Do my results appear to be correct?
Verfasst: Do 23. Apr 2020, 14:10
Hello there,
I hope it is OK for me to ask this question, I just need some reassurance that I'm using this software correctly, and that the results I am obtaining seem realistic.
The part I am performing FEA analysis on is a simple thick wall cylinder / pipe:
- Made from Stainless Steel
- Length = 250mm
- Internal Diameter = 25mm
- External Diameter = 35mm
- Thickness = 5mm
The mechanical properties of the stainless steel are:
- Elastic Modulus = 190,000 MPa
- Density = 7700 kg/m^3
- Poisson's ratio = 0.26
I then wish to analyse this component by fixing it at one end, preventing all displacement, and then applying a 500,000N (500kN) load at the other end in tension. I have set up these constraints within Z88Aurora as seen below:
- One end fixed (node set):
- One end tensile force applied (node set):
Solving this with a SICCG solver produces results showing a total deflection of approximately 200mm:
However, I've tried to run this analysis again and found the deflection to be only approximately 60mm. I believe I may have set the mesh up differently, but I'm not certain.
Can I please ask:
1) Why would the results vary so significantly when from what I can tell my parameters were the same?
2) Which of these 2 results appear to be the most logical and likely to be correct?
Thank you!
I hope it is OK for me to ask this question, I just need some reassurance that I'm using this software correctly, and that the results I am obtaining seem realistic.
The part I am performing FEA analysis on is a simple thick wall cylinder / pipe:
- Made from Stainless Steel
- Length = 250mm
- Internal Diameter = 25mm
- External Diameter = 35mm
- Thickness = 5mm
The mechanical properties of the stainless steel are:
- Elastic Modulus = 190,000 MPa
- Density = 7700 kg/m^3
- Poisson's ratio = 0.26
I then wish to analyse this component by fixing it at one end, preventing all displacement, and then applying a 500,000N (500kN) load at the other end in tension. I have set up these constraints within Z88Aurora as seen below:
- One end fixed (node set):
- One end tensile force applied (node set):
Solving this with a SICCG solver produces results showing a total deflection of approximately 200mm:
However, I've tried to run this analysis again and found the deflection to be only approximately 60mm. I believe I may have set the mesh up differently, but I'm not certain.
Can I please ask:
1) Why would the results vary so significantly when from what I can tell my parameters were the same?
2) Which of these 2 results appear to be the most logical and likely to be correct?
Thank you!