• Title/Summary/Keyword: Pulsating Controlled Thrust

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Dynamic Stability of a Free-Free Beam with a Tip Rigid Body under a Controlled Pulsating Thrust (끝단 강체를 갖고 맥동 제어추력을 받는 양단 자유보의 동적 안정성)

  • Ryu, Bong-Jo;Lee, Gyu-Seop;Seong, Yun-Gyeong;Choe, Bong-Mun
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.24 no.1 s.173
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    • pp.232-239
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    • 2000
  • The paper describes the parametric instability of free-free beams subjected to a controlled pulsating follower force. The beam has a tip rigid body not a mass point, and the direction of pulsating follower force is controlled by the direction control sensor. Equations of motion are derived by Hamilton's principle and the instability regions are obtained by finite element formulation. The effects of magnitude, rotary inertia, the distance between free end of the beam and the center of gravity of the rigid body on the instability types and regions are investigated by the change of the constant and periodic part of the follower force.