NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Verification of Orthogrid Finite Element Modeling TechniquesThe stress analysis of orthogrid structures, specifically with I-beam sections, is regularly performed using finite elements. Various modeling techniques are often used to simplify the modeling process but still adequately capture the actual hardware behavior. The accuracy of such 'Oshort cutso' is sometimes in question. This report compares three modeling techniques to actual test results from a loaded orthogrid panel. The finite element models include a beam, shell, and mixed beam and shell element model. Results show that the shell element model performs the best, but that the simpler beam and beam and shell element models provide reasonable to conservative results for a stress analysis. When deflection and stiffness is critical, it is important to capture the effect of the orthogrid nodes in the model.
Document ID
19970001271
Acquisition Source
Marshall Space Flight Center
Document Type
Technical Memorandum (TM)
Authors
Steeve, B. E. (NASA Marshall Space Flight Center Huntsville, AL United States)
Date Acquired
September 6, 2013
Publication Date
October 1, 1996
Subject Category
Structural Mechanics
Report/Patent Number
NAS 1.15:108519
NASA-TM-108519
Report Number: NAS 1.15:108519
Report Number: NASA-TM-108519
Accession Number
97N11105
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