Compilation Of Fatigue Loading Spectrum Of Grid Structure Under Suspended Crane Loading Based On Anysys

Fatigue load spectrum is the prerequisite and basis for fatigue calculation and reliability of fatigue.There are many researches of fatigue loading spectrum both at home and abroad, but mostly concentrated in the areas of aviation,machinery and bridge. The studies on fatigue load spectrum of grid structure are few. The topic of " the study of flat-panel grid structure fatigue practical design " chaired by Professor Lei Honggang has been funded by the National Natural Science Fund. As the project's sub-topics, this paper has made an in-depth study on the fatigue load spectrum of flat-panel grid structure under suspended crane loading.This paper looked back the development and trend of the fatigue and the fatigue loading spectrum both at home and abroad by consulting literature; this paper collected and arranged the technical data of the suspended crane produced by main internal factories and the projects of grid structure with suspended crane by surveying.This paper used ANSYS to establish grid model to simulate operation process of grid structure with suspended crane, after transient analysis, then got the load - time history of point hoist.Thereby it eliminated the large number of complicated work of fatigue load tested and sampled at the scene. Finally, on the basis of statistics, this paper worked out the fatigue load spectrum of flat-panel grid structure, and provided a new approach for researching fatigue load spectrum.At last, a summary was draw about the work of this paper, and this paper also looked forward to the further researches .