Uncertainty Analysis For Fluid-Structure Interaction Simulations Using Information Grids

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-04-M-0178
Agency Tracking Number: N041-137-0133
Amount: $70,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2004
Solitcitation Year: 2004
Solitcitation Topic Code: N04-137
Solitcitation Number: 2004.1
Small Business Information
RESEARCHSOUTH, INC.
555 Sparkman Dr., Suite 1612, Huntsville, AL, 35816
Duns: 928516442
Hubzone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Lawrence Spradley
 Vice President
 (256) 721-1769
 lws@hiwaay.net
Business Contact
 Lawrence Spradley
Title: Vice President
Phone: (256) 721-1769
Email: lws@hiwaay.net
Research Institution
N/A
Abstract
ResearchSouth will develop a software product for error estimation and uncertainty analysis of computational mechanics code predictions. We will develop methodologies for at least the following methods: interval analysis, sensitivity derivatives, Monte Carlo methods, moment methods and polynomial chaos. An existing and proven fluid-structure interaction code will be used to model many design points by running cases in parallel on information grids. The design points will be set up automatically by perturbation from nominal conditions. This large database will be reduced through an uncertainty analysis using both probabilistic and deterministic uncertainty methods. We will compute test cases for validation including a fluid-structure interaction case on a generic ship hull and compute error bands on the computations. Based on the computational results, the most promising methodologies will be selected for implementation. The Phase I plan is to continue our on-going literature survey on recent developments in stochastic finite elements, formulate the deterministic and probabilistic models for uncertainty, code a new module to implement these formulations, use our existing fluid-structure interaction software for testing the algorithms, validate the solutions, reach conclusions on feasibility and accuracy, formulate a plan for implementing them into commercial codes, and document the Phase I project.

* information listed above is at the time of submission.

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