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August 30, 2018 at 2:20 pm
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August 30, 2018 at 5:50 pm
Rahul Kumbhar
Ansys EmployeeFrom the image, the beam without radius R will have stress singularity in the corner. The stresses will be very high and unreal. Try increasing the radius, you may get closely matching result.
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August 31, 2018 at 3:25 am
peteroznewman
SubscriberHi Adisa,
You have made an error in geometry construction.
If the inner radius is 1 mm and the thickness is 2 mm, then the outer radius must be 3 mm. You used 2 mm.
You were also missing the 4 and 6 mm dimensions.
You quote only one calculated stress, but there are two Sigma Y values, one on the left and one on the right,
because the bending moment is +/- c but the Fy/A is only a compressive stress.
Regards,
Peter
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August 31, 2018 at 6:50 am
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August 31, 2018 at 3:27 pm
ssridhar
Ansys EmployeeHi Adisa,
In addition to the geometry changes that Peter pointed out, consider performing this as a 2D analysis. Here are the results that I got making the geometry changes + performing this as a 2D analysis. I think this way the out of plane Poisson's effect that might be present in a 3D model will be ignored.
Sincerely,
Raghav
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August 31, 2018 at 9:53 pm
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September 3, 2018 at 1:51 pm
Adisa
SubscriberPeter, can you see the analysis of the first post. I got the results of bending stress on the longer beam.
Best regards.
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September 3, 2018 at 4:05 pm
peteroznewman
SubscriberAdisa,
The equations you showed above are for the combined bending and axial load on the short vertical column and are reported as Normal Stress in the Y direction.
The bending stress on the longer beam would be the Normal Stress in the X direction and the simple handbook equation you show for bending stress is correct for the straight section. Once you get to the radius section, that equation is not sufficient.
Kind regards,
Peter
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