Mechanical Analyses of Rails and Panels in a Rectangular Electromagnetic Rail Launcher  

作　　者：Wei He Xiangzhong Bai Song Chen 

机构地区：[1]College of Architectural Engineering and Mechanics,Yanshan University

出　　处：《Journal of Harbin Institute of Technology(New Series)》2018年第5期53-60,共8页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Natural Science Foundation of China(Grant No.50875230);the Doctor Foundation of Yanshan University,Qinhuangdao,Hebei China

摘　　要：In the present work,rails and panels in a rectangular electromagnetic rail launcher were simulated as finite-length bi-layer elastic foundation beams. Mechanical equilibrium equations were established for these bi-layer beams under the electromagnetic and contact forces between armatures and rails. With the application of Generalized Krylov function,analytical expressions of rails( upper beam) and panels( lower beam) 'deformation and stress were generated. The analytical results agree well with ANSYS calculations even in the presence of electromagnetic and armature's forces,a strong indication of the reliability of the analytical approach. The current work lays the foundation for mechanical analyses of rectangular electromagnetic rail launchers,and offers help in future designs and calculations in marine,aerospace,and civil engineering.In the present work,rails and panels in a rectangular electromagnetic rail launcher were simulated as finite-length bi-layer elastic foundation beams. Mechanical equilibrium equations were established for these bi-layer beams under the electromagnetic and contact forces between armatures and rails. With the application of Generalized Krylov function,analytical expressions of rails( upper beam) and panels( lower beam) 'deformation and stress were generated. The analytical results agree well with ANSYS calculations even in the presence of electromagnetic and armature's forces,a strong indication of the reliability of the analytical approach. The current work lays the foundation for mechanical analyses of rectangular electromagnetic rail launchers,and offers help in future designs and calculations in marine,aerospace,and civil engineering.

关 键 词：RECTANGULAR ELECTROMAGNETIC rail LAUNCHER Generalized Krylov function BI-LAYER elastic foundation beam mechanical equilibrium equation ANSYS 

分 类 号：TJ301[兵器科学与技术—火炮、自动武器与弹药工程]