Flexible multibody dynamics is often approached in case of small flexible deformations by means of the finite-element modelling method in component mode synthesis techniques. In these approaches the size of the motion equations can be high or the general description can be poor. In this paper a linearly independent set of shape functions is introduced to continuously model the flexible components of local reference displacements as a superposition of shape functions; a novel formulation of the flexible properties of beam-like components then follows, with a reduced size motion equation set and no restriction in the geometrical model. All of the modelling aspects, such as kinematics, inertia and stiffness distribution and generalised forces, are extensively discussed. Test cases prove the effectiveness of the proposed approach.
G. Catania, A. Zanarini (2017). A MESHLESS APPROACH IN FLEXIBLE MULTIBODY SYSTEM MODELLING.
A MESHLESS APPROACH IN FLEXIBLE MULTIBODY SYSTEM MODELLING
CATANIA, GIUSEPPE;ZANARINI, ALESSANDRO
2017
Abstract
Flexible multibody dynamics is often approached in case of small flexible deformations by means of the finite-element modelling method in component mode synthesis techniques. In these approaches the size of the motion equations can be high or the general description can be poor. In this paper a linearly independent set of shape functions is introduced to continuously model the flexible components of local reference displacements as a superposition of shape functions; a novel formulation of the flexible properties of beam-like components then follows, with a reduced size motion equation set and no restriction in the geometrical model. All of the modelling aspects, such as kinematics, inertia and stiffness distribution and generalised forces, are extensively discussed. Test cases prove the effectiveness of the proposed approach.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
