磁流变阻尼器对火炮后坐炮膛时期阻尼特性分析

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摘要磁流变胶(MRG)与磁流变液(MRF)相比具有一定的抗沉降性和超长的稳定性。因此，MRG非常适用于像火炮等在和平时期长时间储藏后其各方面性能仍能满足作战要求的一类武器的反后坐应用中。为了深入研究MRG微观磁-力学特性对阻尼器宏观输出阻尼力学影响的机理，建立了库埃特（Couette）剪切流动和泊肃叶（Poiseuille）压力流动组成的混合流动模式的平行板模型；对阻尼器输出阻尼展开理论分析，最后利用MRG-70力学参数对阻尼器应用在火炮反后坐炮膛时期的可控性展开初步分析。分析结果表明：阻尼器的阻尼系数随MRG-70的动力粘度、活塞有效工作截面积、磁极长度以及Bingham系数的增大而增大；而随阻尼通道轴宽度的二次方及屈服前柱塞流动轴方向无量纲宽度增大而减小。磁流变阻尼器对火炮后坐炮膛时期具有可控性，且在能量输入非常小（0-131mT）的情况下能达到较宽的可控范围。

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	张广
	汪辉兴
	王炅

关键词 ：磁流变胶, 反后坐, 阻尼系数, 混合流动

Abstract：MR Gel (MRG) has a certain anti settlement and long stability compared with MRF.Therefore, MRG is very suitable for recoil applications of a class of weapons, such as artillery, which can still meet the operation requirements after long time storage in peacetime.In order to study the influence of the mechanism of the micro magneto-mechanical properties of MRG on the damping mechanics of the macro-scopical output of the dampers, a parallel plate model for the mixed flow pattern of Couette shear flow and Poiseuille pressure flow was established.The theoretical analysis of the damper output damping was carried out.Finally, the controllability of the damper was analyzed by MRG-70 mechanical parameters.The results of the analysis shows that: the damping coefficient of the damper increases with dynamic viscosity, the effective working area of the piston, the length of the magnetic pole and the Bingham coefficient; in contrast, it decreases with the square of the width of the damped channel and the dimensionless width of the pre-yield plunger.MR damper was controllable to recoil at the beginning of the process of bore period, and the very small energy input (0-131 mT) can achieve a wide controllable range.

Key words： MR gel reverse recoil damping coefficient mixed flow

收稿日期: 2018-04-17 出版日期: 2019-10-15

引用本文:

张广，汪辉兴，王炅. 磁流变阻尼器对火炮后坐炮膛时期阻尼特性分析[J]. 振动与冲击, 2019, 38(20): 172-180.
ZHANG Guang, WANG Huixing, WANG Jiong. Analysis of Damping damping Characteristics characteristics of Magnetorheological magnetorheological Damper dampers for the Aartillery Recoil recoil during Bore bore Period period. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(20): 172-180.

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http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2019/V38/I20/172

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