【摘要】 提出一种 1 8个参数人体抵肩拟随机集总参数模型 ,建立了土壤沙箱式弹塑性模型 ,用一种间隙单元 (或称单向抗压单元 )模拟土壤和驻锄之间在竖直方向 (或法向 )上只压不拉的作用点 ;在此基础上建立了发射状态下人 -枪 -土壤耦合系统非线性有限元模型 ,并求解其在连发状态下的枪口响应 ,计算结果符合客观实际 .文中所建立的模型对研究机枪系统发射动力学特性具有一定的参考价值更多还原

【Abstract】 A lumped parameter model with 18 parameters is proposed to represent luncher, and a elastoplastc model of soil like a box filled with soil is made. A kind of gap element (or named semiside pressure resistant element) is used to simulate the reaction between gun and soil in vertical direction. On the base, the system model of unlinear finite element coupled with luncher, machine gun and soil is made, and the response at muzzle when lunching continuously got from calculation on it is well consistent with the fact. The model of this paper is worth to reference when studying lunching dynamics of machine gun system.更多还原