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Application of Perturbation Methods to Improve Analytical Model Correlation with Test Data
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Sector:
Event:
Aerospace Meeting
Language:
English
Abstract
There are current and future requirements to develop a systematic method to update a mathematical model of a structure to more closely match the test data. The effort is cost effective since the number of reanalyses of a large structure will be reduced. Additionally, the mathematical model will more closely represent its test data.
This activity describes the positive and negative experiences in using a method published by C. W. White and an extension of the method. The results are based upon our understanding of the method as published.
Authors
Topic
Citation
Garba, J. and Wada, B., "Application of Perturbation Methods to Improve Analytical Model Correlation with Test Data," SAE Technical Paper 770959, 1977, https://doi.org/10.4271/770959.Also In
References
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- White C. W. Maytum B. D. “Eigensolution Sensitivity to Parametric Model Perturbations.” Martin Marietta Corporation, Denver Division Denver Colorado Technical Report R-75-48628-001 April 1975
- White C. W. “Dynamic Test Reflected Structural Model Methodology Report, Skylab Program.” Martin Marietta Corporation, Denver Division Denver, Colorado Payload Integration Technical Report ED-2002-1577 December 19 1972
- Chen J. C. Wada B. K. “Criteria for Analysis - Test Correlation of Structural Dynamic Systems.” Journal of Applied Mechanics 24 2 471 477 June 1975
- Chen J. C. Wada B. K. “Matrix Perturbation for Structural Dynamic Analysis.” 17th AIAA/ASME/SAE Structures, Structural Dynamics, and Materials Conference King of Prussia, Pennsylvania May 5-7 1976 August 1977
- Garba J. A. Wada B. K. Bamford R. Trubert M. R. “Evaluation of a Cost-Effective Loads Approach.” Journal of Spacecraft and Rockets 13 11 675 683 November 1976
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- Brownlee G. R. Day F. D. Garba J. A. “Analytical Prediction and Correlation for the Orbiter during the Viking Spacecraft Sinusoidal Vibration Test.” The Shock and Vibration Bulletin Naval Research Lab Washington, D. C. June 1975 37 57
- Bamford R. Wada B. K. Garba J. Chisholm J. “Dynamic Analyses of Large Structural Systems.” Synthesis of Vibrating Systems The American Society of Mechanical Engineers New York, N. Y. 1971
- Gayman W. H. “Fluid Dynamics Tests of the Viking Orbiter Propellant Tank Configuration.” Jet Propulsion Laboratory Pasadena, Calif. July 1975 JPL Internal Document
- Bamford R. M. Wada B. K. Gayman W. H. “Equivalent Spring Mass System for Normal Modes.” Jet Propulsion Laboratory Pasadena, California Technical Memorandum 33 380 February 15 1971
- Wada B. K. Bamford R. Garba J. A. “Equivalent Spring-Mass System: A Physical Interpretation.” The Shock and Vibration Bulletin Naval Research Lab Washington, D. C. January 1972 215 225
- Wada B. K. Garba J. A. Chen J. C. “Development and Correlation: Viking Orbiter Analytic Dynamic Model with Modal Test.” The Shock and Vibration Bulletin August 1977 125 164
- Collins J. D. Hart G. C. Hasselman T. K. Kennedy B. “Statistical Identification of Structures.” AIAA Journal 12 2 185 180 February 1974
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- Collins J. D. Young J. P. Kiefling L. A. “Methods and Applications of System Identification in Shock and Vibration.” System Identification of Vibrating Structures, Mathematical Models from Test Data American Society of Mechanical Engineers New York 1972