Optimal Design of Circular Jacket for Twin-screw Extruders Based on ANSYS
The optimal design of circular jacket for the twin-screw extruder was implemented,in which,having a reinforcing ring arranged on outer surface of the jacket to reduce the maximum stress and total de-formation of the structure and then reduce thickness of this circular jacket.Employing a simulation analysis method to compare reinforcing rings'influences with different section shapes on the circular jacket's sur-face indicates that"L-shaped"reinforcing rings have significant effect on the stress.In addition,through se-lecting proper number of reinforcing rings,adopting ANSYS Workbench parametric optimization platform,employing 80 groups of random sampling and equal step operation,each parameter's sensitivity to the stress of the jacket structure was analyzed to show that,the thickness of reinforcing ring S,height H,width L and jacket thickness T have significant effects on both the stress and deformation of the jacket structure while the thickness of casing t has less effect there.Finally,the optimization analysis was carried out to determine optimal structure and it indicates that thickness of the oblong jacket can be reduced by 60%while the total mass of the equipment reduced by 17.42%.
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