OK so I have graduated and am trying to stay sharp on my skills
Sadly lots have been forgotten lol
I am working on review questions from the FE test and one is:
Strain:
1) .001
2) .0018
3) .003
4) .0009
5) .0011
6) .0017
Mean Strain:
1) 0
2) 0
3) 0
4) .02
5) .02
6) .02
Cycles to failure:
1) 500000
2) 12000
3) 2200
4) 480000
5) 45000
6) 7000
Assume Youngs Mod = 25e6psi
Question
1) Plot the design fatigue curve
2) show effect of mean stress
Any help would be awesome as my textbooks arent helping me
What I have done
1) converted the strain to stress by using youngs mod after reaarangin cycles from least to max
2) plotted stess vs cycles
I believe that is the right way yet i can not use excels function to get the fatigue curve. How do I get the fatigure curve in excel?
How do I incorporate mean effects
lol thanks at this odd request. just buggin me
Sadly lots have been forgotten lol
I am working on review questions from the FE test and one is:
Strain:
1) .001
2) .0018
3) .003
4) .0009
5) .0011
6) .0017
Mean Strain:
1) 0
2) 0
3) 0
4) .02
5) .02
6) .02
Cycles to failure:
1) 500000
2) 12000
3) 2200
4) 480000
5) 45000
6) 7000
Assume Youngs Mod = 25e6psi
Question
1) Plot the design fatigue curve
2) show effect of mean stress
Any help would be awesome as my textbooks arent helping me
What I have done
1) converted the strain to stress by using youngs mod after reaarangin cycles from least to max
2) plotted stess vs cycles
I believe that is the right way yet i can not use excels function to get the fatigue curve. How do I get the fatigure curve in excel?
How do I incorporate mean effects
lol thanks at this odd request. just buggin me