Dynamic Responses of Supercavitating Vehicles under Non-Stationary Random Excitation

Xiang Hua Song; Guang Ping Zou; Wei Guang An

doi:10.4028/www.scientific.net/AMR.591-593.1934

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 591-593Dynamic Responses of Supercavitating Vehicles...

Dynamic Responses of Supercavitating Vehicles under Non-Stationary Random Excitation

Abstract:

When the front end of the supercavitating vehicles subjects to very large axial non-stationary random excitation at high speed motion under water, it is necessary to analyze dynamic responses of supercavitating vehicles under non-stationary random excitation. The dynamical equation of supercavitating vehicles is transformed into the form of state equations. The Simpson integration method is going to calculate the integral term of the general solution of state equation to improve the precise integration method. The explicit expression of dynamic responses of supercavitating vehicles is deduced, the means and variances of structural responses are calculated with operation laws of the first moment and second moment. Under different sailing speeds and different cone-cavitator angles dynamic responses of supercavitating vehicles are given by the examples, and the effectiveness of the method was demonstrated.

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Periodical:

Advanced Materials Research (Volumes 591-593)

Pages:

1934-1937

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.591-593.1934

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Online since:

November 2012

Authors:

Xiang Hua Song, Guang Ping Zou, Wei Guang An

Keywords:

Dynamic Response, Non-Stationary Random Excitation, Precise Integration Method, Simpson Integration Method, Supercavitating Vehicles

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References

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