More accurate and stable time integration scheme

被引:30
作者
Rezaiee-Pajand, Mohammad [1 ]
Karimi-Rad, Mahdi [1 ]
机构
[1] Ferdowsi Univ Mashhad, Dept Civil Engn, Mashhad, Iran
关键词
Time integration; Nonlinear dynamics; Second-order accuracy; Stability; Composite scheme; Trapezoidal rule; MOMENTUM CONSERVING ALGORITHMS; IMPROVED NUMERICAL DISSIPATION; NONLINEAR DYNAMIC PROBLEMS; ONE-STEP METHODS; ENERGY; FAMILY; ELASTODYNAMICS; STABILITY; DESIGN;
D O I
10.1007/s00366-014-0390-x
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
A novel second-order time integration algorithm for solving dynamic problems is presented. To demonstrate the abilities of this formulation, several linear and geometrical nonlinear structures are solved. The outcomes of authors' technique are compared with the ones obtained by other researchers. The findings not only confirm the improved accuracy of the new scheme but also indicate that the suggested method remains stable when the trapezoidal rule fails to produce a stable solution. Effectively maximizing high-frequency numerical dissipation, without inducing excessive algorithmic damping in the important low-frequency region, is one of the proposed tactic merits. Spurious oscillations are removed, and small numerical dispersion error is achieved, when using this approach.
引用
收藏
页码:791 / 812
页数:22
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