Material + Cycles File

#Material + Cycles File #

1. Your Material (Digital-Fitted Curves):



#
# Fitted Curve.
# SAE 4140 QandT Rc=41. 100%Martensite, UoWaterloo test
# Inclusion Rating Type D 1.5
# saedigcurve_v2.2.f starts.
#FileType= strain_life
#DataType= fitted
#Name= SAE4140
#Name= AisiIt_64
#Stress_units= MPa
#Strain_units= strain
#Sy= 1297.0
#Su= 1390.0
#E= 197000
#monotonic_K= 1626.7
#monotonic_n= 0.036
#FractureStrain= 0.70
#FractureStress= 1522
#%RA= 48.3
#MaterialForm= 32mmbar
#FailureDef= 50% load drop
#Hardness, Rockwell C= 41
#BHN= 381
#Basic Oxygen= False
#Electric Furnace= True
#Vacuum Degas= False
#Ladle Refined= False
#Ingot Cast= False
#Continuous Cast= True
#Martensite, %= 100
#Carbon, %= 0.42
#Manganese, %= 0.83
#Phosphorus, %= 0.011
#Sulfur, %= 0.021
#Silicon, %= 0.24
#Copper, %= 0.13
#Nickel, %= 0.25
#Chromium, %= 0.88
#Molybdenum, %= 0.19
#Vanadium, %= 0.00
#Columbium/Niobium, %= 0.01
#Aluminum, %= 0.024
#Calcium, %= 0.00
#Tin, %= 0.010
#Nitrogen, ppm= 90
# SAE4140    AisiIt_64  BHN=  381 Fn=    0
#          Monotonic Props.       Cyclic Props.
#ELAS. MOD.= 28572. KSI,  197. GPA     K'        = 179.2 KSI,  1235.MPA
#YIELD,0.2%=   188. KSI, 1297. MPA     N'        = 0.0694
#ULT. STRG.=   202. KSI, 1390. MPA     F. STRG COEF=  182.0 KSI, 1255.MPA
#K       =      0.0 KSI,      0. MPA   F.STRG EXP, b=-0.0489
#N            = 0.0000                 FAT DUCT COEF=   1.2527
#RED. IN AREA = 48.3                   F.DUCT EXP, c=-0.7053
#T. FRAC. STG.= 220.7 KSI, 1522. MPA   Exp Cyc Yld  =  116. Ksi, 803.MPA
#T. FRAC. STR.= 0.700                  Fit Cyc Yld  =  116. Ksi, 797.MPA
#No. fatigue data points=   22
#
# NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n'
# NOTE!! Manual fit near Nf=1 and Fatigue limit. FAC Jun09
#Stress_Units= MPa
# Total Strain   2Nf  Stress  Mean   Plastic Strain   Initial
#    Amp               Amp   Stress      Amp        Elastic Mod.
    .70             1  1522        0.    .69       197000. #Fitted_point manually
   0.01027       2000   854.4      0.   0.00594    197000. #Fitted_point
   0.00728       5000   820.1      0.   0.00312    197000. #Fitted_point
   0.00595      10000   795.0      0.   0.00191    197000. #Fitted_point
   0.00508      20000   770.5      0.   0.00117    197000. #Fitted_point
   0.00436      50000   739.0      0.   0.00061    197000. #Fitted_point
   0.00400     100000   715.6      0.   0.00037    197000. #Fitted_point
   0.00373     200000   692.4      0.   0.00022    197000. #Fitted_point
   0.00347     500000   662.4      0.   0.00011    197000. #Fitted_point
   0.00347   10000000   662.4      0.   0.00011    197000. #Fitted_point manually

#

2. History Magnification or Multiplication factor

3. Enter Elastic Kt*Nominal (or Finite Element) Stress History (Rainflow counted cycle sets) Below:

MPa !

Cycle Set #1 : Smax Smin Cycles
Cycle Set #2 : Smax Smin Cycles
Cycle Set #3 : Smax Smin Cycles
Cycle Set #4 : Smax Smin Cycles
Cycle Set #5 : Smax Smin Cycles
Cycle Set #6 : Smax Smin Cycles

1. Your Material (Digital-Fitted Curves):

2. History Magnification or Multiplication factor

3. Enter Elastic Kt*Nominal (or Finite Element) Stress History (Rainflow counted cycle sets) Below:

4. (Page will be submitted to UoWaterloo Website)