A Computational Procedure for Multibody Systems Including Flexible Beam Dynamics

By: Nasa, National Aeronautics and Space Adm

A computational procedure suitable for the solution of equations of motions for flexible multibody systems has been developed. The flexible beams are modeled using a fully nonlinear theory which accounts for both finite rotations and large deformations. The present formulation incorporates physical measures of conjugate Cauchy stress and covariant strain increments. As a consequence, the beam model can easily be interfaced with real-time strain measurements and feedback control systems. A distinct feature of the present work is the computational preservation of total energy for undamped systems; this is obtained via an objective strain increment/stress update procedure combined with an energy-conserving time integration algorithm which contains an accurate update of angular orientations. The procedure is demonstrated via several example problems. Downer, J. D. and Park, K. C. and Chiou, J. C. Unspecified Center NAG1-756...

• Format: Paperback
• Language: English
• ISBN: 1729359477
• ISBN13: 9781729359471
• Release Date: January 1
• Publisher: Independently Published
• Length: 46 Pages
• Weight: 0.29 lbs.
• Dimensions: 0.1" x 8.5" x 11.0"