Simulation of spatial multibody systems with friction

• Edward J. Haug ^[1]
  1. [1] University of Iowa

     University of Iowa

     City of Iowa City, Estados Unidos

     
• Localización: Mechanics based design of structures and machines, ISSN 1539-7734, Vol. 46, Nº. 3, 2018, págs. 347-375
• Idioma: inglés
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• Resumen

  • A formulation for modeling and simulation of friction eects in spatial multibody systems is presented. Constraint reaction forces on rigid bodies that are connected by joints that support friction are derived as functions of Lagrange multipliers, using D’Alembert’s principle. Friction forces acting on bodies are calculated as a function of joint geometry, constraint reaction forces that are functions of Lagrange multipliers, and relative velocities at constraint contact points that are determined by system kinematics. Friction forces are implemented in index 0 dierential-algebraic equations of motion that are solved numerically using explicit and implicit numerical integration methods. Spatial examples are presented, yielding accurate results and demonstrating that the systems are not sti, even in the presence of friction and stictio