Combined semi-recursive formulation and lumped fluid method for monolithic simulation of multibody and hydraulic dynamics
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The use of multibody simulation tools allows complex machinery to be described in detail while still providing a solution for the system in real time. As mechanical components are often accompanied by other dynamical systems, such as hydraulics, description of each subsystem is required to fully describe the dynamics of complex machinery. A potential candidate for solving the multiphysics problem at hand is known as the unified or monolithic approach. This strongly coupled approach yields a single set of equations to be integrated and, compared to co-simulation and co-integration approaches, a relatively simple integration procedure. In this paper, a monolithic formulation for a combined simulation of multibody and hydraulic dynamics using an efficient semi-recursive formulation and the lumped fluid method is introduced. The results indicate that the proposed method shows potential for efficient simulation of combined multibody and hydraulic problems. The robustness of the multibody method is maintained when combined with the hydraulic dynamics description and higher efficiency is observed than with an equivalent global approach.
KeywordsMultibody system dynamics Hydraulic modelling Real-time simulation Coupled simulation
The authors acknowledge support of this project by SIM Platform (www.lut.fi/sim) at Lappeenranta University of Technology.
- 1.Baharudin, M.E., Rouvinen, A., Korkealaakso, P., Mikkola, A.: Real-time multibody application for tree harvester truck simulator. Proc. Inst. Mech. Eng., Proc., Part K, J. Multi-Body Dyn. 228(2), 182–198 (2014) Google Scholar
- 18.de Jalón, J.G., Hidalgo, A., Callejo, A.: Improved semi-recursive formulation for the dynamic simulation of multibody systems (2011) Google Scholar
- 20.Naya, M., Cuadrado, J., Dopico, D., Lugris, U.: An efficient unified method for the combined simulation of multibody and hydraulic dynamics: comparison with simplified and co-integration approaches. Arch. Mech. Eng. 58(2), 223–243 (2011). https://doi.org/10.2478/v10180-011-0016-4 CrossRefGoogle Scholar
- 21.Nokka, J., Montonen, J.H., Bin Baharudin, E., Immonen, P., Rouvinen, A., Laurila, L., Lindh, T., Mikkola, A., Sopanen, J., Pyrhönen, J.: Multi-body simulation based development environment for hybrid working machines. Int. Rev. Model. Simul. 8(4), 466–476 (2015) Google Scholar
- 22.Rodríguez, J.I., Jiménez, J.M., Funes, F.J., García de Jalón, J.: Recursive and residual algorithms for the efficient numerical integration of multi-body systems. Multibody Syst. Dyn. 11(4), 295–320 (2004). https://doi.org/10.1023/B:MUBO.0000040798.77064.bc MathSciNetCrossRefzbMATHGoogle Scholar
- 26.Watton, J.: Fluid Power Systems: Modeling, Simulation, Analog and Microcomputer Control. Prentice Hall, New York (1989) Google Scholar