# #Copyright (C) 2012 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 # # NOTE: Fitted Data !! # A36 Steel Merged Data Sets from Refs. 1 and 2: # Ref.1: P.Dindinger report to Fat.Des.+Eval. Comm. Apr.2012 # Ref.2: G.A.Miller and H.S.Reemsnyder, "Strain-Cycle Fatigue of Sheet and # Plate Steels I: Test Method Development and Data Presentation," # SAE Paper 830175, Detroit MI, Feb28-Mar.4, 1983 # # NOTE that original test data ends at 2Nf = 1.3million. # See notes in table below. Changes made Nov.22, Dec02 2014 # #FileType= strain_life #DataType= fitted #TIMEcol= 0 #NAME= ASTM-A36 #NAME= Structural #NAME= Steel #Stress_units= ksi #Strain_units= strain #Sy= 38.4 0.2pc offset, 265 mpa #Su= 69. ksi from Miller/Reemsnyder = 475 mpa #eu= 0 #strain at Su not reported #E= 29528. ksi = 203600 mpa #FractureStrain= 0 not reported #FractureStress= 0. not reported #monotonic_K= 0 not reported #monotonic_n= 0 not reported #BHN= 138. #%RA= 0. % not reported # #saedigcurve_v2.2.f starts. # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. 0.88485 1 115.3 0. 0.88095 29528. #Fitted_point 0.06888 100 75.0 0. 0.06634 29528. #Fitted_point extrapolate Dec 02 0.01426 2000 56.7 0. 0.01234 29528. #Fitted_point Dec 02 0.00914 5000 52.1 0. 0.00737 29528. #Fitted_point 0.00665 10000 48.8 0. 0.00499 29528. #Fitted_point 0.00493 20000 45.7 0. 0.00338 29528. #Fitted_point 0.00344 50000 42.0 0. 0.00202 29528. #Fitted_point 0.00270 100000 39.3 0. 0.00136 29528. #Fitted_point 0.00217 200000 36.8 0. 0.00092 29528. #Fitted_point 0.00169 500000 33.8 0. 0.00055 29528. #Fitted_point 0.00144 1000000 31.6 0. 0.00037 29528. #Fitted_point #Original test data ends at 2Nf = 1.3million. #Points below are extrapolation: 0.00125 2000000 29.6 0. 0.00025 29528. #Fitted_point 0.00106 5000000 27.1 0. 0.00014 29528. #Fitted_point 0.00095 10000000 25.3 0. 0.00010 29528. #Fitted_point 0.00086 20000000 23.6 0. 0.00006 29528. #Fitted_point 0.00077 50000000 21.6 0. 0.00004 29528. #Fitted_point 0.00071 100000000 20.2 0. 0.00002 29528. #Fitted_point #When this curve is cut off at a higher level, the Neuber solutions run #into problems due to an effective change in modulus when using the #lowest strain data point. # #