# Copyright (C) 2000 Fatigue Design & Evaluation Comm. of 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 MERCHANTA- # BILITY 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 # # AA7075_T6 ALUMINUM WROUGHT, Data derived from reference: # ENDO T.,J.MORROW, ASTM J. OF MATERIALS, VOL.4,P.159,1969 # Matls. Source: Reynolds, 3/4in.dia. rod (rolled), T6 heat treat. # Tests were diametral type spec. for strains higher than +-0.012 # (longitudinal). The paper shows cyclic hardening curves. # BHN assumed 150 # #Ford= 107 ALUM #FileType= strain_life #DataType= fitted #TIMEcol= 0 #NAME= AA7075_T6 #UNITS= KSI #Stress_units= ksi #Su= 83.90 #Sy= 68.00 #E= 10298. #%RA= 33.0 #BHN= 150. #NO. FAT. PTS.= 8 #Tot Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. # # AA7075_T6 BHN= 0. Fn= 107 # Monotonic Props. Cyclic Props. #ELAS. MOD.= 10298. KSI, 71. GPA K' = 136.8 KSI, 943.MPA #YIELD,0.2%= 68. KSI, 469. MPA N' = 0.0966 #ULT. STRG.= 84. KSI, 578. MPA F. STRG COEF= 127.1 KSI, 876.MPA #K = 0.0 KSI, 0. MPA F.STRG EXP, b=-0.0751 #N = 0.0000 FAT DUCT COEF= 0.4664 #RED. IN AREA = 33.0 F.DUCT EXP, c=-0.7779 #T. FRAC. STG.= 0.0 KSI, 0. MPA Exp Cyc Yld = 75. Ksi, 517.MPA #T. FRAC. STR.= 0.000 Fit Cyc Yld = 78. Ksi, 536.MPA #No. fatigue data points= 8 # # NOTE!!! The Following Points are FITTED DATA: #UNITS= KSI #Stress_Units= KSI # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. 0.47877 1 127.1 0. 0.46643 10298. #Fitted_point 0.28375 2 120.6 0. 0.27204 10298. #Fitted_point 0.14431 5 112.6 0. 0.13338 10298. #Fitted_point 0.08817 10 106.9 0. 0.07779 10298. #Fitted_point 0.05522 20 101.4 0. 0.04537 10298. #Fitted_point 0.03144 50 94.7 0. 0.02224 10298. #Fitted_point 0.02170 100 89.9 0. 0.01297 10298. #Fitted_point 0.01585 200 85.3 0. 0.00757 10298. #Fitted_point 0.01144 500 79.6 0. 0.00371 10298. #Fitted_point 0.00951 1000 75.6 0. 0.00216 10298. #Fitted_point 0.00823 2000 71.8 0. 0.00126 10298. #Fitted_point 0.00712 5000 67.0 0. 0.00062 10298. #Fitted_point 0.00654 10000 63.6 0. 0.00036 10298. #Fitted_point 0.00607 20000 60.4 0. 0.00021 10298. #Fitted_point 0.00557 50000 56.3 0. 0.00010 10298. #Fitted_point 0.00525 100000 53.5 0. 0.00006 10298. #Fitted_point 0.00497 200000 50.8 0. 0.00004 10298. #Fitted_point 0.00462 500000 47.4 0. 0.00002 10298. #Fitted_point 0.00438 1000000 45.0 0. 0.00001 10298. #Fitted_point 0.00415 2000000 42.7 0. 0.00001 10298. #Fitted_point 0.00387 5000000 39.9 0. 0.00000 10298. #Fitted_point 0.00368 10000000 37.8 0. 0.00000 10298. #Fitted_point 0.00349 20000000 35.9 0. 0.00000 10298. #Fitted_point 0.00326 50000000 33.5 0. 0.00000 10298. #Fitted_point 0.00309 100000000 31.8 0. 0.00000 10298. #Fitted_point