چکیده مقاله
Sensitivity of developed finite element models with respect to time step needs to be investigated for accurate transient analyses In this paper, sensitivity of the ANSYS finite element software for dynamic analyses of cylindrical concrete bridge piers with surrounding water modeled by SOLID45 and MASS21 elements is investigated for the displacement control and force control analyses Although displacement control method is more convenient than the force control method for modeling seismic ground motions in ANSYS environment, it is shown that the displacement control method is sensitive with respect to time step and its accuracy does not stably increase by decreasing time step Furthermore, the amplitude reduction coefficient for parameters of the Newmark time marching solution can reduce numerical oscillations of the ANSYS displacement control method The force control method is less sensitive to time step reduction and has higher accuracy than the displacement controlled method for transient analyses such as fluid structure interaction of bridge piers
کلیدواژهها
نویسندگان
Mehrnoush Farhadi
Project Engineer, Farasharasia Consulting Engineers, Shiraz, Iran
Mahmoud-Reza Banan
Assistant Professor, Civil and Environmental Engineering Department, Shiraz University
Mohammad Javad Abedini
Mehrnoush Farhadi Project Engineer, Farasharasia Consulting Engineers, Shiraz, IranMahmoud-Reza Banan Assistant Professor, Civil and Environmental Engineering Department, Shiraz University
شیوه ارجاع
Farhadi, Mehrnoush and Banan, Mahmoud-Reza and Abedini, Mohammad Javad,1391,Evaluating the Sensitivity of Dynamic Transient Solution of Concrete Bridge Piers in Contact with Surrounding Water to Time Step Values via ANSYS Finite Element Software,9th International Congress on Civil Engineering,Isfahan
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