拉伸弯曲矫直机机组动态仿真分析

建立拉伸弯曲矫直机机组及其钢结构平台的有限元分析模型,并利用有限元分析软件对其进行动态仿真分析. 结果表明,在载荷工况下将不同频率的谐响应仿真曲线进行叠加,得到机组振动的仿真结果;提取其对应实际测点位置的振动烈度值（Vrms2）,将已仿真计算得到的机组在混凝土基础上时测点的振动烈度值（Vrms1）进行比较,得到各测点振动烈度的对应比值Ai;根据比值Ai与实测机组在混凝土基础上的振动烈度值（Vrms0）来预估机组在钢结构平台的振动情况,发现其振动烈度值满足现场要求.

Dynamic simulation analysis of tension leveler unit

The finite element analysis model of the whole unit of tension leveler unit including its steel structure platform was established. In order to obtain the vibration simulation results of the unit, the simulation harmonic response at different frequencies was superposed based on the simulation of loads in operating condition, and then the vibration intensity value （Vrms2） Of positions corresponding to the actual landmarks was extracted from the simulation results, which was compared with the simulation vibration intensity value （Vrmsl） of the landmarks when the unit was placed on the concrete base. The ratios Ai of vibration intensity for each landmark were obtained. Finally, the Ai and the actual meas- ured vibration intensity value （Vrms0） Of the landmarks of tension leveler unit placed on the concrete base were used to predict the unit＇s vibration when it was moved on to the steel structure platform, and the results show that the vibration intensity value satisfies the requirements.