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+. =. Thermal Modes for the Optimisation of Transient Thermo-Mechanics. Johann Dugge – MSc Presentation – 09 November 2012. Prof.dr.ir. A. van Keulen (TU Delft) Ir. M. Koevoets (ASML ) Ir. E.C. Hooijkamp (TU Delft) Dr.ir. R. Delfos (TU Delft). Presentation Outline. Motivation
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+ = Thermal Modes for the Optimisationof Transient Thermo-Mechanics Johann Dugge – MSc Presentation – 09 November 2012 Prof.dr.ir. A. van Keulen (TU Delft) Ir. M. Koevoets (ASML) Ir. E.C. Hooijkamp (TU Delft) Dr.ir. R. Delfos (TU Delft)
Presentation Outline • Motivation • Research Question • Cooling Optimisation • Conclusion
Nano-Scale Features in Electronics 20 nm Images: ASML, etech.com, Intel, Wikipedia
Cooling Uniform
Cooling Optimised
Optimisation Process Propose No Sufficient? Yes START Test END Smart way to propose new designs?
Research Question How can thermal modes be used to optimise cooling in a transient thermo-mechanical system?
Thermal Modes Temperature Field Deformation
Thermal Modes Temperature Field Deformation
Modal Significance MeasuresExcitation = 1 0.7 0.0 + +
Modal Significance MeasuresObservability (in the objective) O=0.01 O=-5
Modal Significance MeasuresTime-objective Relevance time 0.5 s r=0.001 r=50
Modal Significance MeasureTotal Significance Time-objective Relevance Excitation Observability
Conclusion How can thermal modes be used to optimise cooling in a transient thermo-mechanical system? • Modal reductiontechnique. • Potentially low-cost sensitivity indicators. • Investigate heuristics. • Use in modal sensitivity analysis. • Reduced set of design variables.
Next Steps • Sensitivity indicators • (systematic experiments, analytical solution) • Use in eigensensitivity analysis • Modal reduction • Estimate error from objective significance measures?