Dynamics Response of Filament-Wound Composite Barrel for Rail Gun With Acceleration Load

被引:8
|
作者
Yin, Dongmei [1 ]
Xiao, Hongcheng [1 ]
Li, Baoming [1 ]
机构
[1] Nanjing Univ Sci & Technol, Natl Key Lab Transient Phys, Nanjing 210094, Jiangsu, Peoples R China
关键词
Barrel; composite insulation; critical velocity; dynamic response; filament winding; rail guns; HYPERVELOCITY LAUNCHERS; CRITICAL VELOCITY; FRACTURE; TUBES;
D O I
10.1109/TPS.2018.2822665
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Based on Love's shell theory, the critical velocity of a flexural wave in the composite housing of rail-gun barrel is calculated through using the calculation principle of 3-D effective elastic moduli of composite laminate. The result is close to the one predicted by the finite-element method. A 3-D nonlinear transient finite-element model based on the damage mechanics theory and multilayered solid element is established for the filament-wound composite barrel of rail gun under moving electromagnetic pressure. It is used to analyze the dynamic responses and the initiation and development of damage for the rail-gun barrel from the viewpoint of propagation of stress wave. Simulation results reveal that some physical quantities in composite housing for rail-gun barrel, such as stress and displacement, are enlarged obviously with the moving velocity of electromagnetic pressure near the critical velocity of composite housing for rail-gun barrel. Because of the actions of stress waves in barrel, such as reflection, matrix failure occurs first on some axisymmetric planes of composite housing.
引用
收藏
页码:1847 / 1854
页数:8
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