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

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Test Program – Coal Car Top chord strains Approached buckling limit i in body bounce motions Bending strains not as significant Highest stress at speeds above 45 mph Will evaluate coupler force link to high strains ® © TTCI/AAR, 2010, Filename p28
Test Program – Coal Car Large top chord stresses were recorded Top Chord Location on Route Test Speed (mph) Compressive Axial Stress Bending Stress Vertical Wheel Force Clinton Sub., MP 148.13, 13 Right Switch Columbus Sub., MP 86.49, Bridge Columbus Sub., MP 88.23, Culvert South Morrill Sub., MP 62.89, Road Crossing Clinton Sub, MP 159.31 - culvert 51.8 20,820 2,320 76,710710 49.5 18,210 2,190 73,460 50.00 17,520 2,030 68,230 50.0 16,270 1,680 56,560 43.1 15,960 2,150 65,450 Calculated Critical Compressive Stress for Buckling – 22,300 psi. Maximum compressive stress 93% of calculated limit ® © TTCI/AAR, 2010, Filename p29
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: Test Program - Coal Car Phase I Tes
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 and 40: Results for Intermodal Car Testing
Page 41 and 42: Testing and Simulations for the Dev
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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