| In recent decades, with extensive use of computers, the rapiddevelopment of computer technology, and the evolution of engineeringstructure aiming at large-span and light-weight, scholars from variouscountries proposed increasing perfected structure dynamic analysis model,and deduced equation of motions after considering various factorsinterrelation in different ways. Then according to actual project parameterinformation, doing simulation analysis and calculation on computersaccording to different situation and requirements, and get a lot of usefulresearch results.Basing on Fortran Powerstation4.0system, a calculation program ofdynamic response about all kinds of moving load is developed. At thesame time, as its pre-and post-processing system, the structure dynamicresponse analysis finite element software which has an efficienthuman-computer interface is developed by using mixed programmingtechnique on Visual Basic6.0system. The proposed technique canovercome respective defects of two languages. Combination of Fortranpowerful computing function and the visualization interface of VB isrealized.In this thesis, with compiled computer program, the author usesprecise integration method, Newmark method, Wilson-θ method and thedifferential quadrature method to calculate the dynamic responses for allkinds of engineering structures (truss, rigid frame and continuous beamsystem) under a variety of loads (impact load, location alternating load, moving load and moving mass).For a large number of examples, the finite element structure isestablished by means of SDRA pre-processing, using some differentnumerical methods and transferring a calculation program written byFORTRAN, the calculation results is obtained and it is reliable inaccuracy. It may realize the function with SDRA to the computed resultcarries on the dynamic graph demonstration and the static graphdemonstration, and is more visual to show the structure dynamic responseof engineering structure under moving loads. |
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