NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Probabilistic Assessment of National Wind TunnelA preliminary probabilistic structural assessment of the critical section of National Wind Tunnel (NWT) is performed using NESSUS (Numerical Evaluation of Stochastic Structures Under Stress) computer code. Thereby, the capabilities of NESSUS code have been demonstrated to address reliability issues of the NWT. Uncertainties in the geometry, material properties, loads and stiffener location on the NWT are considered to perform the reliability assessment. Probabilistic stress, frequency, buckling, fatigue and proof load analyses are performed. These analyses cover the major global and some local design requirements. Based on the assumed uncertainties, the results reveal the assurance of minimum 0.999 reliability for the NWT. Preliminary life prediction analysis results show that the life of the NWT is governed by the fatigue of welds. Also, reliability based proof test assessment is performed.
Document ID
19970010381
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Shah, A. R. (NYMA, Inc. Brook Park, OH United States)
Shiao, M. (NYMA, Inc. Brook Park, OH United States)
Chamis, C. C. (NASA Lewis Research Center Cleveland, OH United States)
Date Acquired
September 6, 2013
Publication Date
November 1, 1996
Subject Category
Structural Mechanics
Report/Patent Number
E-10374
NASA-TM-107296
NAS 1.15:107296
Accession Number
97N15602
Funding Number(s)
CONTRACT_GRANT: NAS3-27186
PROJECT: RTOP 505-63-5B
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