Optimal design of rigid-flexible multibody systems with application to vehicle technology

J. M. P. Dias ^[1] ; M. S. Pereira ^[1]
1. [1] IDMEC - Instituto de Mecánica - Pólo IST Instituto Superior Técnico. Lisboa, Portugal.
Localización: Métodos Numéricos en Ingeniería: [Comunicaciones presentadas al IV Congreso de Métodos Numéricos en Ingeniería celebrado en Sevilla durante los días 7-10 de Junio de 1999] / R. Abascal (ed. lit.), José Domínguez Abascal (ed. lit.) , G. Bugeda (ed. lit.), 1999, ISBN 84-89925-45-3
Idioma: español
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Resumen
- Based on a rigid-flexible multibody dynamics formulation, a moving frame approach is used to describe the kinematics of the deformable bodies where the large rigid motion is described using Cartesian coordinates and the flexibility is introduced using the finite element method. A general methodology for chassis and structural components design is presented. This methodology links the simulation code with optimization algorithms and sensitivities obtained by the direct differentiation method and finite difference techniques are used. An example of a 3D vehicle is presented where the chassis is designed to satisfy the dynamic stress constraints with the objective to reduce the mass of the vehicle.