about one axis, that there is a zone of stability for the body in certain orientations, but to determine it more precisely it is necessary to continuously change two angles about two mutually perpendicular axes that perpendicular to the velocity vector of the center of mass. Generally, for each body, there is an orientation in which the body is in a stable zone (oscillation around the center of mass), but it is difficult to find that zone since one has to perform an extremely large number of numerical simulations for each body of a different shape.
© 2017 The Authors. Published by IASE.
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Keywords: Center of pressure, Aerodynamic force, Stability of irregularly shaped bodies
Article History: Received 23 June 2017, Received in revised form 3 August 2017, Accepted 5 August 2017
Digital Object Identifier:
https://doi.org/10.21833/ijaas.2017.010.001
Citation:
Kljuno E and Catovic A (2017). Determination of the center of pressure and dynamic stability for irregularly shaped bodies. International Journal of Advanced and Applied Sciences, 4(10): 1-9
Permanent Link:
http://www.science-gate.com/IJAAS/V4I10/Kljuno.html
References (4)