狙击步枪枪管动态特性分析

Analysis of Dynamic Characteristic of Sniping Rifle Barrel

针对精确狙击步枪射击时枪管的振动影响射击精度的问题,对不同外形结构下的精确狙击步枪枪管进行动态特性分析。以狙击步枪枪管模态分析为基础,通过在有限元软件ANSYS中对不同外形结构的狙击步枪枪管进行瞬态响应分析,并研究枪管在火药气体作用力下的动态特性,得到了枪口中心点的位移及速度响应。分析结果证明:在长度及重量基本相同时,锥形结构枪管的刚度较大,其枪口的位移响应及速度响应较小。该结果对狙击步枪枪管的结构设计有一定的参考价值。

For a sniping rifle, the vibration of the barrel had important influence on its firing accuracy. The dynamic characteristic of different sniping rifle’s barrels was researched. Based on the modal analysis, the transient analysis of different morphological structure on finite element software ANSYS, and dynamic characteristic of barrel under powder gas force was researched. The displacement response and velocity response of the centrality of gunpoint was obtained. The result proved that the inflexibility of cone barrels was bigger than cylinder barrels. For cone barrels, the displacement response and velocity response of the centrality of gunpoint was smaller. These results provide the theoretical basis for the design of the barrel of the sniping rifle.