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#1 2017-10-09 13:35:50

anlu
Member
Registered: 2017-07-04
Posts: 6

[SOLVED] Stress components on a beam

I have a POU_D_E model and I want to get the stress components, but I have a hard time understanding how to do it. Since SIGM_NOEU doesn’t work for beams, it seems I have to use SIPO_NOEU to get the stress, but I don’t understand the components of that field.

My understanding is: SN, SMFY and SMFZ all contribute to sigma_xx, while SVY contributes to sigma_xy, SVZ to sigma_xz and SMT to sigma_yz. This is in the local coordinate system, which is main coordinate system of inertia of the cross section as described in R3.08.01. On that coordinate system the x-axis goes along the beam length, the z-axis is vertical on the cross-section and the y-axis is horizontal on the cross-section area.

So I’m wondering, aren’t there any sigma_yy and sigma_zz components? Have I misunderstood something?

Last edited by anlu (2017-10-10 12:32:55)

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#2 2017-10-09 15:58:48

jeanpierreaubry
Guru
From: nantes (france)
Registered: 2009-03-12
Posts: 3,569

Re: [SOLVED] Stress components on a beam

hello

i much prefer to use SIPO_ELNO instead of SIPO_NOEU as the beam element is then clearly idetified
then
SMFY is the Stress induced by the Moment of Flexion around Y axis,  sigma_yy to speak your language
and so on

making an anlytical calculation on a simple test case helps understanding what is what

jean pierre aubry

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#3 2017-10-10 12:31:51

anlu
Member
Registered: 2017-07-04
Posts: 6

Re: [SOLVED] Stress components on a beam

Thanks for the reply! I think I can figure it out now.

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#4 2019-07-04 14:58:37

pironman
Member
Registered: 2018-05-15
Posts: 50

Re: [SOLVED] Stress components on a beam

I add a question. After that, how can I visualize these stresses? I use Salome-Meca, and visualize the results with ParaView, in that beams I see the displacement, but not the stresses.

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#5 2019-07-04 15:33:48

mecour
Member
From: Ostrava (Czech)
Registered: 2011-04-04
Posts: 112

Re: [SOLVED] Stress components on a beam

To display fields in paravis you need to use _NOEU  one, ore if you use _ELNO field you have to use filter ELNO field to surface.

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