目的 利用Ansys有限元软件，对模切机肘杆进行分析及优化设计，实现高速重载模切机动平台高精度、高可靠性、高速平稳运行。方法 采用Adams动力学分析方法，对传动肘杆运动的位移、速度和加速度进行分析，得到其曲线，分析其是否满足重载高速运动工况下模切机的运动规律;利用牛顿-欧拉方法求解复杂多刚体运动系统动力学问题，求出下肘杆受力的数值解，利用有限元分析软件对动平台传动肘杆进行有限元分析，得到在加载一定压力下的应力、应变的云图，并与数值解进行对比分析，判断下肘杆机构是否满足重载的需求。结果 得到了肘杆部件的应力云图和变形云图，及其各个零件的最大应力，应力最大值为469.1 MPa。结论 利用有限元分析的手段，从理论上指导模切压力试验平台的结构优化设计，提高了设计的准确性，缩短了产品的试制周期。

The work aims to analyze and optimize the design of the elbow bar of the die-cutting machine with ANSYS finite element software, to realize the high-precision, high-reliability, and high-speed smooth operation of the high-speed and heavy-duty die-cutting mobile platform. The Adams dynamic analysis method was used to analyze the motion displacement, speed, and acceleration of the transmission elbow bar, to obtain its curves, and analyze whether it met the motion laws of the die-cutting machine under heavy-duty and high-speed motion conditions. The Newton Euler method was adopted to solve the dynamic problems of complex multi rigid body motion systems and the numerical solution of the force on the lower elbow bar was obtained. The finite element analysis software was used to perform finite element analysis on the transmission elbow bar of the mobile platform, and the cloud map of stress and strain under a certain pressure was obtained. Comparative analysis was conducted with the numerical solution to determine whether the lower elbow mechanism met the requirements of heavy duty. The stress cloud map and deformation cloud map of the elbow bar component were obtained and the maximum stress of each component was determined to be 469.1 MPa.The use of finite element analysis to guide the structural optimization design of the die-cutting pressure test platform from a theoretical perspective has improved the accuracy of the design and shortened the trial production cycle of the product.