可压缩液体反后坐装置液压阻力仿真研究  

Simulation Research of Hydraulic Resistance on Compressible Liquid Recoil Mechanism

作　　者：狄长春[1] 顾赵强 杨玉良[1] 

机构地区：[1]军械工程学院火炮工程系,河北石家庄050003

出　　处：《计算机仿真》2017年第8期6-9,178,共5页Computer Simulation

摘　　要：根据某火炮力学特性设计了一种可压缩液体反后坐装置,结构简单紧凑、动作可靠。采用某二甲基硅液作为驻退液,既能产生液压阻力消耗后坐动能,又能利用可压缩性储存部分能量以供火炮复进使用。针对基于一维准定常流动假设的液压阻力计算模型存在较大局限及误差的问题,建立三维双向流固耦合模型,对反后坐装置后坐复进过程中复杂流场性质及结构场动态特性进行了数值仿真,得到了内部流场及结构场相关数据并绘出液压阻力曲线,试验结果表明,上述法能够较真实地描述可压缩液体反后坐装置的工作特性,为进一步研究结构优化和故障分析提供了有效途径。In order to overcome the limitation and error of Calculation model for hydraulic resistance based on one - dimensional quasi - steady flow, a three - dimensional bidirectional fluid - solid coupled model is established. The numerical simulation is carried out for property of complex flow field and dynamic property of structure field during process of recoiling counter recoil of recoil mechanism, then the relevant data of inner flow field and structure field are obtained, and the curve of the hydraulic is drawn. Experimental results show that the method can describe operat- ing characteristic of the recoil mechanism with compressible liquid actually. It provides an efficient way for researc- hing structure optimization and fault analysis.

关 键 词：流固耦合 计算流体力学 可压缩液体 反后坐装置 动网格 液压阻力 

分 类 号：TJ303[兵器科学与技术—火炮、自动武器与弹药工程]