复合材料身管电磁轨道炮轨道结构变形分析  

Rail Structure Deformation Analysis of Composite Material Barrel for Electromagnetic Railgun

作　　者：张祺[1] 莽珊珊[1] ZHANG Qi;MANG Shanshan(Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学,南京210094

出　　处：《机械工程师》2023年第3期78-82,共5页Mechanical Engineer

摘　　要：以复合纤维材料缠绕下的电磁轨道炮身管为研究对象,通过研究其工作原理建立瞬态3D耦合仿真模型,并基于LS-DYNA软件对模型进行电磁-热-结构变形场耦合计算,分析轨道在发射工况下的变形位移情况。结果表明轨道上应力波、振动以及临界速度共振现象的存在,说明预应力的施加会提高结构的稳定性,改变缠绕角度和缠绕层厚度会对结构刚度产生影响。This paper uses the electromagnetic railgun entangled by composite fiber materials as the research object,establishes a transient 3D coupling simulation model by studying its working principle.The electromagnetic-thermal-structural field coupling calculation is performed based on the LS-DYNA software to analyze the deformation displacement of the track in the launching process.The results show that the existence of stress waves,vibration,and critical speed resonance phenomena on the track explain that the application of prestress will improve the stability of the structure,and change the entangled angle and the thickness of the wound layer will affect the rigidity of the structure.

关 键 词：电磁轨道炮 多场耦合 预应力 动力学分析 

分 类 号：TJ866[兵器科学与技术—武器系统与运用工程]