# #Copyright (C) 2015 F.D.E. Committee #This data file is free software - you can redistribute it and/or #modify it under the terms of the GNU General Public License as #published by the Free Software Foundation; either version 2 of the #license, or (at your option) any later version. #This data file is distributed in the hope that it will be useful, #but WITHOUT ANY WARRANTY - without even the implied warranty of #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #GNU General PUblic License for more details. #You should have received a copy of the GNU General PUblic License #along with this program - if not, write to the Free Software #Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA #Try also their web site: http://www.gnu.org/copyleft/gpl.html # # SAE950X 8mm and 10mm thick plates + QStE380 (SAE950XLK) 3mm sheet # See individual files for details: # Ref.1: P.Watson and T.H.Topper, "An Evaluation of the Fatigue Performance # of Automotive Steels," SAE Paper 710597, Montreal Que., Jun.7-11 1971 # Ref.2: P.Dindinger report to Fat.Des.+Eval. Comm. 1995 # Ref.3: L.DePrada, et al, "Fatigue Behaviour of High Strength Steel Sheets # Used in Automotive Industry," Fatigue 2007. # Data digitized from graphs and may contain errors. #saedigcurve_v2.2.f starts. # #FileType= strain_life #DataType= fitted #TIMEcol= 0 #NAME= SAE950X #NAME= HSLA-345 #NAME= QStE380 (possiby not a 950X) #NAME= Steel #Stress_units= mpa #Strain_units= strain #Sy= 432 ave. of 345. (50ksi) 437.(63) 516. (74) #Su= 496 ave. of 441. 485. 562 #eu= 0.14 (engineering strain at Su from Watson) #E= 203000 ave. of204220. 204700 200100 #FractureStrain= 1.01 ave. of 1.06 1.16 #FractureStress= 751. #monotonic_K= 0 not reported #monotonic_n= 0 not reported #BHN= 140. 170. #%RA= 65. % 68.5 #SAE950X HSLA-345 BHN= 140 Fn= 0 ## Monotonic Props. Cyclic Props. #ELAS. MOD.= 29443. KSI, 203. GPA K' = 133.2 KSI, 918.MPA #YIELD,0.2%= 63. KSI, 432. MPA N' = 0.1451 #ULT. STRG.= 72. KSI, 496. MPA F. STRG COEF= 107.9 KSI, 744.MPA #K = 0.0 KSI, 0. MPA F.STRG EXP, b=-0.0724 #N = 0.0000 FAT DUCT COEF= 0.2342 #RED. IN AREA = 65.0 F.DUCT EXP, c=-0.4990 #T. FRAC. STG.= 108.9 KSI, 751. MPA Exp Cyc Yld = 54. Ksi, 373.MPA #T. FRAC. STR.= 1.010 Fit Cyc Yld = 51. Ksi, 350.MPA #No. fatigue data points= 56 # # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' #Stress_Units= MPa #TotStrAmp 2Nf StsAmp So PlsStr IniMod NeubEqvStsAmpl 1.01 1 751 0 1.006 203000 12409 #Fitted_point monotonic 0.01914 640 421.6 0 0.01707 203000 1280 #Fitted_point manually 0.00968 2300 393.6 0 0.00774 203000 879 #Fitted_point manually 0.00739 4000 382.1 0 0.00551 203000 757 #Fitted_point manually 0.00532 8000 367.4 0 0.00351 203000 630 #Fitted_point manually 0.00424 15000 356.6 0 0.00249 203000 554 #Fitted_point manually 0.00346 24000 346 0 0.00176 203000 493 #Fitted_point manually 0.00273 50000 332.1 0 0.0011 203000 429 #Fitted_point manually 0.00234 80000 321.5 0 0.00076 203000 391 #Fitted_point manually 0.00204 164000 310.8 0 0.00051 203000 359 #Fitted_point manually 0.00175 400000 296.1 0 0.00029 203000 324 #Fitted_point manually 0.00158 1000000 284.3 0 0.00018 203000 302 #Fitted_point manually 0.00145 2400000 271.9 0 0.00011 203000 283 #Fitted_point manually 0.00131 15000000 254.6 0 0.00005 203000 260 #Fitted_point manually 0.00131 20000000 254.6 0 0.00005 203000 260 #Fitted_point manually #