Results for a36sample_5.4 : Crack Initiation Using saefcalc2

Author: userNameHere
Affiliation: where
Sat Oct 19 14:23:16 EDT 2013

saefcalc2.f vers.= 1.9

Simulation input data:
Material file= merged_a36_fitted.html
Multiplication Factor= 0.5400000E+01

Crack Initiation Life Results for a36sample_5.4

Loop   Smax    Smin         N  Sigmax  Sigmin Delta Epsmax Epsmin DeltaEps  %Eps %SWaT %Sts %Morr %Goodm
1   472.5  -236.5        1.0   295.  -226.  521. 0.00372 -.00102 0.00474  77.5  79.6  77.5  83.5  86.8
2   326.2  -236.5        1.0   238.  -226.  464. 0.00233 -.00102 0.00335  22.5  18.4  22.5  16.5  13.2
3   326.2    -0.2        1.0   238.   -65.  304. 0.00233 0.00061 0.00172   0.0   2.0   0.0   0.0   0.0
4   281.3    44.8        2.0   216.    -4.  220. 0.00196 0.00071 0.00125   0.0   0.0   0.0   0.0   0.0
5   292.7    67.5        2.0   222.    12.  210. 0.00205 0.00086 0.00119   0.0   0.0   0.0   0.0   0.0

Predicted History Repetitions to Initiation:


StrainLife_Reps SWaT_Life_Reps StressLife_Reps   Morrow_Reps   Goodman_Reps (Reps= Repetions)
58607.6         44488.3         58607.5         39644.9         29902.1

Local Stress and Strain Response:

Cumulative Cycle Plot of History and Damage:

(Rectangles are Rainflow Cycle Sets: Sorted by Range: largest on Left)

Appendix 1: Rainflow Cycles

#Inputs after scaling and sorting:
#  Srange    Smean     Cycles   Smax   Smin
709.0  118.0         1.0 472.5 -236.5
562.7   44.8         1.0 326.2 -236.5
326.3  163.0         1.0 326.2   -0.2
236.5  163.1         2.0 281.3   44.8
225.2  180.1         2.0 292.7   67.5

Appendix 2: Stress-Strain-Init.Life file: "merged_a36_fitted.html"


#SAE Standard Fatigue Data File format
#
# Pick one:
#FDE_plot
#FDE_fit
#
#
#
#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. 
#
#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
   0.00914       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
#
#