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NONLINEAR DYNAMIC SIMULATION OF AN AXIALLY SLIDE-SPIN ROCKET FLEXIBLE SYSTEM WITH CLEARANCE 被引量:3

NONLINEAR DYNAMIC SIMULATION OF AN AXIALLY SLIDE-SPIN ROCKET FLEXIBLE SYSTEM WITH CLEARANCE
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摘要 A hybrid approach is presented to investigate the dynamic behavior of anaxially slide-spin flexible rocket with nonlinear clearance. The equations of motion of the flexiblerocket are derived based upon Euler-Bernoulli beam theory and Hamilton principle and the finiteelement method. The characteristics of clearance between the spinning rocket and launcher areconsidered to be piecewise linear. Numerical solution is developed by direct integration method anddemonstrates the validity of the method. The coupled dynamic behavior of axial motion and transversevibrations of rocket are analyzed, and the influences of axially moving acceleration, spin speed,linking stiffness of elastic 'shoes', and the nonlinearity of clearance on the motion attitude ofrocket are studied. A hybrid approach is presented to investigate the dynamic behavior of anaxially slide-spin flexible rocket with nonlinear clearance. The equations of motion of the flexiblerocket are derived based upon Euler-Bernoulli beam theory and Hamilton principle and the finiteelement method. The characteristics of clearance between the spinning rocket and launcher areconsidered to be piecewise linear. Numerical solution is developed by direct integration method anddemonstrates the validity of the method. The coupled dynamic behavior of axial motion and transversevibrations of rocket are analyzed, and the influences of axially moving acceleration, spin speed,linking stiffness of elastic 'shoes', and the nonlinearity of clearance on the motion attitude ofrocket are studied.
出处 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2005年第1期75-78,共4页 中国机械工程学报(英文版)
基金 This project is supported by Science Foundation of Shanghai Municipal Co-mmission of Education, China(No.98AJ01) Provincial Natural Science Foundation of Shanghai, China(No.03ZR14032).
关键词 Dynamics Spinning rocket Launch behavior Dynamics Spinning rocket Launch behavior
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  • 1Weeks G E , Cost T L. Coupled-interaction launch behavior of a flexible rocket and flexible launcher. J. of Spacecraft, 1980, 17 (5): 432-439.
  • 2Mingori D L, Yam Y. Nutational instability of a spinning spacecraft with internal mass motion and axial trust. In: Proceeding of AIAA/AAS Astrodynamics Conference, Williamsburg, VA, 1986:367~375.
  • 3Xie H, Flowers G T, Feng L, et al. Steady-state dynamic behavior of a flexible rotor with auxiliary support from a clearance bearing. ASME J. of Vibration and Acoustics, 1999, 121:78~85.
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