Observatorio de I+D+i UPM

Descripción
Ten years ago, an original semi-recursive formulation for the dynamic simulation of large-scale multibody systems was presented by García de Jalón et al. By taking advantage of the cut-joint and rod-removal techniques through a double-step velocity transformation, this formulation proved to be remarkably efficient. The rod-removal technique was employed, primarily, to reduce the number of differential and constraint equations. As a result, inertia and external forces were applied to neighboring bodies. Those inertia forces depended on unknown accelerations, a fact that contributed to the complexity of the system inertia matrix. In search of performance improvement, this paper presents an approximation of rod-related inertia forces by using accelerations from previous time-steps. Additionally, a mass matrix partition is carried out to preserve the accuracy of the original formulation. Three extrapolation methods, namely, point, linear Lagrange and quadratic Lagrange extrapolation methods, are introduced to evaluate the unknown rod-related inertia forces. In order to assess the computational efficiency and solution accuracy of the presented approach, a general-purpose MATLAB/C/C++ simulation code is implemented. A 15-DOF, 12-rod sedan vehicle model with MacPherson strut and multi-link suspension systems is modeled, simulated and analyzed.
Internacional	Si
JCR del ISI	Si
Título de la revista	Multibody Syst Dyn
ISSN	1384-5640
Factor de impacto JCR	1,739
Información de impacto	Datos JCR del año 2014
Volumen
DOI	10.1007/s11044-016-9520-0
Número de revista
Desde la página	1
Hasta la página	20
Mes	ABRIL
Ranking

Esta actividad pertenece a memorias de investigación

• Autor: Yongjun Pan (UPM)
• Autor: Alfonso Callejo (Centre for Intelligent Machines, McGill University, Montreal, Quebec H3A 0E9, Canada)
• Autor: Jose Luis Bueno Lopez (UPM)
• Autor: Roger A. Wehage (Caterpillar Inc., Mossville, IL, USA)
• Autor: Francisco Javier Garcia de Jalon De la Fuente (UPM)

• Creador: Grupo de Investigación: Grupo de Inv. en Seguridad e Impacto Medioambiental de Vehículos y Transportes (GIVET)
• Centro o Instituto I+D+i: Instituto Universitario de Investigación del Automóvil (INSIA)
• Departamento: Matemáticas del Área Industrial