考虑缠绕预应力的轨道炮身管复合外壳渐进损伤分析

doi:10.3969/j.issn.1000-1093.2016.06.004

摘要/Abstract

摘要： 基于渐进损伤理论和Hashin失效准则，建立轨道炮身管纤维缠绕复合外壳的三维渐进损伤模型，采用有限元法分析和预测其损伤的起始和演变发展。借鉴纤维缠绕压力容器的设计理论，计算了等环向应力缠绕的预应力，分析了缠绕预应力对复合外壳渐进损伤的影响。仿真结果表明:复合外壳渐进损伤过程中，基体开裂、分层等多种损伤模式相继出现，其中基体开裂和拉伸引起的分层是复合外壳稳态失效过程中的主要损伤模式;缠绕预应力对复合外壳的某些损伤模式在一定程度上起到了抑制作用，但是加剧了复合外壳整体的损伤。该缠绕方式仅在加载初始电磁压力时，对内膛的刚度和密封性能的改善起到一定作用。

关键词: 兵器科学与技术, 复合材料, 渐进损伤, 身管, 轨道炮, 纤维缠绕

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

中图分类号:

TJ04

尹冬梅，栗保明. 考虑缠绕预应力的轨道炮身管复合外壳渐进损伤分析[J]. 兵工学报, 2016, 37(6): 988-995.

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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