液压自紧身管残余应力随实弹射击的变化规律研究  

Research on Residual Stress of Hydraulic Autofrettaged Barrel in Practice Firing

作　　者：李魁武[1] 曾志银[1] 宁变芳[1] 刘朋科[1] 高小科[1] 吴会民[1] 

机构地区：[1]西北机电工程研究所,陕西咸阳712099

出　　处：《兵工学报》2012年第11期1298-1302,共5页Acta Armamentarii

摘　　要：依据研究获得的液压自紧身管残余应力理论模型,揭示了自紧身管内表面初始残余应力大小及沿壁厚的分布规律。应用Sachs镗削残余应力测试理论与方法,实验确定了实弹射击一定射弹量自紧身管的剩余残余应力。根据理论分析获得的初始残余应力与实验测试的剩余残余应力,通过数据拟合建立了自紧身管残余应力随实弹射弹量的变化关系式。Based on the theory model of residual stress of hydraulic autofrettaged barrel, the magnitude of initial residual stress on inner surface of barrel and it＇ s distribution were discovered. By using Sachs test theory and method on the boring residual stress, the remaining residual stress of autofrettaged barrel was determined in given rounds of firing experimentally. According to the initial and remaining residual stres- ses obtained from theoretical analysis and experiment test, the expression describing the residual stress change with the rounds of firing was founded by data fitting.

关 键 词：固体力学 自紧身管 残余应力 残余应力释放规律 

分 类 号：TJ301[兵器科学与技术—火炮、自动武器与弹药工程]