Static-dynamics Analysis And Optimization Design Of Column Of Bolted Node Spheres Machining Center Structure

In this paper based on the development of machining center,According to thephenomenon of the higher column characteristics of bolted node spheres MachiningCenter Structure. The column of bolted node spheres Machining Center Structure arersearched in the analysis and optimization of the structure with general finite analysissoflware ANSYS．In the first, said the issue of background and significance of research both athome and abroad present situation, and The most commonly Structure analysismethod of finite element analysis reference to the analysis and design of thecolumn,Laid a theoretical foundation for the subsequent research work.According to the structural characteristics and the force of the machining centercolumn, To the appropriate predigestion of the column. Select3d model softwarePro/E establish the column geometric model,And import the built model into thefinite element analysis software ANSYS Through the model definition unit materials,materials properties and exert boundary constraint conditions to establish the finiteelement model of the column,and then static finite element analysis based on theknowledge of the static mechanics,simulation static condition and applied load.Check intensity according to the analysis obtained result of strength theory, accordedto the maximal displacement deformation, the stiffness of column was assessed andproposed an improved scheme. Analysis the before heightening column and get thebiggest stress and maximum a value will become the objective function of the optimaldesign about after heightening column.Second, make modal analysis and harmonious response analysis for thecolumn,get8natural frequency and vibration mode for before heightening and afterheightening column. And combined with the harmonic response analysis results of theafter heightening column to comprehensive evaluation the column mechanicalproperties. Through the modal analysis and the harmonious response analysis resultsshow that, the after heightening column easily occur resonance in frequency400HZplace, should try to avoid. Static analysis, modal analysis and harmonious responseanalysis lay a foundation for the optimization design and dynamic improvement.Again, the four wall thickness d10, d11, d12d13for input function in theoptimization design of the column. The total quality and the maximum deformation ofthe displacement in the static analysis get for the output function. Optimized design of column with ANSYS Workbench, thus get24optimized design scheme, choosethree groups candidate optimized design scheme from24. Then conducted modalanalysis respectively for the three optimization scheme. Take the first four bands ofnatural frequency and vibration mode, get the analysis results, and combined withstatic analysis results comprehensive selection to the optimization of the optimalscheme.