Auteur Shuenn-Yih Chang
Documents disponibles écrits par cet auteur (11)
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Article : texte imprimé
Shuenn-Yih Chang, Auteur ; Stolarski, Henry K., Éditeur scientifique |It is usually thought that the integration time step should be small enough to represent properly the variation of the dynamic loading with respect to time. However, there is no evaluation criterion that can be used to determine whether the exte[...]
Article : texte imprimé
It was found that the discontinuity at the end of an impulse will lead to numerical inaccuracy as this discontinuity will result in an extra impulse and thus an extra displacement in the time history analysis. In addition, this extra impulse is [...]
Article : texte imprimé
An implementation for the pseudodynamic testing of a one-story frame subject to bidirectional loading was proposed and its feasibility was experimentally verified. Three generalized degrees of freedom at the center of mass of the roof diaphragm [...]
Article : texte imprimé
Wang, Chi-Hsiang, Auteur ; George Z. Voyiadjis, Éditeur scientifique ; Shuenn-Yih Chang, Auteur |Biaxial flexural interaction has been known to significantly affect, in many cases magnify, structural response in the inelastic range. Compared to uniaxial cases, the distinct characteristics of biaxial hysteresis curves often observed are nega[...]
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In performing a pseudodynamic test, an explicit method is generally preferred over an implicit method since it involves no iteration procedure or extra hardware that is often needed for an implicit method. However, its integration time step is u[...]
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Error propagation analysis of an implicit pseudodynamic algorithm has been developed for linear elastic systems. However, these error propagation results might not be applicable to nonlinear systems. Sincethe pseudodynamic testing method aims at[...]
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The pseudodynamic testing of two reinforced concrete bridge columns with a reduced scale of 2/5 was performed to obtain their seismic responses to near-fault ground motions. An identical column was also cyclically tested under constant axial loa[...]
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An explicit pseudodynamic algorithm with an improved stability property is proposed herein. This algorithm is shown to be unconditionally stable for any linear elastic systems and any instantaneous stiffness softening systems. The most attractin[...]
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An explicit method, which simultaneously has the most promising advantages of the explicit and implicit methods, is presented. It is shown that numerical properties of the proposed explicit method are exactly the same as those of the constant av[...]
Article : texte imprimé
In this work, stability and accuracy of the Newmark method for nonlinear systems are obtained from a linearized analysis. This analysis reveals that an unconditionally stable integration method for linear elastic systems is unconditionally stabl[...]
Article : texte imprimé
A scheme is proposed to overcome the discontinuity at the end of an impulse. This scheme is very simple in the step-by-step solution of shock response. The only change is the loading input at the time instant of load discontinuity in performing [...]
