Analysis of Stress Characteristics of Composite Wind Rotary Drum Structure
In order to ensure the safety of the composite rotary drum,the stress characteristics are analyzed.The finite element model(FEM)is established for the new-type structure of the composite rotary drum.The linear spring elements are used to simulate the effect of bottom wheels.The accuracy of the FEM is verified by comparing the mode shape and natural frequency between the numerical and experimental results.Then,the structural stress characteristics analysis,optimization and strength evaluation based on the initial schemes of the composite rotary drum and the ring rib are systematically studied,and the following conclusions are conducted.First,under extreme working conditions,the centrifugal force contributes the greatest stress of the rotary drum,followed by the contribution of wind power.Then,the maximum stress occurs on the rotary drumand the maximum deformation occurs on the top cover plate.The angle of layer is the key factor in the design of rotary drum.The maximum stress value is reduced in the new orthogonal layer scheme,but the peak value of deformation displacement is significantly higher than that in the angular layer scheme.Three schemes evaluated above can all meet the strength rules.
composite rotary drummode shape and natural frequencylayer optimizationstress characteristicstrength evaluation
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