Actions for Nonlinear Dynamic Analysis of Deploying Flexible Space Booms

Email RIS file
Bookmark
Report an Issue

Nonlinear Dynamic Analysis of Deploying Flexible Space Booms

Author
Housner, J. M.
Published
Sep 1, 1985.
Physical Description
1 electronic document
Additional Creators
Mcgowan, P. E.
Online Version

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
Summary
A fundamental investigation of the planar deployment and lock-up of two flexible boom type appendages which have attached tip masses and are connected to a central rigid body through a rotational spring is presented. Nondimensional parameters are identified and it is shown that, in general, the solution depends only on two mass ratios and one nondimensional stiffness parameter. Results are presented for boom tip deflections, deployment time and root moments at lock-up. A threshold value of the nondimensional stiffness parameter is identified beyond which boom deflections become large. Also, a thorough examination of the effect of nonlinear terms in the equations governing the deployment phase is performed. Nonlinear terms in the deployment equations due to kinematics and structural deformation are required to predict more accurately boom deflections, but retention of an inconsistent set of nonlinear terms leads to erroneous results. In particular, retaining nonlinear kinematic terms while neglecting nonlinear structural terms can produce inaccurate results even below the threshold stiffness value.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19860019509.
Accession ID: 86N28981.
NASA-TM-87617.
NAS 1.15:87617.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15424287