本文是在对气动微震造型机压震过程仿真研究的基础上,对预震过程进行数值模拟。通过对预震时震击机构的合理抽象简化,建立力学模型,分析力学模型的受力情况与运动情况,根据力学理论建立起预震时震击机构的运动微分方程式,再将运动微分方程式编制成电算程序,这样就可以用电子计算机进行数值求解。计算结果可以给出预震时整个过程的状态值,即每一瞬时(每一时间步长)的坐标、速 This paper is based on the simulation study of the pressure microseismic modeling machine vibration process, the numerical simulation of the pre-shock process. By reasonably abstract simplification of the shock mechanism during the pre-earthquake, a mechanical model was established to analyze the force situation and the movement of the mechanical model. According to the mechanics theory, the motion differential equation of the shock mechanism during the pre-earthquake was established, and then the differential equation of motion Into the computer program, so that you can use the computer numerical solution. The result of the calculation can give the state value of the whole process during the pre-earthquake, that is, the coordinates of each instant (each time step), the speed