CAJ | 학술논문

文章基于Love壳体理论和Helmholtz波动方程推导了内外流场作用下功能梯度材料圆柱壳流固耦合振动方程。研究了流场作用下功能梯度壳内传播波的频散特性，并与各向同性圆柱壳进行比较。研究表明：在以拉伸和扭转运动为主的频段上，功能梯度壳体的材料特性改变对各支传播波相速度的影响较大，且扭转运动对应频段所受的影响大于拉伸运动对应的频段，而对弯曲波相速度的影响较小。该文可为水下航行器新型复合材料壳体的波动特性研究提供参考。
문장기우Love각체이론화Helmholtz파동방정추도료내외류장작용하공능제도재료원주각류고우합진동방정。연구료류장작용하공능제도각내전파파적빈산특성，병여각향동성원주각진행비교。연구표명：재이랍신화뉴전운동위주적빈단상，공능제도각체적재료특성개변대각지전파파상속도적영향교대，차뉴전운동대응빈단소수적영향대우랍신운동대응적빈단，이대만곡파상속도적영향교소。해문가위수하항행기신형복합재료각체적파동특성연구제공삼고。
Based on the Love’s shell theory and Helmholtz wave equations, the vibration equation about fluid-structure coupling with internal and external flow field is deduced. The dispersion characteristics of propagation waves in FG cylindrical shell with flow field is studied and compared with the isotropic cylin-drical shell. The research shows that in the frequency band the mainly motion components are tension and torsion, the change of material of FG cylindrical shell has great influence on phase velocity of the prop-agation waves. And the effect to torsion is more obvious than tension. However it is less important to the phase velocity of bending wave. This paper can provide reference for studying wave-motion characteristics of non-pressure shell with new style composite material.