端面摩擦对高聚物粘接炸药(PBX)静态压缩强度的影响规律（英文）
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摘要
为研究不同端面摩擦条件下的高聚物粘接炸药(PBX炸药的准静态压缩响应行为,选取一种典型的浇注PBX炸药作为研究对象,在二硫化钼润滑、干摩擦、油脂润滑三种端面摩擦条件下进行了静态压缩试验。利用电子万能材料试验机测定了载荷?位移曲线。基于各向同性弹性理论,运用能量守恒方法初步探讨了端面摩擦机理。结果表明,静态破坏应变与摩擦系数有很大关系;同一种摩擦条件下,具有粘弹特性、材料泊松比大、轴向应变大,小长径比的材料在静态压缩试验中有明显的端面摩擦效应。
To study the quasi?static compression response behavior of polymer bonded explosive(PBX)under different end face friction conditions,a typical casting PBX explosive was selected as the research object,and the quasi?static compression tests were carried out under three kinds of end face friction conditions;molybdenum disulfide lubrication,dry friction,and grease lubrication. The load?displacement curves were measured by using electronic universal material testing machine. Based on the isotropic elastic theory,the friction mechanism of the end face was preliminarily discussed by the energy conservation method. Results show that the static failure strain is closely related to the friction coefficient. Under the same friction conditions,the material with viscoelastic properties,high Poisson's ratio,great axial strain and small length?diameter ratio has an obvious end face friction effect in the static compression test.
To study the quasi?static compression response behavior of polymer bonded explosive(PBX)under different end face friction conditions,a typical casting PBX explosive was selected as the research object,and the quasi?static compression tests were carried out under three kinds of end face friction conditions;molybdenum disulfide lubrication,dry friction,and grease lubrication. The load?displacement curves were measured by using electronic universal material testing machine. Based on the isotropic elastic theory,the friction mechanism of the end face was preliminarily discussed by the energy conservation method. Results show that the static failure strain is closely related to the friction coefficient. Under the same friction conditions,the material with viscoelastic properties,high Poisson's ratio,great axial strain and small length?diameter ratio has an obvious end face friction effect in the static compression test.
引文
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[2]Research progress and development trend of casting desensitized PBX[J].Chemical Propellants&Polymeric Materials,2015,13(1):42-45.
[3]LI Shang?kun,HUANG Xi?cheng,WANG Peng?fei.Recent advances in the investigation on mechanical properties of PBX[J].Chinese Journal of Explosives&Propellants,2016,39(4):1-11.
[4]TANG Ming?feng.Research on mechanical behavior and constitutive model of PBX casting[D].Mianyang:Chinese Academy of Engineering Physics,2014.
[5]XIAO You?cai.Study on dynamic mechanical properties and impact damage behavior of PBX[D].Harbin:Harbin Institute of Technology,2016.
[6]TANG Ming?feng,LAN Lin?gang,LI Ming,et al.Mechanical properties and constitutive models of RDX based cast PBX[J].Chinese Journal of Energetic Materials(Hanneng Cailiao),2014,22(2):215-220.
[7]TANG Ming?feng,PANG Hai?yan,LAN Lin?gang,et al.Constitutive behavior of RDX?based PBX with loading?history and loading?rate effects[J].Chinese Journal of Energetic Materials(Hanneng Cailiao),2016,24(9):832-837.
[8]ZHOU Hong?ping,HE Qiang,LI Ming,et al.Experimental study on aging of PBX under low tensile stress[J].Chinese Journal of Explosives&Propellants,2009,32(5):8-10.
[9]WEN Mao?ping,ZHOU Hong?ping,XU Tao,et al.Reverse change of compressive and tensile properties of PBX based on HMX aged at high temperature[J].Chinese Journal of Energetic Materials,(Hanneng Cailiao),2011,19(4):420-424.
[10]ZHOU Hong?ping,HE Qiang,LI Ming,et al.The tensile properties and creep performance of a long?term thermally aged plastic bonded explosive[J].Chinese Journal of Energetic Materials(Hanneng Cailiao),2016,24(9):826-831.
[11]Belmas R,Gautier L,David C,et al.Preheating sensitization of a TATB composition part three:Sensitization for various stimuli,interpretation and conclusions[J].Propellants,Explosives,Pyrotechnics,2010,30(2):101-104.
[12]WANG Xiao?yan.Study on interfacial friction effect in the SHPB tests[D].Changsha:National University of Defense Technology,2004.
[13]WANG Xiao?yan,LU Fang?yun,LIN Yu?liang.Study on interfacial friction effect in the SHPB tests[J].Explosion and Shock Waves,2006,26(2):134-139.
[14]LI Liang?liang,QU Ke?peng,SHEN Fei,et al.Effect of friction effect on dynamic mechanical performances of a PBXs[J].Chinese Journal of Explosives&Propellants,2016,39(6):69-73.