Semi-analytical methods for singularly perturbed multibody system models
Semi-analytical methods for singularly perturbed multibody system models
复制标题
奇异摄动多体系统模型的半解析方法
DOI:
10.1016/j.cam.2013.07.040
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
M. Arnold
中科院分区:
文献类型:
--
作者:
S. Weber;M. Arnold
Multibody system models with either small masses or large stiffness terms may cause high computation time due to high frequency oscillations. A method to integrate such problems is motivated by results from singular perturbation theory which relate the solution of the ODE u ̇= f (u, v), ε v ̇= g (u, v) with a small parameter ε> 0 to the solution of the DAE u ̇ 0= f (u 0, v 0), 0= g (u 0, v 0). For most applications in multibody dynamics, the transformation of the linearly implicit second order model equations to this canonical form is not obvious because of non-diagonal mass matrices, constraints and large stiffness terms in the right hand side. In the present paper, we consider singularly perturbed second order problems with non-diagonal mass matrices and investigate scaling for large stiffness terms in flexible multibody systems taking into account the structure of second order equations. Furthermore, the approach is generalized to constrained systems. The computational savings of the proposed quasistatic approximation are illustrated by numerical test results for a flexible four bar mechanism.
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影响因子:
2.8
作者:
Steffen Weber;M. Arnold;M. Valášek
通讯作者:
Steffen Weber;M. Arnold;M. Valášek
DOI:
10.3929/ethz-a-004283507
发表时间:
1993-11
期刊:
Zeitschrift für angewandte Mathematik und Physik ZAMP
影响因子:
--
作者:
C. Lubich
通讯作者:
C. Lubich
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
M. Valášek
通讯作者:
M. Valášek
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
T. Stumpp
通讯作者:
T. Stumpp
DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
P. Rentrop;O. Scherf;B. Simeon
通讯作者:
B. Simeon