CAJ | 학술논문

电磁轨道炮发射时导轨在电磁斥力作用下向外侧扩张，这种扩张作用直接影响着导轨与固体电枢接触性能。身管结构设计需要对电磁斥力引起的导轨分离量进行限制。利用材料弹性理论对某预紧型电磁轨道身管在预紧力与导轨斥力综合作用下的结构形变进行了理论分析，提出了预估载荷、预紧系数、载荷系数和结构参数等概念，导出了基于导轨分离量和以上参数间的预紧机理数学解析公式，进行了 ANSYS仿真。计算结果表明，预紧技术作为一项重要工程技术可以大幅提高身管径向刚度，减小电磁斥力作用下的导轨分离量。预紧机理的数学解析有助于在身管设计和制造阶段更好地理解和控制导轨分离量。
전자궤도포발사시도궤재전자척력작용하향외측확장，저충확장작용직접영향착도궤여고체전추접촉성능。신관결구설계수요대전자척력인기적도궤분리량진행한제。이용재료탄성이론대모예긴형전자궤도신관재예긴력여도궤척력종합작용하적결구형변진행료이론분석，제출료예고재하、예긴계수、재하계수화결구삼수등개념，도출료기우도궤분리량화이상삼수간적예긴궤리수학해석공식，진행료 ANSYS방진。계산결과표명，예긴기술작위일항중요공정기술가이대폭제고신관경향강도，감소전자척력작용하적도궤분리량。예긴궤리적수학해석유조우재신관설계화제조계단경호지리해화공제도궤분리량。
The rails were expanded outside under the action of the electromagnetic repulsed force when the electromagnetic rail gun was launching.The magnitude of the expanding has di-rect influence on the electrical contact performance between the rail and the solid armature. The rail deflections must be limited for the sake of the design of the rail gun equipment.The e-lasticity theory of the materials was used to analyze the barrel material deflection of certain rail gun equipment under the action of compound effect of assumed load,pretightening force coeffi-cient,load coefficient and configuration parameters.At last,a model was analyzed and simula-ted by use of ANSYS software,and some conclusions were acquired.Conclusions showed that the theory is true and pretightening technique can reduce the rail deflections when the armature is thrown.These analysis and conclusions are help to achieve a better understanding of how to control rail deflections during the process of the electromagnetic rail gun design.