Research On System Of Prediction Of Fatigue Life For The Main Shaft Based On ANSYS FE-SAFE

In recent years, with the rapid development of our economy, the domestic steel demand exceeds supply. Steel enterprises in the continuous expansion, while pursuing mega-destroyer spell equipment to maximize yield. Heavy mill main transmission shaft and universal pick shaft fracture accidents occur frequently. Based on the above-mentioned problems, to one group company seamless perforation shaft and universal pick axis machine of fatigue strength and fatigue life was studied.First, the use of ANSYS finite element analysis software Lord transmission shaft and the universal connect static strength analysis. Using ANSYS direct modeling when modeling. According to pick up the shaft and universal shaft to the actual support and torque imposes constraints and torque load. Analyzes and discusses main transmission shaft and universal pick shaft in 920MPa torque load stress results value and the stress distribution law, also found its static intensity weak area. More importantly, the unit load of static strength analysis of the stress the result is fatigue analysis, it covers basic data necessary shaft and universal pick shaft stress distribution conditions and characteristics.Secondly, fatigue strength analysis another important link is fatigue used in computing the torque load spectrum. Impact torque load time process is the effect of axial shaft and universal after Lord fatigue strength and fatigue life of important factor. Therefore, the paper measured under the conditions of different transmission torque load time course, and use rain flow count method and probability statistics measured torque load time compiled the course load spectrum. Prepare the torque load spectrum after Lord closer to pick up the shaft and universal shaft actual load, guarantee the correctness of the fatigue analysis.Finally, based on the fatigue analysis theory, the static strength analysis unit load stress results and prepare torque load spectrum import ANSYS software that monitors FE - fatigue analysis of main shaft and universal calculated the fatigue strength pick shaft, and forecast the fatigue life. Forecasting the shaft and get punched machine the fatigue life of universal pick shaft with enterprise of the actual use of shaft and universal pick shaft Lord consistent life basic that this fatigue analysis method and the fatigue life prediction method is feasible.In order to monitor real-time transmission shaft torque load and statistics a cause of fatigue load spectrum transmission shaft, real-time calculation perforation pick axis machine and universal residual lifetime, this paper designed a set of long-term on-line monitoring torque transmission shaft torque sensor. And of the sensor using ANSYS software, the statics analysis, obtains the stress-strain relationship with measured stress strain numerical consistent conclusion.