Design and simulation of ultra-large loading door structure made of carbon fiber composite
To improve the efficiency of loading and unloading large-sized cargo in freight train EMUs operations and meet energy-saving and emission-reduction goals,this study proposes the design of a super-large opening door made from carbon fiber composite materials,along with an automated open-ing and closing mechanism.This design aims to reduce vehicle weight and energy consumption while meeting the high strength,high stiffness,and low weight requirements of large-opening doors.First,the structural design of the carbon fiber composite door draws on mature application cases from avia-tion and rail freight transportation.Then,the HyperWorks commercial simulation software is used to conduct a numerical simulation study on the structural design of the door body.Through an in-depth analysis of the effects of longitudinal beams,ring beams,and skin structure on the stiffness and strength of the carbon fiber composite ultra-large loading door,the structural design and material la-yup are optimized.Finally,a large-scale test rig is designed and loaded to simulate internal and exter-nal air pressure loads for structural testing,verifying the mechanical properties and locking perfor-mance of the ultra-large loading door.The results indicate that the integration of 7 ring beams and 16 peripheral locking devices within a plate-beam structure of the door leaf effectively satisfies the requi-site strength and stiffness criteria.Furthermore,the manufacturing process has been demonstrated to be feasible and operational,yielding significant optimization outcomes and meeting practical technical specifications.
high-speed train doorscarbon fibre plastic doorscomposite materialsfinite element simulationoptimization design
万方数据
维普
