Implementation of 3-D isoparametric finite elements on supercomputer for the formulation of recursive dynamical equations of multi-body systemsA computational algorithmic procedure is developed and implemented for the dynamic analysis of a multibody system with rigid/flexible interconnected bodies. The algorithm takes into consideration the large rotation/translation and small elastic deformations associated with the rigid-body degrees of freedom and the flexibility of the bodies in the system respectively. Versatile three-dimensional isoparametric brick elements are employed for the modeling of the geometric configurations of the bodies. The formulation of the recursive dynamical equations of motion is based on the recursive Kane's equations, strain energy concepts, and the techniques of component mode synthesis. In order to minimize CPU-intensive matrix multiplication operations and speed up the execution process, the concepts of indexed arrays is utilized in the formulation of the equations of motion. A spin-up maneuver of a space robot with three flexible links carrying a solar panel is used as an illustrative example.
Document ID
19910065145
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Shareef, N. H. (Illinois Univ. Chicago, IL, United States)
Amirouche, F. M. L. (Illinois, University Chicago, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1991
Subject Category
Mechanical Engineering
Report/Patent Number
AIAA PAPER 91-2826
Meeting Information
Meeting: AIAA Guidance, Navigation and Control Conference