Simulation and Parameter Analysis of Whole Closure Process of Retractable Roof Structures
To investigate the dynamic effect of moving roof on fixed roofs and the influence of different working conditions,roof motion characteristics,and the smoothness of contact between movable and fixed roofs on fixed roofs,this paper conducted a full-process simulation of the closure of movable roof with the moving mass method in both transient analysis and static analysis.The calculation results of the two analysis methods were compared,and four parameters,namely the mass of the movable roof(M),the starting acceleration(a),the maximum moving speed(v),and the friction coefficient(μ)between the trolley and the track,were analyzed in the transient analysis model.Results indicate that the dynamic influence of the movable roof on the fixed roof causes a minimum increase of 2.0 mm in vertical displacement.The commencement of the movable roof's movement induces a certain level of shaking in the fixed roof,and the amplitude of the shaking escalates with increased values of parameters M,a and μ.The above four parameters noticeably amplify the vibrational response of the fixed roof,with parameter v exerting the most substantial impact,followed by parameter M.Consequently,during operation,it is imperative for the trolley to move in place one time after initiation,while minimizing multiple starts.The starting acceleration and maximum operation speed ought to be controlled within reasonable limits.The opening and closing of the movable roof must be avoided in snowy conditions,and measures should be taken to maintain smoothness between the trolley and the track.
retractable roofsteel structuregymnasiummoving mass methodsimulation of whole processparameter analysis
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