弹性枪架的等效刚度

The Equivalent Stiffnesses of Elastic Tripod Mount of Machinegun

该文研究弹性枪架的等效刚度，为机枪系统合理的动力匹配提供必要的力学参数。用结构力学传递矩阵法建立了三维空间中一般变截面弹性梁变形的力学方程。以机枪正前方向射击为研究对象，取枪身与托架的联接处作为分析枪架刚度的特征点，应用柔度法分析枪架的弹性变形，由枪架的支承边界条件得到柔度方程，根据刚度与柔度的互逆关系得到了以６个参数描述的三自由度非正交广义弹簧系统。编制了通用的计算程序。

This paper studies the equivalent stiffnesses of elastic tripod mount of machinegun to provide the necessary mechanical parameters for reasonable dynamic collocation of the total machinegun system.The mechanical equations of deformation of elastic beam with varying across section in the three dimensional space are established by the use of the transfer matrix method in structural analysis.Taking the dead ahead fire of machinegun as an example and