桥式起重机的动力学模型与仿真计算

The Kinetic Model and Simulation Calculation of the Bridge Crane

根据桥式起重机结构,建立了动力学系统模型,以小车在跨中吊重突然离地这一工况为例,用振型叠加法获得了系统动态特性的数值解,并以实例编程仿真,得到主梁跨中的动应力响应和动载系数,符合工程精度。

According to the structure of the bridge crane, the kinetic system model has been set up, taking the situation that the carriage suddenly left the floor as an example, the numerical solution of the system dynamic characters has been obtained with the form of vibration and superpose method, and also by means of the practical programming simulation, the response of dynamic stress and dynamic factor in the main beam have been obtained as well, which has met the accuracy requirement of the project.