摘要
针对火炮后坐磁流变阻尼器的特点,以某单管25 mm火炮实验用磁流变阻尼器为研究对象,基于Herschel-Bulkley本构模型,建立了该炮磁流变后坐阻尼器的轴对称一维层流模型,获得了不同磁场作用下阻尼力随活塞速度的变化规律。运用火炮的后坐运动方程,计算了不同磁流体特性指数下,火炮的后坐位移和后坐速度。计算结果表明,磁流体特性指数的变化对磁流变后坐阻尼器的性能影响显著。
A magneto-rheological （MR） recoil damper for a 25 mm air defence gun test application is studied. Based on Herschel-Bulkley shear model, a one-dimensional axisymmetric laminar flow model of the MR recoil damper is proposed, and the relation curves of damping force and piston velocity of the MR damper are obtained according to the proposed model. Using the force-velocity characteristics of the MR damper, the recoil dynamic equation of the 25 mm gun is solved, and the recoil velocity and recoil displacement of the gun are obtained. The simulation results indicate that the value of the MR fluid behavior index has a very big influence on performance of the gun magneto-rheological （MR） recoil damper.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2006年第3期245-249,共5页
Explosion and Shock Waves
