Dynamic Characteristics Analysis of Supercavitating Vehicle Structure with Stochastic Parameters

Abstract:

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, it’s 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.

• Periodical: Advanced Materials Research (Volumes 430-432)
• Pages: 1894-1897
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.430-432.1894
• Online since: January 2012
• Authors: Yun Hua Jiang, Wei Guang An, Hai An
• Keywords: Dynamic Characteristic, Probability Distribution, Random Factor, Stochastic Parameters, Supercavitating Vehicle Structure

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