Design dynamic absorber to reduce vibrations of wing of a flyer object: Experimental & numerical investigation

Subject Areas : Vibration Absorbtion

آرش نعیمی آبکناری ¹ , محمدرضا صالحی برزگر ² , mohammad mahdi Kheirikhah ³

1 - کارشناس ارشد، مهندسی مکانیک، دانشگاه بوعلی سینا، همدان، ایران
2 - کارشناس ارشد، مهندسی سازه (سازه‌های فضایی)، وزارت دفاع، تهران، ایران
3 - عضو هیات علمی دانشگاه آزاد اسلامی واحد قزوین

Received: 2016-05-06 Accepted : 2016-05-23 Published : 2017-02-19

Keywords: Analytical solution, Projectile wing, Dynamic absorber, Experimental set up, Frictional damping,

Abstract :

The wings of projectile is one of the important components for correct controlling and navigation. In this study, in order to consider the vibration behavior of the wing, the governing equations of the opening process of the wing system until collision was derived using analytical method. Also, numerical method using ADAMS software and experimental set up are adopted to compare and verify the analytical analysis. This collision lead to an unwanted excitation of the wing which cause to it vibrates. For decreasing the amplitude of vibration of the wing in better manner, in this research a dynamic absorber is designed and made of Teflon as a damper. The dynamic behavior of the wing with the absorber is studied using analytical and numerical methods and the effect of many parameters such as friction coefficient, material properties of the wing pin and contact area is investigated to optimize its behavior. Obtained results demonstrate that increase in the friction coefficient decrease the returning angle and oscillation amplitude of the wing.