Numerical investigation of hydroelastic water-entry impact dynamics of AUVs

被引：44
|
作者：
Shi, Yao [1 ,2 ,3 ]
Pan, Guang [1 ,2 ]
Yim, Solomon C. [3 ]
Yan, Guoxin [1 ,2 ]
Zhang, Dong [1 ,2 ]
机构：
[1] Northwestern Polytech Univ, Sch Marine Sci & Technol, Xian 710072, Peoples R China
[2] Northwestern Polytech Univ, Key Lab Unmanned Underwater Vehicle, Xian 710072, Peoples R China
[3] Oregon State Univ, Sch Civil & Construct Engn, Corvallis, OR 97331 USA
来源：
JOURNAL OF FLUIDS AND STRUCTURES | 2019年 / 91卷
基金：
中国国家自然科学基金;
关键词：
Elastic AUV; Hydroelastic effect; Water entry; Impact characteristics; SLAMMING IMPACT; FLEXIBLE WEDGES; FLAT-PLATE; OBLIQUE; SIMULATION; VELOCITY; BEHAVIOR; BODIES; PANELS; SPEED;
D O I：
10.1016/j.jfluidstructs.2019.102760
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In contrast to rigid body autonomous underwater vehicle (AUV) models, elastic AUV models will exhibit hydrodynamic effects due to elastic deformation of the shell during water entry, influencing their load-response characteristics. In this paper, the predictive capability of the selected simulation method is first verified by comparing the simulation results with test data acquired from experiments conducted in a drop-test tank. Then, the effects of the head shape parameters, shell thickness and water-entry state, such as the water-entry velocity and angle, on the acceleration, pressure, stress and structural deformation of an elastic AUV during water-entry impact are investigated. By comparing the characteristics of rigid and elastic bodies, the influence of the hydroelastic effect is revealed. The research results can provide guidance on the design of airborne vehicles and transmedia vehicles. (C) 2019 Elsevier Ltd. All rights reserved.
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页数：19
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