Research on Optimal Design of Mobile High-Specific Stiffness Trussed Center Block
This paper executes a detailed optimization design of high-specific stiffness trussed center block for the mobile large-caliber light pipe.Utilizing the finite element method,the study analyzes the maximum deformation,maximum stress,first-order modal frequency,overall mass,optical axis shift angle,and wall thickness of 32 square steel pipes corresponding to the center block.By integrating these analyses with design criteria,the most suitable square steel pipe specifications are identified.Concurrently,the control variable method is employed to ensure a comparative analysis between the trussed center block and plate-type center block under equal mass conditions.The results indicate that the truss type exhibits a 1.15%reduction in optical axis shift angle and an 89.19%increase in first-order modal frequency,demonstrating the supe-riority of the truss structure.The first-order modal frequency of the trussed center block,measured at 60.264 Hz through vibration tap tests and 63.385 Hz via simulation,shows a strong correlation,validating the accuracy of theoretical design and simulation.Additionally,the trussed center block successfully meets project requirements,as confirmed by long-distance stability tests.
truss typecenter blockfinite element analysistest verification
万方数据
维普
