Analysis of Progressive Damage of Composite Housing for Railgun under Winding Prestress

doi:10.3969/j.issn.1000-1093.2016.06.004

Abstract

Abstract: A 3D progressive damage model based on Hashin’s failure criterion and progressive damage theory is established to study the failure mechanism of filament-wound housing for railgun barrel by using finite element method. The simulations predict the onset and evolution behavior of damages in the composite housing for railgun. The prestress based on the filament winding pattern with iso-hoop stress is calculated by referencing the design theory for filament-wound pressure vessels. And the effect of winding prestress on the progressive damage of the filament-wound housing is also analyzed. The results indicate that several damage modes, such as matrix crack and delamination, etc, occur in the composite housing. The matrix crack and delamination damages caused by tension are the main damage modes in the process of steady failure. Some damage modes are inhibited to some extent by winding prestress, while the damage of the whole composite housing is intensified by it. In addition, the winding pattern used in this paper can only improve the stiffness and sealing property of the bore at applied initial electromagnetic pressure.

Key words: ordnance science and technology, composite material, progressive damage, barrel, railgun, filament winding

CLC Number:

TJ04

YIN Dong-mei, LI Bao-ming. Analysis of Progressive Damage of Composite Housing for Railgun under Winding Prestress[J]. Acta Armamentarii, 2016, 37(6): 988-995.

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