Numerical Evaluation and Comparison of Subcycling Algorithms for Structural Dynamics

摘要

This report compares numerical results obtained from seven proposed subcycling algorithms which were used to solve three test problems. The numerical results show that three of the subcycling algorithms - TRANAL, and the linear and quadratic nodal interpolation schemes - produced accurate and stable solutions. The free element partition algorithm produced stable but significantly inaccurate results for two of the three test problems. Subsequently, the two best algorithms - TRANAL and the linear nodal interpolation algorithm - were used to solve a larger test problem. Keywords: Structural dynamics; Numerical analysis. (kr)