In the case of models with numerous and eventually multidisciplinary components, cosimulation technique can be employed to link independently developed submodels. A T-T gluing algorithm is presented and validated for rigid multi-body systems. The coupling of the different submodels, resulting from exploding the all-in-one model at its mechanical joints, consists in imposing holonomic constraints for each joint separating two submodels. At each simulation step, kinematic quantities are computed and sent from the submodels to the central part of the algorithm. There a global Newton-Raphson iterative procedure permits, by means of a so-called gluing matrix, to upgrade the interface efforts which are then returned to the submodels. Two concrete examples are “cosimulated” with minimal coordinates and by considering the constraints at velocity level. The illustrated results and errors demonstrate the accuracy of the method. The algorithm can be generalized for the other kinematic approaches and for finite element and computational fluid dynamics codes.
- Design Engineering Division and Computers in Engineering Division
A Cosimulation T-T Procedure Gluing Subsystems in Multibody Dynamics Simulations
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Rustin, C, Verlinden, O, & Bombled, Q. "A Cosimulation T-T Procedure Gluing Subsystems in Multibody Dynamics Simulations." Proceedings of the ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 4: 7th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B and C. San Diego, California, USA. August 30–September 2, 2009. pp. 83-92. ASME. https://doi.org/10.1115/DETC2009-86617
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