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Comparisons of Structure-Dependent Explicit Methods for Time Integration
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DOI：10.1142/S0219455414500552.png)
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Abstract
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Chang explicit method (CEM)(1,2) and CR explicit method(3) (CRM) are two structure-dependent explicit methods that have been successfully developed for structural dynamics. The most important property of both integration methods is that they involve no nonlinear iterations in addition to unconditional stability and second-order accuracy. Thus, they are very computationally efficient for solving inertial problems, where the total response is dominated by low frequency modes. However, an unusual overshooting behavior for CR explicit method is identified herein and thus its practical applications might be largely limited although its velocity computing for each time step is much easier than for the CEM.
Keywords:
Explicit method
time integration
structure-dependent method
overshooting
stability
accuracy
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