射击全过程典型步枪人枪作用特性研究  

The Critical Man-Rifle Characteristics of Shooting Process with Typical Rifle

作　　者：王缘 王亚平[1] 徐诚[1] WANG Yuan;WANG Ya-ping;XU Cheng(School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China)

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《北京理工大学学报》2020年第11期1168-1173,1189,共7页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(51575279);国家部委预研联合资助项目(6141B02040206)。

摘　　要：为研究步枪射击全过程中人枪动态响应特性和规律,采用三维运动捕捉系统、表面肌电测试系统和足底压力测试系统,获得了瞄准和三发点射过程中枪的运动、上肢肌肉和关节角度响应、人枪压力中心和三发点射散布等数据.试验结果表明,枪托过短时,右肘角度变小导致瞄准阶段三角肌中束疲劳,而首发射击准确度下降;右臂与躯干夹角变小使得射击过程中右臂肱二头肌不易发力,肱三头肌补偿发力而稳定性变差,点射散布变差.分析指出,在枪托长度变化下最能反映三发点射散布的特征量为右臂肱三头肌积分肌电值.The purpose of this paper is to study the dynamic response characteristics and regularity of the man-rifle system in the whole shooting process.The three-dimensional motion capture system,surface electromyography test system and plantar pressure test system were used to obtain some data,including the motion of the rifle,the response of the upper limb muscles and joint angles,man-rifle system pressure center and three-round burst dispersion.The results show that,the decrease of the right elbow angle can lead to the fatigue of the medial deltoid muscle,resulting in the decrease of first shot accuracy in the aiming stage.Also the decrease of the angle between the right arm and the trunk can get it hard for the biceps muscle of right arm to exert,making the triceps brachii muscle compensate weak for the instability during the shooting process.These are the reasons that the shooting dispersion becomes worse when the buttstock is too short.The analysis results indicate that the iEMG value of right arm’s triceps brachii muscle is the best characteristic to reflect the shooting dispersion when the buttstock length changes.

关 键 词：人枪系统 响应特性 步枪设计参数 三发点射散布 

分 类 号：TJ22[兵器科学与技术—武器系统与运用工程]