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Accelerate Development

Accelerate Development. Use of Robust Design ™ by MSC Software for Automatic Aerospace Design, Performance Optimization, and Accelerating Engineering Development. Fred Perkins Federal Engineering Associates McLean, Virginia. Better Results - Faster.

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Accelerate Development

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  1. Accelerate Development Use of Robust Design™ by MSC Software for Automatic Aerospace Design, Performance Optimization, and Accelerating Engineering Development Fred Perkins Federal Engineering Associates McLean, Virginia 703-506-9212

  2. Better Results - Faster • Helps reveal real high performance design drivers – even to rocket scientists • Improves the focus of FEM, reducing analysis time and accelerating engineering development, reducing cost and time to achieve superior results • Helps eliminate unknown unknowns • Improves FEA validation while enhancing the value of test data 703-506-9212

  3. Candidate Satellite Design Example 703-506-9212

  4. Decision Maps - Structured Information Inputs Outputs Statics Eigenvalues Buckling Critical output • Unlimited Model Sophistication • Unlimited Coupled Outputs (for supported solvers) 703-506-9212

  5. How Do Full Rage of Inputs/Outputs Relate? 703-506-9212

  6. How Stable is Your Design Point? 703-506-9212

  7. What Really Drives Your Results? 703-506-9212

  8. FEA Validation by Better Test Data Use • Modern optical and other experimental mechanics measurement systems produce large datasets of high precision static and dynamic data • Robust Design™ promises a path to automation of many FEA validation and optimization tasks, leading to better models and faster results. 703-506-9212

  9. Current Practice Better Results – Accelerate Development Current Practice Design Limited Bandwidth Data to Design - CMM - Dial Indicators - Fit up trials - Limited validation of CAD baseline vs. as-built - Difficult to acquire, slow to transfer Integrated Surface Contour CAD part/assy. files Integrated CAD/CAE Native CAD External Shape Data - Continuous measurement points - Contour, flatness, curvature measurement - Quickly subtract as-built from as-modeled part - Fast acquisition, fully integrated Experimental Analysis Mechanics/ FEA Strain/Stress/Modal Data Metrology Full-field Strain/Vibration Extensive Engineering Database Limited Bandwidth Data to Analysis - 10's thousands of strain/vibration measurements - 10's of strain gages - Data overlaid on picture of objects - 10's of accelerometers - Section between features for point-to-point comparisons - Severe instrumentation problems in high gradient areas - No gaps between sensors - No visibility between sensors - Fast and easy data acquisition - Difficult and slow to instrument and acquire data - No confusion about results - Ambiguities in interpretation 703-506-9212

  10. Real World - Satellite Dispenser Courtesy EADS-CASA 703-506-9212

  11. Move Mountains to the Data 1 2 Target location of meta-model (mean of tests) Improved meta-model 3 4 703-506-9212

  12. Almost 20% Saved in Mass to Orbit! INITIAL CONFIGURATION TUNED CONFIGURATION (+15,+45,-45,-15) (0,+15,+45,-45,-15) (0,+15,+45,-45,-15)x2 (+15,+45,-45,-15) (0,+15,-15,0) (0,+15,+45,-45,-15)x4 (+15,+45,-45,-15) (0,+15,-15,0)3 (0,+15,+45,-45,-15)x6 (+15,+45,-45,-15) (0,+15,-15,0)5 (+15,+45,-45,-15) (0,+15,-15,0)3 (0,+45,-45,0)4 (0,+15,+45,-45,-15)x10 (+15,+45,-45,-15) (0,+15,-15,0)3 (0,+45,-45,0)6 (0,+15,+45,-45,-15)x12 (03,+153,+302,+452,+602,+75, -75,-602,-452,-302,-153,03)x2 (06,+153,+303,+452,+602,+753, -753,-602,-452,-302,-153)x2 Mass= 436 kg f1= 9.7 Hz Mass= 362 kg f1= 9.47 Hz Reliability > 0.999 Courtesy EADS-CASA 703-506-9212

  13. This Will Be On The Candidate Design Quiz! We’re all rocket scientists here! A quick test! – What is the principal source of Von Mises stress in our candidate satellite design during launch? 703-506-9212

  14. Model Complexity Can Obscure Drivers 703-506-9212

  15. Target Results Based on Key Variables 703-506-9212

  16. Automated Optimization with Full Complexity Original Design Point Targeted Optimization 703-506-9212

  17. Accelerate Engineering Development • Robust Design™ enhances the value of your MSC NASTRAN FEM - spend less time and money achieving superior results • Verify stability and robustness of high performance design solutions • Reveal unknown unknowns, especially when modifying designs • Increase value of experimental data for FEA validation and optimization 703-506-9212

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