Automated Failure Boundary Mapping

Demo files from July 21, 2009 webinar

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: Genetic Algorithm & Direct Search Tlbx; Optimization Toolbox; SimMechanics; Simulink; Statistics Toolbox
• MATLAB release: MATLAB 7.8 (R2009a)
• Published M Files: Failure Boundary Identification, Flutter Model Demo

Other Files

BACTwing.jpg,
boundaryArea.m,
boundaryMapping.m,
boundarySearch.m,
findPeak.m,
Flutter.mdl,
Flutter_sfun.mexw32,
flutterLimitFunction.m,
getParamNames.m,
html/boundaryMapping.png,
html/boundaryMapping_01.png,
html/boundaryMapping_02.png,
html/boundaryMapping_03.png,
html/boundaryMapping_04.png,
html/boundaryMapping_05.png,
html/boundaryMapping_06.png,
html/boundaryMapping_07.png,
html/boundaryMapping_08.png,
html/statOptimDesign.png,
html/statOptimDesign_01.png,
html/statOptimDesign_02.png,
html/statOptimDesign_03.png,
html/statOptimDesign_04.png,
html/statOptimDesign_05.png,
html/statOptimDesign_06.png,
html/statOptimDesign_07.png,
html/statOptimDesign_08.png,
html/statOptimDesign_09.png,
html/statOptimDesign_10.png,
license.txt,
make2plots.m,
make3plots.m,
peaksLimitFunction.m,
README.txt,
runModel.m,
saGradientMethod.m,
setup.m,
slides.pdf,
slprj/_sfprj/Flutter/_self/sfun/info/binfo.mat,
slprj/_sfprj/Flutter/_self/sfun/src/c1_Flutter.c,
slprj/_sfprj/Flutter/_self/sfun/src/c1_Flutter.h,
slprj/_sfprj/Flutter/_self/sfun/src/c1_Flutter.obj,
slprj/_sfprj/Flutter/_self/sfun/src/Flutter_sfun.bat,
slprj/_sfprj/Flutter/_self/sfun/src/Flutter_sfun.c,
slprj/_sfprj/Flutter/_self/sfun/src/Flutter_sfun.exp,
slprj/_sfprj/Flutter/_self/sfun/src/Flutter_sfun.h,
slprj/_sfprj/Flutter/_self/sfun/src/Flutter_sfun.lib,
slprj/_sfprj/Flutter/_self/sfun/src/Flutter_sfun.lmk,
slprj/_sfprj/Flutter/_self/sfun/src/Flutter_sfun.lmko,
slprj/_sfprj/Flutter/_self/sfun/src/Flutter_sfun.obj,
slprj/_sfprj/Flutter/_self/sfun/src/Flutter_sfun_debug_macros.h,
slprj/_sfprj/Flutter/_self/sfun/src/Flutter_sfun_registry.c,
slprj/_sfprj/Flutter/_self/sfun/src/Flutter_sfun_registry.obj,
slprj/_sfprj/Flutter/_self/sfun/src/lccstub.obj,
slprj/_sfprj/Flutter/_self/sfun/src/rtwtypes.h,
slprj/_sfprj/Flutter/_self/sfun/src/rtwtypeschksum.mat,
statOptimDesign.m,
updateModelParams.m,
vrImage.jpg,
wing2.wrl

[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.