NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The sensitivity of identified modal parameters to sensor placement errors and construction tolerancesThis paper examines the sensitivity of experimentally measured modal frequencies and mode shapes to structural reassembly and sensor placement errors on a suspended three-bay truss. The statistical variations of identified mode shapes and frequencies are measured by repeated experiments. Both parameters are shown to vary measurably more with reassembly than sensor placement errors. Also, a directional stiffness in the truss joints was found to cause a parameter dependence on member orientation during reconstruction.
Document ID
19930050098
Document Type
Conference Paper
Authors
Hinkle, Jason (NASA Headquarters Washington, DC United States)
Bullock, Steven J. (Colorado Univ. Boulder, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: AIAA(ASME)ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 34th and AIAA/ASME Adaptive Structures Forum, La Jolla, CA, Apr. 19-22, 1993, Technical Papers. Pt. 4 (A93-33876 1
Subject Category
STRUCTURAL MECHANICS
Report/Patent Number
AIAA PAPER 93-1561
Funding Number(s)
CONTRACT_GRANT: NAGW-1388
Distribution Limits
Public
Copyright
Other

Related Records

IDRelationTitle19930049879Analytic PrimaryAIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 34th and AIAA/ASME Adaptive Structures Forum, La Jolla, CA, Apr. 19-22, 1993, Technical Papers. Pts. 1-6