Optimal Design of Supercavitating Underwater Vehicles for Mass Distribution

Abstract:

A finite element model for supercavitating underwater vehicles is developed considering the effects of the connection surfaces of cabins and the non-structural mass distribution on the structural dynamic characteristics. The frequency response of supercavitating underwater vehicles is investigated, and the performance of the configuration with flanged connections is compared to those of the configuration with sleeve connections. The flanged and sleeve configurations are then optimized while minimizing the mass of the shells and the centre-of-gravity coordinate in the axial direction respectively. The computational results indicate that at high frequencies the optimal sleeve configuration is advantageous to minimize the mass of the shells, while the optimal flanged configuration is beneficial to minimize the centroid coordinate in the axial direction, and at the same time determining the appropriate connection configuration depends on the confinement of the constraint conditions at low frequencies.

• Periodical: Applied Mechanics and Materials (Volumes 110-116)
• Pages: 4808-4815
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.110-116.4808
• Online since: October 2011
• Authors: Zhen Yu Ma, Fan Hu, Ming Dong Lin, Wei Hua Zhang
• Keywords: Connections of Cabins, Finite Element Method (FEM), Frequency Response, Optimization of Mass Distribution, Supercavitation

References

[1] Edward Alyanak, Vipperla Venkayya, Ramana Gramdhi, et al. Structual Response and Optimization of a Supercavitating Torpedo[J]. Finite Elements in Analysis and Design, 2005, 41 : 563-582.

DOI: 10.1016/j.finel.2004.10.005

[2] Edward Alyanak, Ramana Gramdhi, Ravi Penmetsa. Optimum Design of a Supercavitating Torpedo Considering Overall Size, Shape, and Structural Configuration [J]. International Journal of Solids and Structures, 2006, 43 : 642-657.

DOI: 10.1016/j.ijsolstr.2005.05.040

[3] Massimo Ruzzene. Non-Axisymmetric Buckling of Stiffened Supercavitating Shells: Static and Dynamic Analysis[J]. Computers and Structures, 2004, 82 : 257-269.

DOI: 10.1016/j.compstruc.2003.09.003

[4] Salil S. Kulkarni, Rudra Pratap. Studies on the Dynamics of a Supercavitating Projectile [J]. Applied Mathematical Modelling, 2000, 24 : 113-129.

DOI: 10.1016/s0307-904x(99)00028-1

[5] Massimo Ruzzene, Francesco Soranna. Impact Dynamics of Elastic Supercavitating Underwater Vehicles[C]. 9th AIAA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, 4-6 September, 2002, Atlanta, Georgia. 1-11.

DOI: 10.2514/6.2002-5632

[6] SONG BoTao. Numerical Investigation of Natural Modal for Aircraft Structure Considering the connection rigidity[D]. Xi'an: Northwestern Polytechnical University, 2003: 80-88(In Chinese).

[7] JIANG ShaoJun. Analysis of Natural Modal of Missle Structure Considering Contact Surfaces[D]. Xi'an: Northwestern Polytechnical University, 2004: 50-60(In Chinese).

[8] ZHANG YuWen. The Applications of Cavity Theories[M]. Xi'an: Northwestern Polytechnical University Press, 2007: 73-179(In Chinese).