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- W3124337371 abstract "Common dynamic relaxation (DR) methods use central finite differences to derive fundamental equations. In this study, Lagrangian interpolation functions are utilized to formulate iterative DR relationships with kinetic damping. This procedure leads to an algorithm that, unlike the ubiquitous DR methods, does not require the calculation of nodal velocities thereby marching forward only through successive nodal displacement. Also, the power iteration method is used to determine the optimal time-step ratio. By utilizing this time-step, the restarting analysis phase which is one of the drawbacks of the kinetic DR strategy is eliminated. Furthermore, a new variable load factor is developed based on the concept of minimization of displacement increment function. To evaluate the performance and efficiency of the proposed method, some truss and frame structures with geometrically nonlinear behavior are analyzed. Results prove that the number of convergence iterations and analysis time are reduced in the new kinetic DR scheme in comparison with other conventional DR methods." @default.
- W3124337371 created "2021-02-01" @default.
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- W3124337371 date "2021-01-24" @default.
- W3124337371 modified "2023-10-16" @default.
- W3124337371 title "Lagrangian interpolation for kinetic dynamic relaxation method with the variable load factor" @default.
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- W3124337371 doi "https://doi.org/10.1007/s40430-021-02819-7" @default.
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