Dynamic characteristics analysis of supercavitating vehicle structure with stochastic parameters
Stiffness and mass matrixes were given for frequency calculation of supercavitating vehicle structure (SVS) based on semi-analytical finite element method.Considering the randomicity of physical parameters and their relativity,the function of stochastic frequency and probability density function were obtained for SVS by random factor method.The randomicity of frequency for SVS with stochastic physical parameters was analyzed and the characteristics of probability distribution were given for front five order modes.The calculation results show that SVS is the most prone to bending mode,its extremely disadvantage for SVS stability sliding motion in supercavitation.In addition,the frequency have strong randomicity,the external incent frequency in a larger range may lead to load characteristics more bad for SVS.
stochastic parameters supercavitating vehicle structure random factor dynamic characteristics probability distribution
Yun-hua JIANG Wei-guang AN Hai AN
Department of Aerospace Engineering, Harbin Engineering University, Harbin, 150001, China
国际会议
厦门
英文
1894-1897
2012-01-04（万方平台首次上网日期，不代表论文的发表时间）