TY - JOUR
T1 - A stochastic surrogate model for time-variant reliability analysis of flexible multibody system
AU - Kan, Linjie
AU - Zhang, Jianguo
AU - Wang, Qian
N1 - Publisher Copyright:
© JVE INTERNATIONAL LTD.
PY - 2017/10/1
Y1 - 2017/10/1
N2 - The dynamic model of the flexible multibody systems (FMS) is usually the differential equations with time-variant, high nonlinear and strong coupling characteristics. The traditional reliability models are inefficient to solve these problems. And the reliability model is poor in accuracy and computational efficiency. Based on this point, a new stochastic surrogate model for time-variant reliability analysis of FMS is proposed. Combined model order reduction with generalized polynomial chaos, the stochastic surrogate model is established and the statistical characteristics of system responses are obtained. The calculation method of kinematic time-variant reliability is given. Finally, the effectiveness of the method is verified by a rotating flexible beam. The results show that this method has high computational accuracy compared with Monte Carlo method.
AB - The dynamic model of the flexible multibody systems (FMS) is usually the differential equations with time-variant, high nonlinear and strong coupling characteristics. The traditional reliability models are inefficient to solve these problems. And the reliability model is poor in accuracy and computational efficiency. Based on this point, a new stochastic surrogate model for time-variant reliability analysis of FMS is proposed. Combined model order reduction with generalized polynomial chaos, the stochastic surrogate model is established and the statistical characteristics of system responses are obtained. The calculation method of kinematic time-variant reliability is given. Finally, the effectiveness of the method is verified by a rotating flexible beam. The results show that this method has high computational accuracy compared with Monte Carlo method.
KW - Flexible multibody system
KW - Generalized polynomial chaos
KW - Model order reduction
KW - Stochastic surrogate model
KW - Time-variant reliability analysis
UR - https://www.scopus.com/pages/publications/85037363100
U2 - 10.21595/vp.2017.19240
DO - 10.21595/vp.2017.19240
M3 - 会议文章
AN - SCOPUS:85037363100
SN - 2345-0533
VL - 14
SP - 340
EP - 346
JO - Vibroengineering Procedia
JF - Vibroengineering Procedia
T2 - 28th International Conference on Vibroengineering
Y2 - 19 October 2017 through 21 October 2017
ER -