|Table of Contents|

Safety analysis on rocket sled water brake high-speed water-entry impact

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2013年06期
Page:
902-906
Research Field:
Publishing date:

Info

Title:
Safety analysis on rocket sled water brake high-speed water-entry impact
Author(s):
Wang Jian1Zhang Xuguang2Kong Weihong2
1.School of Energy and Power Engineering,NUST,Nanjing 210094,China;
2.Huayin Ordnance Test Center,Huayin 714200,China
Keywords:
rocket sleds water brakes impact dynamics Lagrange smoothed particle hydrodynamics method
PACS:
O353.4
DOI:
-
Abstract:
To analyze its structure safety,an impact dynamics finite element model for a water brake high-speed water-entry is established by Lagrange-SPH(smoothed particle hydrodynamics)method.The structure stresses of the water brake with various drafts are computed when the brake enters water normally,the resistance tubes are blocked and inclines to enter water,and the structure safety results of the water brake are gained.The analyses show that the structure steel water brake has plastic deformation or failure while fences and resistance tubes enter water simultaneously or resistance tubes block water-entry,and even the brake loses its braking ability.This paper suggests that the water brake should enter water by stages and enhance its structure strength furthermore.

References:

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Last Update: 2013-12-31