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Adaptive Time Integration Method for DAEs of Multibody Systems

[+] Author Affiliations
Jieyu Ding, Zhenkuan Pan

Qingdao University, Qingdao, Shandong, China

Paper No. IMECE2012-87049, pp. 1089-1092; 4 pages
doi:10.1115/IMECE2012-87049
From:
  • ASME 2012 International Mechanical Engineering Congress and Exposition
  • Volume 4: Dynamics, Control and Uncertainty, Parts A and B
  • Houston, Texas, USA, November 9–15, 2012
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4520-2
  • Copyright © 2012 by ASME

abstract

An adaptive time integration method is developed for the index-3 differential-algebraic equations (DAEs) of multibody systems to improve the computational efficiency as well as the accuracy of the results. Based on the modified general-α method, the adaptive time integration is presented. At each discrete time interval, the time step size is changed through Richardson extrapolation with definable computation accuracy. A rotary rod slider system is used to validate the presented adaptive time integration. The accuracy and efficiency are determined by the expected order of the accuracy in Richardson extrapolation.

Copyright © 2012 by ASME

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