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以火炮反后坐系统为对象,研究冲击载荷下磁流变阻尼器(Magneto-rheological Damper,MRD)的结构设计与优化。以冲击缓冲控制过程中需要的最大阻尼力为基本设计目标,设计了MRD的基本结构,进行磁路分析,得到了满足基本设计要求的阻尼器。在此基础上以最大可调系数和最小结构体积为优化目标,提出相应的设计变量和约束条件,用MATLAB实现结构的优化设计,并用ANSYS进行了具有磁场约束的结构优化。优化设计的结果表明,两种优化设计均能提高可调系数和减小结构体积,但MATLAB优化后的磁路性能并不十分理想,而ANSYS优化结果具有较好的综合性能。
With the anti-recoiling system of artillery, the structural design and optimization of Magneto-rheological Damper (MRD) under impact load were studied. Taking the maximum damping force required in the impact buffer control as the basic design goal, the basic structure of MRD was designed and the magnetic circuit analysis was carried out. The damper which satisfied the basic design requirements was obtained. On this basis, the maximum adjustable coefficient and the minimum structure volume are optimized, and the corresponding design variables and constraints are proposed. The optimal design of the structure is realized by using MATLAB, and the structure optimization with magnetic field constraints is carried out by using ANSYS. The results of the optimization design show that the two optimized designs can both improve the adjustable coefficient and reduce the volume of the structure. However, the optimized magnetic circuit performance of MATLAB is not very satisfactory, and the ANSYS optimization result has better comprehensive performance.