摘要
The stability of a variable-mass flexible spinning projectile under thrust is researched. The spinning projectile is simplified as a Timoshenko beam model, considering gyroscopic effect and shear effect, motion equations are derived based on the finite element method to analyze the effects of variable-mass, follower thrust and spinning speeds on the stability of the spinning projectile. Using the self-adaptive Newmark method, the transverse vibration response of the spinning projectile is solved. The results show that the variable-mass and thrust have influence on the natural frequency, precession frequency and critical speed. When the spinning speed is equal to the critical speed, the projectile occurs a transient resonance under the influence of the mass, and the peak time of the resonance response is slightly delayed compared with the coincidence time.
投稿的翻译标题 | Stability Analysis of Variable-Mass Flexible Spinning Projectile under Thrust |
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源语言 | 繁体中文 |
页(从-至) | 199-205 |
页数 | 7 |
期刊 | Yuhang Xuebao/Journal of Astronautics |
卷 | 41 |
期 | 2 |
DOI | |
出版状态 | 已出版 - 28 2月 2020 |
关键词
- Finite element method
- Self-adaptive Newmark method
- Spinning projectile
- Timoshenko beam
- Transverse vibration