碳纤维复合材料迫击炮身管结构设计与缠绕工艺研究

纤维增强复合材料具有比刚度高、比强度大的轻量化优势,以及可设计性强、耐腐蚀性优、抗疲劳性好等显著特点,可作为武器装备轻量化设计的绝佳选材。在对迫击炮身管进行受力分析的基础上,提出了采用金属内衬外加碳纤维复合材料增强层的迫击炮复合身管双层结构,介绍了用于迫击炮复合身管加工的缠绕设备和缠绕工艺,基于实验结果,综合分析了碳纤维材料的选择、铺层顺序、纤维缠绕张力等工艺对迫击炮复合身管承压性能的影响,可为火炮复合材料身管以及复合材料承载圆筒的结构设计与加工提供参考。

STUDY ON STRUCTURE DESIGN AND FILAMENT WINDING TECHNOLOGY OF CARBON FIBER REINFORCED MORTAR COMPOSITE BARREL

Carbon fiber reinforced composite can be widely used as a kind of structure material for weapon lightweight design,because it has high specific strength and stiffness,weight-light,excellent designability,good corrosion and fatigue resistance property.In this paper,the mechanical properties of traditional mortar barrel was analyzed,and it shows that the barrel weight cannot be reduced and with a bad designability by using metal.To meet the weight-light need,a double-deck structure of mortar composite barrel was designed which was composed of metal lining and carbon fiber reinforced composite outer layer.The winding lathe and technology of carbon fiber reinforced composite mortar barrel was introduced.The experimental curves of strain-loading vs.winding tension,fiber stacking sequence and carbon fiber types were obtained.Based on the experimental data,the effects of winding tension,fiber layer laying sequence and carbon fiber grade on composite barrel static pressure bearing capacity were analyzed.It can be concluded that the metal lining can be thinner and the barrel can be more lightweight by using the carbon fiber as outer strengthened layer,and stacking sequence had little effect on the static load of the barrel.Besides,strain-loading can be improved by increasing the winding tension properly.All of these can provide a reference for the structure design of composite barrel and other composite cylinder.