Efficient and accurate modeling of rigid rods

Pan, Yongjun; Callejo, Alfonso; Bueno López, José Luis; Wehage, Roger A. y García de Jalón de la Fuente, Francisco Javier (2016). Efficient and accurate modeling of rigid rods. "Multibody System Dynamics", v. Online ; pp. 1-20. ISSN 1384-5640. https://doi.org/10.1007/s11044-016-9520-0.

Descripción

Título: Efficient and accurate modeling of rigid rods
Autor/es:
  • Pan, Yongjun
  • Callejo, Alfonso
  • Bueno López, José Luis
  • Wehage, Roger A.
  • García de Jalón de la Fuente, Francisco Javier
Tipo de Documento: Artículo
Título de Revista/Publicación: Multibody System Dynamics
Fecha: 26 Abril 2016
Volumen: Online
Materias:
Palabras Clave Informales: Multibody dynamics, Semi-recursive Maggi’s formulation, Rod-removal technique, Polynomial extrapolation, Vehicle dynamics
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Otro
Grupo Investigación UPM: Computational Mechanics Group, INSIA
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Proyectos asociados

TipoCódigoAcrónimoResponsableTítulo
Gobierno de EspañaTRA2009-14513-C02-01OPTIVIRTESTSin especificarSin especificar
Gobierno de EspañaTRA2012-38826-C02-01DOPTCARRSin especificarSin especificar

Más información

ID de Registro: 43210
Identificador DC: http://oa.upm.es/43210/
Identificador OAI: oai:oa.upm.es:43210
Identificador DOI: 10.1007/s11044-016-9520-0
URL Oficial: http://link.springer.com/article/10.1007/s11044-016-9520-0
Depositado por: Memoria Investigacion
Depositado el: 08 Sep 2016 15:00
Ultima Modificación: 26 Abr 2017 22:30
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