NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Nonlinear Modeling of Joint Dominated StructuresThe development and verification of an accurate structural model of the nonlinear joint-dominated NASA Langley Mini-Mast truss are described. The approach is to characterize the structural behavior of the Mini-Mast joints and struts using a test configuration that can directly measure the struts' overall stiffness and damping properties, incorporate this data into the structural model using the residual force technique, and then compare the predicted response with empirical data taken by NASA/LaRC during the modal survey tests of the Mini-Mast. A new testing technique, referred to as 'link' testing, was developed and used to test prototype struts of the Mini-Masts. Appreciable nonlinearities including the free-play and hysteresis were demonstrated. Since static and dynamic tests performed on the Mini-Mast also exhibited behavior consistent with joints having free-play and hysteresis, nonlinear models of the Mini-Mast were constructed and analyzed. The Residual Force Technique was used to analyze the nonlinear model of the Mini-Mast having joint free-play and hysteresis.
Document ID
19900020107
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Chapman, J. M. (Boeing Aerospace Co. Seattle, WA, United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1990
Publication Information
Publisher: NASA
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
NASA-CR-4324
NAS 1.26:4324
Accession Number
90N29423
Funding Number(s)
PROJECT: RTOP 585-01-91-01
CONTRACT_GRANT: NAS1-18864
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available