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Code covered by the BSD License

Failure Boundary Identificati...
Flutter Model Demo
boundaryArea(Y,X,lb,ub,limitF... Copyright 2009 The MathWorks, Inc.
boundarySearch(X0,lb,ub,limit... BOUNDARYSEARCH searches a 2-D space to identify the failure region(s)
findPeak(t,y) Helper function to find peaks
flutterLimitFunction(X,factor... Calcualte Flutter Limit Function
getParamNames(modelNames, blo... Copyright 2009 The MathWorks, Inc.
make2plots(X1, Y1, Y2) CREATEFIGURE1(X1,Y1,Y2)
make3plots(X1, Y1, Y2, Y3) CREATEFIGURE1(X1,Y1,Y2,Y3)
peaksLimitFunction(X) Copyright 2009 The MathWorks, Inc.
runModel(ds) Copyright 2009 The MathWorks, Inc.
saGradientMethod(ds,varargin) [gradf, ds] = saGradientMethod(ds,paramNames,responseNames)
updateModelParams(ds) Copyright 2009 The MathWorks, Inc.
setup.m
Flutter
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Automated Failure Boundary Mapping

18 Aug 2009 (Updated 03 Sep 2009)

Demo files from July 21, 2009 webinar

File Information
Description	Describes development of a failure boundary mapping algorithm and application to a Airfoil Flutter model. Demo files from July 21, 2009 webinar "Using Statistics and Optimization to Support Design Activities" Webinar Link: http://www.mathworks.com/wbnr37485 Development of the failure boundary mapping algoirthm using MATLAB and Statistics Toolbox (Clustering) is described in boundaryMapping.m. The algorithm is capable of detecting and mapping failure regions that are disconnected (multiple failure regions). Application of the algorithm is applied to a Simulink model of flutter, orginially developed by Cole Stephens: http://www.mathworks.com/matlabcentral/fileexchange/3938
Acknowledgements	The author wishes to acknowledge the following in the creation of this submission: Flutter Analysis Model
Required Products	Global Optimization Toolbox Optimization Toolbox SimMechanics Simulink Statistics Toolbox
MATLAB release	MATLAB 7.8 (R2009a)

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Everyone's Tags	clustering, optimization, pattern search, sensitivity analysis, simulation, statistics
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Comments and Ratings (1)
25 Sep 2009	Etienne	Yo might want to try continuation methods. You can detect the instability directly and trace the boundaries directly. I guess your aim was to demonstrate how you can use different toolboxes together.

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03 Sep 2009	Added trademarks to published files.