Ares I-X is a pathfinder vehicle concept under development by NASA to demonstrate a new class of launch vehicles. Although this vehicle is essentially a shell of what the Ares I vehicle will be, efforts are underway to model and calibrate the analytical models before its maiden flight. Work reported in this document will summarize the model calibration approach used including uncertainty quantification of vehicle responses and the use of non-conventional boundary conditions during component testing. Since finite element modeling is the primary modeling tool, the calibration process uses these models, often developed by different groups, to assess model deficiencies and to update parameters to reconcile test with predictions. Data for two major component tests and the flight vehicle are presented along with the calibration results. For calibration, sensitivity analysis is conducted using Analysis of Variance (ANOVA). To reduce the computational burden associated with ANOVA calculations, response surface models are used in lieu of computationally intensive finite element solutions. From the sensitivity studies, parameter importance is assessed as a function of frequency. In addition, the work presents an approach to evaluate the probability that a parameter set exists to reconcile test with analysis. Comparisons of pretest predictions of frequency response uncertainty bounds with measured data, results from the variance-based sensitivity analysis, and results from component test models with calibrated boundary stiffness models are all presented.
Finite Element Model Calibration Approach for Area I-X
57th JANNAF Propulsion Meeting/7th Modeling and Simulation Subcommittee/5th Liquid Propulsion Subcommittee/4th Spacecraft Propulsion Subcommittee Joint Meeting ; 2010 ; Colorado Springs, CO, United States
2010-05-03
Conference paper
No indication
English
Finite element model calibration of a nonlinear perforated plate
Online Contents | 2017
|Verification of Box Test Model and Calibration of Finite Element Model
Transportation Research Record | 2011
|Calibration and Validation of a Car Subframe Finite Element Model Using Frequency Responses
British Library Conference Proceedings | 2015
|Development and Calibration of the Large Omnidirectional Child ATD Head Finite Element Model
SAE Technical Papers | 2021
|Finite-element model calibration of a railway vehicle based on experimental modal parameters
Taylor & Francis Verlag | 2013
|