基于三维等效弹性模量的轨道炮复合身管抗弯刚度分析  

Bending stiffness analysis of composite barrel for railgun based on 3D equivalent elastic modulus

作　　者：尹冬梅[1] 栗保明[1] YIN Dongmei LI Baoming(National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China)

机构地区：[1]南京理工大学瞬态物理国家重点实验室,江苏南京210094

出　　处：《兵器材料科学与工程》2017年第2期17-20,共4页Ordnance Material Science and Engineering

摘　　要：基于复合材料层合板理论,建立轨道炮身管纤维缠绕复合外壳的三维等效弹性模量的计算模型。采用组合梁的转动惯量法对纤维缠绕的轨道炮身管的轴向抗弯刚度进行分析,并与相应有限元法的计算结果做对比。对比显示,两种计算方法在缠绕角度较小时,计算结果一致性较好。还对缠绕角度的变化对身管抗弯刚度的影响进行分析,结果表明,随着缠绕角度的增大,身管抗弯刚度呈先小幅下降后逐渐增大的趋势,并且碳纤维层缠绕角度的变化对轨道炮身管抗弯刚度的影响比玻璃纤维层的要大。An estimated model of 3D equivalent elastic modulus for filament wound composite housing of railgun barrel was established based on the theory of composite laminated plate. The method of moment inertia of composite beam was used to analyze the bending stiffness of filament wound composite barrel for railgun. The results were compared with those obtained by finite element method,which shows a better agreement between them when the winding angle is smaller. The effects of winding angle on the bending stiffness of barrel were investigated. The results reveal that the bending stiffness of barrel decreases slightly and then increases gradually with the increase of winding angle. And the winding angle change of carbon fibre layers has more influence on the bending stiffness of railgun barrel than that of glass fibre layers.

关 键 词：复合材料 层合板理论 轨道炮 身管 等效弹性模量 抗弯刚度 

分 类 号：TJ04[兵器科学与技术—兵器发射理论与技术]