Nonlinear Analysis of the Superposition Performance of the Torque Bar Driven by Folding Rudder Wing
In order to analyze the trend of the superposition performance of the torsion bar driven by the folding rudder wing,a theoretical analysis of the superposition torsion bar group is carried out,and torsion tests with different superposition numbers are designed for actual measurement.The nonlinear trend and impact analysis of the torque performance of the rectangular cross-section torsion bar group with a large aspect ratio in relation to the superposition number are conducted.Based on the experimental results,the mechanism analysis of the nonlinear change of the torsion bar superposition performance is carried out.The results indicate that the measured torque values of the torsion bar combination used for superposition are larger than the theoretical values of linear superposition,and as the number of superposition increases,the deviation between the measured torque performance values and the theoretical values gradually increases.The torque performance of the torsion bar group shows a non-linear curve of a concave increase with the number of superposition.Through the mechanism analysis,it is found that when the stacked torsion bar group twists around the axis,all torsion bars except for the central one are non-aligned with each other relative to themselves,that is,the actual bending torsion coupling deformation occurs,causing it to generate greater stress and change the torque performance.Moreover,as the number of overlays increases,the bending deformation on the outer side of the torsion bar group increases,leading to a concave nonlinear upward change in the superposition performance of the torsion bar group.
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