摘要
考虑超空泡航行体头部受到的轴向扰动载荷作用,推导了水下航行体动力失稳控制方程,进而利用Bolotin方法对水下航行体的动力稳定性问题进行了数值计算,得到了相应的临界频率曲线,并分析了载荷参数和航行体参数变化对主动力不稳定区域的影响规律,计算结果可为水下航行体的安全评估提供一定的理论依据。
The axial disturbance to the head of supercavitation vehicles was considered,and the governing equations for dynamic stability of a submarine vehicle were derived.Then,the numerical calculation for the dynamic instability of the submarine vehicle was performed with Bolotin method,the corresponding curves of the critical frequency were obtained and the effects of the load parameters and the vehicle parameters on the primary unstable region were analyzed.The results provided a certain theoretical foundation for the security evaluation of supercavitation vehicles.
出处
《振动与冲击》
EI
CSCD
北大核心
2011年第2期55-59,共5页
Journal of Vibration and Shock
基金
国家自然科学基金(10772196)
关键词
固体力学
动力失稳
超空泡
MATHIEU方程
临界频率
solid mechanics
dynamic instability
supercavitation
Mathieu equation
critical frequency
