中文摘要：

研究了高冲击载荷作用下的火炮磁流变后坐阻尼器，设计了一多阶带槽且经过光滑处理的长行程磁流变阻尼器，运用电磁场有限元分析软件对阻尼器结构与磁路耦合问题进行了求解，分析了线圈绕向、活塞和钢筒部件材料、饱和电流、阻尼通道等各种工况下阻尼器磁场分布情况，给出了冲击载荷下的磁流变后坐阻尼器磁路设计一般准则．数值计算结果表明设计的长行程火炮磁流变后坐阻尼器满足结构与磁路设计要求．

英文摘要：

A gun recoil magneto-rheological （MR） damper under impact load was researched. A full-scale gun recoil MR damper with long-stroke, multistage slotted and smoothness disposal was designed. The coupling problem between structure and magnetic circuit for MR recoil damper was solved by the electromagnetic field finite element analysis software, and the electromagnetic field distribution of the designed gun recoil MR damper was also analyzed under different conditions, such as coil ringing direction, plunger and steel cylinder part＇s material selection, dampen channel, smoothness and chamfering disposal, etc. The magnetic circuit design rules of MR recoil damper under high impact load were also concluded. The simulation results indicate that the performance of the designed gun recoil damper satisfy the design requirements.