The Analysis Of Mechanical Properties And Optimum Of Overhead Crane Structure Based On ANSYS

With the expansion of production scale and improvement the degree of automation, the appliance of the crane is widespread and the role of it plays is significant, so the requirement safety, reliability and economy on the crane are increasingly high. Currently levels of CAD technology applied in crane industry are uneven. The application of CAD technology in many companies is merely in drawing level. Mechanics performance analysis using manual calculation is time-consuming and laborious. Facing crane trend of intelligence and light, the method of crane design must change from traditional design mode.Traditional crane design mainly adopts the classical mechanics, and a number of assumptions, which results in poor accuracy, hand strength of surplus, on the other hand structure when the accident occurred, such as structural fracture and break. So in the process of crane design, the characteristics of static and the dynamic characteristics of crane must be considered at the same time. While nowadays dynamic design is not yet mature, many people have also been explored, but the depth is not enough, so, the researches on crane dynamic face difficulties.With the development of computer technology, the finite element analysis software ANSYS development more mature, finite element method has been widely applied and its result of calculation accuracy is recognized. So, in this paper, ANSYS is used to establish the finite element model of overhead crane and carry on the static,optimum and dynamic analysis. In the model, through as faithfully as possible to be of part drawing and simplification in reason, it can improve the accuracy of calculation. In process of the static finite element analysis, the first module of the static finite element analysis is the traveling crab fully loaded and the supporting reaction force and effect to the bridge can be obtained, so the result is more practical.After the bridge crane for the static characteristics of analysis, bridge crane design using APDL language make product safe, reliable and economical.The results show that the optimized size and the size sensitivity.Finally, the optimized crane is carried on dynamic analysis, which are modal analysis, transient analysis and harmonic response analysis.In the process of dynamic finite element analysis, crane operation starting, braking and sudden unloading can be simulated.