AAR/ARCI Freight Car Fatigue Task Force II - Marts-rail.org

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Testing and Simulations for the Development of New AAR Rail Car Fatigue Design Spectra Data Validation The data collected through these tests, while using technically rigorous testing methods, must be validated prior to being required for freight car design. In the case of each car type, steps were taken to: • Check the realism of predicted fatigue life of various welded joints in the design (of each car type) • Check the lives of members where owners/builders had experienced shortened fatigue life in the field • Evaluate differences in calculation methodology to determine appropriate industry techniques ® © TTCI/AAR, 2010, Filename p40
Testing and Simulations for the Development of New AAR Rail Car Fatigue Design Spectra Methodology Regarding the issue of how to treat the S–N diagram in the application of Miner’s Rule of Accumulated Damage (reference AAR MSRP M-1001, Chapter VII), the figure below shows the two portions of the curve for a typical welded joint. ® © TTCI/AAR, 2010, Filename p41
Page 1 and 2: AAR/ARCI Freight Car Fatigue Task F
Page 3 and 4: Today’s Presentation: ti ♦Why U
Page 5 and 6: Why Updating is Needed Current Guid
Page 7 and 8: Why Updating is Needed Fatigue fail
Page 9 and 10: Why Updating is Needed The pathway
Page 11 and 12: Approach Taken / This Task Force’
Page 13 and 14: Revised Chapter VII Over-the-road t
Page 15 and 16: Today’s Presentation: ♦Why Upda
Page 17 and 18: Test Program ♦These tests are fun
Page 19 and 20: Test Program Test Route Selection
Page 21 and 22: Test Program Chapter VII Updating a
Page 23 and 24: Test Program - Coal Car FCFTF coal
Page 25 and 26: Test Program - Coal Car MEASUREMENT
Page 27 and 28: Test Program - Coal Car Phase I Tes
Page 29 and 30: Test Program - Coal Car Large top c
Page 31 and 32: Test Program - Coal Car Bolster an
Page 33 and 34: Test Program - Intermodal Car 5-Uni
Page 35 and 36: Test Program - Intermodal Car ® ©
Page 37 and 38: Results for Intermodal Car Testing
Page 39: Results for Intermodal Car Testing
Page 43 and 44: Testing and Simulations for the Dev
Page 45 and 46: Status: Chapter 7, Section C, Part

AAR/ARCI Freight Car Fatigue Task Force II - Marts-rail.org

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