Configuration design of a lightweight torpedo subjected to an underwater explosion

被引:13
作者
Kalavalapally, Rajesh [1 ]
Penmetsa, Ravi [1 ]
Grandhi, Ramana [1 ]
机构
[1] Wright State Univ, Dept Mech & Mat Engn, Dayton, OH 45435 USA
关键词
Lightweight torpedo; Underwater explosion; Fluid-structure interaction; HBX-1; explosive; SHOCK RESPONSE;
D O I
10.1016/j.ijimpeng.2008.01.016
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The response of a lightweight torpedo when Subjected to an underwater explosion (UNDEX) is an important criterion for Multidisciplinary design. This paper investigates the effect of structural stiffeners on the performance of a lightweight torpedo. The finite element package ABAQUS was used to model the UNDEX and the fluid-structure interaction (FSI) phenomena, which are critical for accurate evaluation of torpedo stress levels. The pressure wave resulting from an underwater explosion was modeled using similitude relations and it Was assumed to be a spherical wave. Various explosive weights and explosion distances were explored to determine the critical distance both for an un-stiffened and a stiffened torpedo. Once it was established that the stiffened torpedo performed better under explosive pressure loads. various configurations were studied to determine the optimal number of ring and longitudinal stiffeners. A final configuration was obtained for the torpedo that had Minimum weight and was least sensitive to small manufacturing Variations in the dimensions of (tie stiffeners. This paper presents details of the torpedo and fluid models and the finite element analysis method for FSI. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:343 / 351
页数:9
相关论文
共 16 条
[1]  
ADAMCZYK R, 1997, P ABAQUS US C MIL IT, P73
[2]  
ARDEN K, 1995, P MSC 1995 WORLD US
[3]  
BURCH IA, 1999, DSTOTR0891
[4]  
CICHOCKI K, 1994, P ABAQUS US C NEWP U, P207
[5]  
COLES RH, 1948, UNDERWATER EXPLOSION
[6]  
FELIPPA CA, 1980, P 2 C INN NUM ENG SC, P79
[8]   An integrated wave-effects model for an underwater explosion bubble [J].
Geers, TL ;
Hunter, KS .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 2002, 111 (04) :1584-1601
[9]  
*KARLSS SOR INC, 2003, ABAQUS THEOR MAN VER
[10]   Comparison of USA-DYNA finite element models for a stiffened shell subject to underwater shock [J].
Kwon, YW ;
Cunningham, RE .
COMPUTERS & STRUCTURES, 1998, 66 (01) :127-144