4.0 Structural Analysis

5.0 Determination of Fatigue LifeFatigue life calculationDifferent RadiusGroup modelsconsidered inanalysisMiner’s Ruleused tocalculateaccumulativeDamageFatigue lifein YearsLocation S-N Curve Beam No Node NoRadiusGroup 1Damage Ratio at each Radius GroupRadiusGroup 2RadiusGroup 3RadiusGroup 4AnnualDamageLife(years)Head end of 1st middle, upper W3 1 33 0.001004 0.006201 0.013513 0.004827 0.025852 38.68Foot end of 2nd middle, upper W3 935 421 0.001005 0.006491 0.011373 0.004829 0.023698 42.2Middle of 2nd middle, upper W3 937 438 0.000906 0.005853 0.011565 0.004399 0.022722 44.01Middle of 1st middle, upper W3 39 31 0.000922 0.005904 0.011044 0.004294 0.022164 45.12Head end of 2nd middle, upper W3 906 443 0.00091 0.005972 0.010593 0.004536 0.022011 45.43Middle of 2nd middle, upper W3 935 437 0.000885 0.005664 0.011046 0.004302 0.021897 45.67Middle of 2nd middle, upper W3 938 439 0.00085 0.00551 0.011063 0.004181 0.021604 46.29Foot end of 3rd middle, upper W3 1080 451 0.000827 0.005422 0.010717 0.004177 0.021143 47.3Middle of 2nd middle, upper W3 940 441 0.000826 0.005381 0.01045 0.004104 0.020761 48.17Middle of 1st middle, upper W3 36 27 0.000875 0.005474 0.010381 0.003763 0.020493 48.8Middle of 1st middle, upper W3 37 29 0.000847 0.005393 0.010407 0.003812 0.020459 48.88Section 5.0Section 1.0 Section 2.0 Section 3.0 Section 4.0 Section 6.0 Section 7.0