悬臂式电磁发射导轨及壁板在发射状态下的强度分析

为进一步研究电磁炮的模型理论，建立了方型电磁发射装置的双层弹性基础悬臂梁模型。简化导轨和壁板为上、下梁，用解析法求解其在工作状态下的动态响应，并使用数值法求解与之比较。研究结果显示：解析法和数值法的计算结果较为吻合，解析法的可靠性在一定程度上得到了验证；双层弹性悬臂梁动态响应的最大值发生在距起始位置0~0.5 m范围内，且上梁的响应比下梁的大。研究结果可为电磁炮的强度分析以及设计提供一定参考。

Strength Analysis of Rails and Panels of Cantilever Electromagnetic Railgun during Launching

A cantilevered double-layer elastic beam model with the rails as upper beams and the panels as lower beams is established for further investigating the model theory of electromagnetic railgun. The analytical method is used to get the bending moment and stress of the model during launching. The numerical solution is compared with the analytical solution. The results show that the numerical solution is in good agreement with the analytical solution, and the analytical method is verified to be reliable. The maximum dynamic response of double-layer elastic beam occurs in the range of 0 to 0.5 m from starting position, and the responses of upper beams are bigger than those of lower beams. The research results can be used for the design and strength analysis of electromagnetic railgun. Key