An index 0 Differential-Algebraic equation formulation for multibody dynamics: Holonomic constraints

• Edward 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. 45, Nº. 4, 2017, págs. 479-506
• Idioma: inglés
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• Resumen

  • The Lagrange multiplier form of index 3 differential-algebraic equations of motion for holonomically constrained multibody systems is transformed using tangent space generalized coordinates to an index 0 form that is equivalent to an ordinary differential equation. The index 0 formulation includes embedded tolerances that assure satisfaction of position, velocity, and acceleration constraints and is solved using established explicit and implicit numerical integration methods. Numerical experiments with two spatial applications show that the formulation accurately satisfies constraints, preserves invariants due to conservation laws, and behaves as if applied to an ordinary differential equation.