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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
A quasi-random lumped parameter model of human body with 18 parameters is proposed. A sand-soil elastic-plastic model is established. A gap element (or unidirectional compression element) (Or normal direction), the nonlinear finite element model of human-gun-soil coupling system under launching condition was established and its muzzle response under continuous firing condition was solved , The calculation results are in line with the objective reality.The model established in this paper has a certain reference value for studying the launching dynamics of the machine gun system