Multibody simulation

Multibody simulation (MBS) is a method of numerical simulation in which multibody systems are composed of various rigid or elastic bodies. Connections between the bodies can be modeled with kinematic constraints (such as joints) or force elements (such as spring dampers). Unilateral constraints and Coulomb-friction can also be used to model frictional contacts between bodies.[1] Multibody simulation is a useful tool for conducting motion analysis. It is often used during product development to evaluate characteristics of comfort, safety, and performance.[2] For example, multibody simulation has been widely used since the 1990s as a component of automotive suspension design.[3] It can also be used to study issues of biomechanics, with applications including sports medicine, osteopathy, and human-machine interaction.[4][5][6]

The heart of any multibody simulation software program is the solver.The solver is a set of computation algorithms that solve equations of motion. Types of components that can be studied through multibody simulation range from electronic control systems to noise, vibration and harshness.[7] Complex models such as engines are composed of individually designed components, e.g. pistons/crankshafts.[8]

References

  1. ↑ Schindler, Thorsten. "Multi-Body Simulation". Courses: Technische Universität München. Technische Universität München. Retrieved 20 August 2013.
  2. ↑ Larsson, Tobias. "Multibody Dynamic Simulation in Product Development" (PDF). Division of Computer Aided Design Department of Mechanical Engineering Luleå University of Technology. Luleå University of Technology. Retrieved 29 August 2013.
  3. ↑ Blundell, Mike and Damian Harty (2004). The Multibody Systems Approach to Vehicle Dynamics. Oxford, MA: Elsevier Butterworth-Heinemann. ISBN 0750651121.
  4. ↑ Al Nazar, R.; T. Rantalainen; A. Heinonen; H. Sievänend; A. Mikkola (2008). "Flexible multibody simulation approach in the analysis of tibial strain during walking". Journal of Biomechanics. 41 (5): 1036–1043. doi:10.1016/j.jbiomech.2007.12.002. PMID 18191865.
  5. ↑ O’Riordain, K.; P.M. Thomas; J.P. Phillips; M.D. Gilchrist (August 2003). "Reconstruction of real world head injury accidents resulting from falls using multibody dynamics". Clinical Biomechanics. 18 (7): 590–600. doi:10.1016/S0268-0033(03)00111-6. PMID 12880706.
  6. ↑ "Industrial Sectors: Biomechanics". SIMPACK. SIMPACK AG. Retrieved 27 August 2013.
  7. ↑ "Definition of MultiBody Dynamics Simulation". Function Bay: Recurdyn. Retrieved 20 August 2013.
  8. ↑ "SimMechanics Introduction". MathWorks. Retrieved 20 August 2013.
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