# #Copyright (C) 2010 F.A. Conle #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 # # Fitted Curve ! # SAE1522 or CSA G40.12 structural steel. Bhn 155 # 0.25C wt% 1.55Mn .05P .06S .13-.33Si # Tested UoWaterloo David Robins MSc Thesis 1969 # Material cyclicly hardens at high strain ampl., softens at lower levels # Tensile test: Upper then lower yield behavior # Data derived from tables in thesis. FAConle 2010 #saedigcurve_v2.2.f starts. #FileType= strain_life #DataType= fitted #Name= SAE1522H #Name= CSA_G40.12 #Name= Steel #Stress_units= MPa #Strain_units= strain #Sy= 290 # 42ksi #Su= 517 # 75ksi #E= 206800 # Mod. reported as 30000 ksi #%RA= 65 #TrueFractureStress= 861. #TrueFractureStrain= 1.05 #MaterialForm= bar #BHN= 155 # # SAE1522H CSA_G40.12 BHN= 155 Fn= 0 # Monotonic Props. Cyclic Props. #ELAS. MOD.= 29994. KSI, 207. GPA K' = 109.4 KSI, 754.MPA #YIELD,0.2%= 42. KSI, 290. MPA N' = 0.1283 #ULT. STRG.= 75. KSI, 517. MPA F. STRG COEF= 96.0 KSI, 662.MPA #K = 0.0 KSI, 0. MPA F.STRG EXP, b=-0.0633 #N =-1.8965 FAT DUCT COEF= 0.3609 #RED. IN AREA = 65.0 F.DUCT EXP, c=-0.4933 #T. FRAC. STG.= 0.0 KSI, 0. MPA Exp Cyc Yld = 49. Ksi, 340.MPA #T. FRAC. STR.= 0.000 Fit Cyc Yld = 49. Ksi, 339.MPA #No. fatigue data points= 8 # # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' #Stress_Units= MPa # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. 1.05 1 862 0 1.021 206800. #TensileTest added manually 0.01402 1000 423.4 0. 0.01197 206800. #Fitted_point 0.01047 2000 405.9 0. 0.00851 206800. #Fitted_point 0.00727 5000 383.9 0. 0.00541 206800. #Fitted_point 0.00563 10000 368.0 0. 0.00385 206800. #Fitted_point 0.00444 20000 352.8 0. 0.00273 206800. #Fitted_point 0.00335 50000 333.5 0. 0.00174 206800. #Fitted_point 0.00278 100000 319.7 0. 0.00123 206800. #Fitted_point 0.00235 200000 306.3 0. 0.00087 206800. #Fitted_point 0.00195 500000 289.5 0. 0.00055 206800. #Fitted_point 0.00173 1000000 277.3 0. 0.00039 206800. #Fitted_point #Warning! : Fitted points below are extrapolation 0.00156 2000000 265.5 0. 0.00027 206800. #Fitted_point 0.00138 5000000 250.7 0. 0.00017 206800. #Fitted_point 0.00128 10000000 239.9 0. 0.00012 206800. #Fitted_point # #