關鍵字查詢 | 類別:會議論文 | | 關鍵字:Application of Iterative Momentum-Time Element to Nonlinear Dynamics

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1 102/2 建築系 姚忠達 教授 會議論文 發佈 Application of Iterative Momentum-Time Element to Nonlinear Dynamics , [102-2] :Application of Iterative Momentum-Time Element to Nonlinear Dynamics會議論文Application of Iterative Momentum-Time Element to Nonlinear DynamicsYAU, J.D.; Kuo, Shyh-Rong淡江大學建築學系The objective of this study is to present an iterative momentum-time element for nonlinear dynamic analysis of structures. Based on the temporal discretization of time finite element approximation and the principle of momentum, the momentum-time element was developed. Since the moment-time element has an accuracy of fourth order, large time steps are allowed to compute dynamic response of nonlinear dynamic systems using the present algorithm. On the other hand, this technique requires only displacements and velocities to be made available at the start of the current time step for integration in state space, the errors caused by estimation of acceleration by previous finite-difference methods are circumvented. Moreover, using the momentum principle can smooth out the load discontinuity in a time interval so that the
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