Capillary Property of Entangled Porous Metallic Wire materials and Its Application in Fluid Buffers:Theoretical Analysis and Experimental Study  

作　　者：Yu Tang Yiwan Wu Hu Cheng Rong Liu 

机构地区：[1]Engineering Research Center for Metal Rubber,School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou 350156,China [2]AECC Guizhou Liyang Aviation Power Co.,LTD,Guiyang 550014,China [3]College of Computer and Information Sciences,Fujian Agriculture and Forestry University,Fuzhou 350156,China

出　　处：《Defence Technology（防务技术）》2024年第1期400-416,共17页Defence Technology

基　　金：supported by the National Natural Science Foundation of China (Grant No.51805086)。

摘　　要：Strong impact does serious harm to the military industries so it is necessary to choose reasonable cushioning material and design effective buffers to prevent the impact of equipment.Based on the capillary property entangled porous metallic wire materials(EPMWM),this paper designed a composite buffer which uses EPMWM and viscous fluid as cushioning materials under the low-speed impact of the recoil force device of weapon equipment(such as artillery,mortar,etc.).Combined with the capillary model,porosity,hydraulic diameter,maximum pore diameter and pore distribution were used to characterize the pore structure characteristics of EPMWM.The calculation model of the damping force of the composite buffer was established.The low-speed impact test of the composite buffer was conducted.The parameters of the buffer under low-speed impact were identified according to the model,and the nonlinear model of damping force was obtained.The test results show that the composite buffer with EPMWM and viscous fluid can absorb the impact energy from the recoil movement effectively,and provide a new method for the buffer design of weapon equipment(such as artillery,mortar,etc.).

关 键 词：Entangled porous metallic wire materials Capillary property Viscousfluid Low-speed impact Damping force 

分 类 号：TJ04[兵器科学与技术—兵器发射理论与技术] E95[军事—军事工程]