#Copyright (C) 1999 Fatigue Design + Evaluation Comm. of the SAE #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 Data Curve ! # AA-A356-T6 Cast Al, approx ISO:(Al Si7) # (the A implies more ductile than 356-T6) # SAE FD+E Round Robbin test results, all data of 3 batches # .01Cu .01Fe .01Mn 7.25Si .36Mg .01Zn .02Ti # Mod. reported as 10000ksi, changed to 10500(F.A.C.) # #Source: The data file was derived from information in the paper: #R.I. Stephens, H.D.Berns, R.A.Chernenkoff, R.L.Indig, S.K.Koh, D.J.Lingenfelser #M.R.Mitchell, R.A.Testin, C.C.Wigant, "Low Cycle Fatigue of A356-T6 Cast Aluminum #Alloy - A Round-Robin Test Program, SAE SP-760, paper 881701, 1988. # #FileType= strain_life #DataType= fitted #TIMEcol= 0 #NAME= A356-T6 #NAME= CastAluminum #Stress_units= ksi #Strain_units= strain #Su= 38.00 #Note: this is below the cyclic curve. #Sy= 32.50 #E= 10500. #%RA= 3.5 #BHN= 0. #NO. FAT. PTS.= 50 # #The traditional fitting process gives these parameters: #_A356-T6 CastAlumin BHN= 0 Fn= 0 #_ Monotonic Props. Cyclic Props. #ELAS. MOD.= 10500. KSI, 72. GPA K' = 161.4 KSI, 1113.MPA #YIELD,0.2%= 33. KSI, 224. MPA N' = 0.2015 #ULT. STRG.= 38. KSI, 262. MPA F. STRG COEF= 79.7 KSI, 550.MPA #K = 0.0 KSI, 0. MPA F.STRG EXP, b=-0.1127 #N = 0.0000 FAT DUCT COEF= 0.0302 #RED. IN AREA = 3.5 F.DUCT EXP, c=-0.5595 #T. FRAC. STG.= 0.0 KSI, 0. MPA Exp Cyc Yld = 46. Ksi, 318.MPA #T. FRAC. STR.= 0.000 Fit Cyc Yld = 42. Ksi, 292.MPA #No. fatigue data points= 50 # NOTE!! The Following Points are <b>FITTED DATA:</b> #Stress_Units= KSI #_Total Strain 2Nf Stress Mean Plastic Strain Initial #_ Amp Amp Stress Amp Elastic Mod. #_ #_Stress data below adjusted for first 9 data points to reflect actual #_cyclic stress-strain curve: 0.03779 1 53. 0. 0.0327 10500. #Fitted_point 0.02751 2 50. 0. 0.02275 10500. #Fitted_point 0.01860 5 47. 0. 0.01412 10500. #Fitted_point 0.01418 10 46.5 0. 0.00975 10500. #Fitted_point 0.01107 20 45.5 0. 0.00674 10500. #Fitted_point 0.00827 50 45. 0. 0.00398 10500. #Fitted_point 0.00681 100 43. 0. 0.00271 10500. #Fitted_point 0.00574 200 41. 0. 0.00184 10500. #Fitted_point 0.00470 500 38.5 0. 0.00103 10500. #Fitted_point #_ end of stress and plasticstrain adjustments (above). #_ Points below have had their life values adjusted to fit actual data: 0.00412 1000 36.6 0. 0.00063 10500. #Fitted_point 0.00365 3200 33.8 0. 0.00043 10500. #Fitted_point manually 0.00316 12000 30.5 0. 0.00026 10500. #Fitted_point manually 0.00286 20000 28.2 0. 0.00017 10500. #Fitted_point manually 0.00260 30000 26.1 0. 0.00012 10500. #Fitted_point manually 0.00231 60000 23.5 0. 0.00007 10500. #Fitted_point manually 0.00212 100000 21.8 0. 0.00005 10500. #Fitted_point manually 0.00195 200000 20.1 0. 0.00003 10500. #Fitted_point manually 0.00175 400000 18.2 0. 0.00002 10500. #Fitted_point manually 0.00161 620000 16.8 0. 0.00001 10500. #Fitted_point manually 0.00149 1000000 15.5 0. 0.00001 10500. #Fitted_point manually 0.00134 1200000 14.0 0. 0.00001 10500. #Fitted_point manually 0.00124 1600000 13.0 0. 0.00000 10500. #Fitted_point manually 0.00114 2000000 12.0 0. 0.00000 10500. #Fitted_point manually 0.00103 10000000 10.8 0. 0.00000 10500. #Fitted_point manually 0.00095 100000000 10.0 0. 0.00000 10500. #Fitted_point manually 0.00095 200000000 10.0 0. 0.00000 10500. #Fitted_point manually #