UDL on Pipe please
Hi every one, I am trying to apply UDL on pile element but it doesn't work, I know how to do it for beams , but I need to apply on pipe16. I also tried to find 2D elastic Beam3 , however I can put it in the key command (et,1,beam3) this element doesn't allow me to have real constants for circular cross-section.
When I use beam188 and beam189 the shape of bending moment diagrams don't look as good as the shapes that I get from 2D elastic beam3, and the results are different slightly. can some one tell me if there is away that I could define 2d beam3 as circular cross-section please?
I have tried to use Sectype,Ctube, and secdata for beam3 but doent work either.
Your help means a lot. Thanks you all in advance.
regards ,
Salam
From: Xansys-temp [xansys-temp-bounces@xansystest.info] on behalf of Fayaz Sofi [fayaz.sofi@huskers.unl.edu]
Sent: Wednesday, October 14, 2015 4:14 PM
To: XANSYS Mailing List Temporary Home
Subject: Re: [Xansys] Integration Point (Stresses and derived results)
David,
I appreciate your advice and it definitely is going to give me direction to explore further. I am taking new version of "Programmer's Manual for Mechanical APDL" to move further.
Thanking You,
Best regards
Fayaz Sofi
Graduate Student - UNL
-----Original Message-----
From: Xansys-temp [mailto:xansys-temp-bounces@xansystest.info] On Behalf Of David Gross
Sent: Tuesday, October 13, 2015 12:23 PM
To: XANSYS Mailing List Temporary Home xansys-temp@xansystest.info
Subject: Re: [Xansys] Integration Point (Stresses and derived results)
Fayaz,
I've never had occasion to do this, but I am aware that others have used software such as Matlab to import these data and use them for downstream manipulations outside of ANSYS. I am not familiar with any of the details, but see if you can get your hands on a document called, "Programmer's Manual for Mechanical APDL". My understanding is that Part I (Guide to Interface with ANSYS) of this document lays out the file format of the *.rst file, including how to access the integration point data.
A quick Google search revealed the following online copy of this -- related to Release 12 -- at the following location:
http://orange.engr.ucdavis.edu/Documentation12.0/120/ans_prog.pdf
It should be good enough to at least let you know what content used to be in this document. And you should be able to get a modern-day copy for your Release through your ASD, if it is not available on the ANSYS website via a bit of digging.
Regards,
David Gross
Dominion Engineering, Inc.
-----Original Message-----
From: Xansys-temp [mailto:xansys-temp-bounces@xansystest.info] On Behalf Of Fayaz Sofi
Sent: Tuesday, October 13, 2015 12:32 PM
To: xansys-temp@xansystest.info
Subject: [Xansys] Integration Point (Stresses and derived results)
Dear Expert members,
My finite element model for composite beam in MAPDL consisting of SOLID65 (concrete), LINK180 (steel rebar) and SHELL181 (Steel girder) elements. I intend to use basic mechanics - equilibrium equations and derived result quantities for getting bending moment at a section.
I am little confused on how to get derived quantitates ( Stresses in SOLID65) , Element forces in LINK180 and Stress resultants in SHELL181 at integration points. I am aware of ANSYS basics on how to get these results at nodes using ESOL, ETABLE or *GET using ITEM component or Sequence number method. I am requesting help on the fact if one intends to get these items at integration points.
Command ERESX,NO : helps to copy integration point results to nodes. Is this only way to get integration point results.
I appreciate all your time and advices towards student community who get best benefited from this community.
Thanking you
Fayaz Sofi
(Graduate Student - University of Nebraska Lincoln, USA)
Xansys-temp mailing list
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What version of ANSYS are you running?
There were several Class3 errors issues for the pipe288 and beam 188 elements.
Not that's it's definitely the issue but you might want to move up to at least v15.0.7 of better yet 16.0 or 16.1 if you have it.
Most errors were fixed as of V15 but some errors persist into V16.
Keith Gallagher
GE Aviation
-----Original Message-----
From: Xansys-temp [mailto:xansys-temp-bounces@xansystest.info] On Behalf Of Salam Hassan
Sent: Wednesday, October 14, 2015 2:06 PM
To: XANSYS Mailing List Temporary Home
Subject: [Xansys] UDL on Pipe please
Hi every one, I am trying to apply UDL on pile element but it doesn't work, I know how to do it for beams , but I need to apply on pipe16. I also tried to find 2D elastic Beam3 , however I can put it in the key command (et,1,beam3) this element doesn't allow me to have real constants for circular cross-section.
When I use beam188 and beam189 the shape of bending moment diagrams don't look as good as the shapes that I get from 2D elastic beam3, and the results are different slightly. can some one tell me if there is away that I could define 2d beam3 as circular cross-section please?
I have tried to use Sectype,Ctube, and secdata for beam3 but doent work either.
Your help means a lot. Thanks you all in advance.
regards ,
Salam
From: Xansys-temp [xansys-temp-bounces@xansystest.info] on behalf of Fayaz Sofi [fayaz.sofi@huskers.unl.edu]
Sent: Wednesday, October 14, 2015 4:14 PM
To: XANSYS Mailing List Temporary Home
Subject: Re: [Xansys] Integration Point (Stresses and derived results)
David,
I appreciate your advice and it definitely is going to give me direction to explore further. I am taking new version of "Programmer's Manual for Mechanical APDL" to move further.
Thanking You,
Best regards
Fayaz Sofi
Graduate Student - UNL
-----Original Message-----
From: Xansys-temp [mailto:xansys-temp-bounces@xansystest.info] On Behalf Of David Gross
Sent: Tuesday, October 13, 2015 12:23 PM
To: XANSYS Mailing List Temporary Home xansys-temp@xansystest.info
Subject: Re: [Xansys] Integration Point (Stresses and derived results)
Fayaz,
I've never had occasion to do this, but I am aware that others have used software such as Matlab to import these data and use them for downstream manipulations outside of ANSYS. I am not familiar with any of the details, but see if you can get your hands on a document called, "Programmer's Manual for Mechanical APDL". My understanding is that Part I (Guide to Interface with ANSYS) of this document lays out the file format of the *.rst file, including how to access the integration point data.
A quick Google search revealed the following online copy of this -- related to Release 12 -- at the following location:
It should be good enough to at least let you know what content used to be in this document. And you should be able to get a modern-day copy for your Release through your ASD, if it is not available on the ANSYS website via a bit of digging.
Regards,
David Gross
Dominion Engineering, Inc.
-----Original Message-----
From: Xansys-temp [mailto:xansys-temp-bounces@xansystest.info] On Behalf Of Fayaz Sofi
Sent: Tuesday, October 13, 2015 12:32 PM
To: xansys-temp@xansystest.info
Subject: [Xansys] Integration Point (Stresses and derived results)
Dear Expert members,
My finite element model for composite beam in MAPDL consisting of SOLID65 (concrete), LINK180 (steel rebar) and SHELL181 (Steel girder) elements. I intend to use basic mechanics - equilibrium equations and derived result quantities for getting bending moment at a section.
I am little confused on how to get derived quantitates ( Stresses in SOLID65) , Element forces in LINK180 and Stress resultants in SHELL181 at integration points. I am aware of ANSYS basics on how to get these results at nodes using ESOL, ETABLE or *GET using ITEM component or Sequence number method. I am requesting help on the fact if one intends to get these items at integration points.
Command ERESX,NO : helps to copy integration point results to nodes. Is this only way to get integration point results.
I appreciate all your time and advices towards student community who get best benefited from this community.
Thanking you
Fayaz Sofi
(Graduate Student - University of Nebraska Lincoln, USA)
Xansys-temp mailing list
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Salam,
BEAM 188 uses linear shape function by default. Which means, in order to
capture the 2nd / 3rd order variation of the bending moment with in A
physical beam member, the member must be meshed with more number of BEAM188
linear elements. As the element size comes down, bending moment diagram
(BMD) match with analytical BMD. However, linear shape function of the
BEAM188 can be changed to cubic shape function using KEYOPT 3=2. Then fewer
elements are sufficient to reproduce analytical BMD. Please refer BEAM 188
element page in ANSYS help manual, you will get to know a lot more about
its proper usage.
BEAM-3 has cubic shape function by default so it produces correct BMD
without any additional user settings. BEAM-3 uses equivalent rectangular
cross section always, based on A,I and t inputs.
I hope now you can produce the correct BMD for a beam of circular cross
section with UDL using BEAM188 + KEYOPT 3=2 + Sectype,Ctube.
Note : Post a new topic in fresh email. Do not continue in existing email
threads.
Regards,
Santhosh M,
ANSYS, Bangalore, INDIA.
On Wed, Oct 14, 2015 at 11:35 PM, Salam Hassan <
salam.hassan@manchester.ac.uk> wrote:
Hi every one, I am trying to apply UDL on pile element but it doesn't
work, I know how to do it for beams , but I need to apply on pipe16. I also
tried to find 2D elastic Beam3 , however I can put it in the key command
(et,1,beam3) this element doesn't allow me to have real constants for
circular cross-section.
When I use beam188 and beam189 the shape of bending moment diagrams don't
look as good as the shapes that I get from 2D elastic beam3, and the
results are different slightly. can some one tell me if there is away that
I could define 2d beam3 as circular cross-section please?
I have tried to use Sectype,Ctube, and secdata for beam3 but doent work
either.
Your help means a lot. Thanks you all in advance.
regards ,
Salam
Hi,
One offshoot doubt arising out of the detailed explanation on beam188
given by Mr. Santhosh:
For modelling of partially/fully cracked RCC beam/column elements as
well as to change torsional stiffness (which drops down drastically upon
cracking), beam3 used to offer full control on inputs as Ixx, Iyy and
Jxy could be individually changed by user to reflect the corrections to
stiffness with respect to each axis of rotation.
As beam3 is in dump yard, has anyone come across a way that the above
(i.e., individual change to bending and torsional stiffness without
affecting axial and shear stiffness) could be achieved in beam188?
Thank you very much in advance.
regards
-Roshan A.D
SSED, AERB, Mumbai
On 10/15/2015 9:51 AM, Santhosh Murugadass wrote:
Salam,
BEAM 188 uses linear shape function by default. Which means, in order to
capture the 2nd / 3rd order variation of the bending moment with in A
physical beam member, the member must be meshed with more number of BEAM188
linear elements. As the element size comes down, bending moment diagram
(BMD) match with analytical BMD. However, linear shape function of the
BEAM188 can be changed to cubic shape function using KEYOPT 3=2. Then fewer
elements are sufficient to reproduce analytical BMD. Please refer BEAM 188
element page in ANSYS help manual, you will get to know a lot more about
its proper usage.
BEAM-3 has cubic shape function by default so it produces correct BMD
without any additional user settings. BEAM-3 uses equivalent rectangular
cross section always, based on A,I and t inputs.
I hope now you can produce the correct BMD for a beam of circular cross
section with UDL using BEAM188 + KEYOPT 3=2 + Sectype,Ctube.
Note : Post a new topic in fresh email. Do not continue in existing email
threads.
Regards,
Santhosh M,
ANSYS, Bangalore, INDIA.
On Wed, Oct 14, 2015 at 11:35 PM, Salam Hassan <
salam.hassan@manchester.ac.uk> wrote:
Hi every one, I am trying to apply UDL on pile element but it doesn't
work, I know how to do it for beams , but I need to apply on pipe16. I also
tried to find 2D elastic Beam3 , however I can put it in the key command
(et,1,beam3) this element doesn't allow me to have real constants for
circular cross-section.
When I use beam188 and beam189 the shape of bending moment diagrams don't
look as good as the shapes that I get from 2D elastic beam3, and the
results are different slightly. can some one tell me if there is away that
I could define 2d beam3 as circular cross-section please?
I have tried to use Sectype,Ctube, and secdata for beam3 but doent work
either.
Your help means a lot. Thanks you all in advance.
regards ,
Salam
Xansys-temp mailing list
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The communication transmitted through e-mail or any other modes with the attached files are intended solely for the use of the addressed individual or entity for official purpose only. It contains information that is confidential and protected from disclosure. It must not be printed, read, copied, disclosed, forwarded, distributed or used (in whatsoever manner) by any person other than the addressee. Unauthorised use, disclosure or copying is strictly prohibited and may constitute unlawful act and can possibly attract legal action.
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Roshan,
Beam 188 has many advantages compared to Beam 3. Using ASEC section data,
an arbitrary section constants can be input to Beam 188 for your
requirements.
Regards,
Santhosh M,
Ansys India, Bangalore.
sent from mobile, excuse typo.
On Oct 15, 2015 10:53 AM, "Roshan A D" adroshan@aerb.gov.in wrote:
Hi,
One offshoot doubt arising out of the detailed explanation on beam188
given by Mr. Santhosh:
For modelling of partially/fully cracked RCC beam/column elements as well
as to change torsional stiffness (which drops down drastically upon
cracking), beam3 used to offer full control on inputs as Ixx, Iyy and Jxy
could be individually changed by user to reflect the corrections to
stiffness with respect to each axis of rotation.
As beam3 is in dump yard, has anyone come across a way that the above
(i.e., individual change to bending and torsional stiffness without
affecting axial and shear stiffness) could be achieved in beam188?
Thank you very much in advance.
regards
-Roshan A.D
SSED, AERB, Mumbai
On 10/15/2015 9:51 AM, Santhosh Murugadass wrote:
Salam,
BEAM 188 uses linear shape function by default. Which means, in order to
capture the 2nd / 3rd order variation of the bending moment with in A
physical beam member, the member must be meshed with more number of
BEAM188
linear elements. As the element size comes down, bending moment diagram
(BMD) match with analytical BMD. However, linear shape function of the
BEAM188 can be changed to cubic shape function using KEYOPT 3=2. Then
fewer
elements are sufficient to reproduce analytical BMD. Please refer BEAM
188
element page in ANSYS help manual, you will get to know a lot more about
its proper usage.
BEAM-3 has cubic shape function by default so it produces correct BMD
without any additional user settings. BEAM-3 uses equivalent rectangular
cross section always, based on A,I and t inputs.
I hope now you can produce the correct BMD for a beam of circular cross
section with UDL using BEAM188 + KEYOPT 3=2 + Sectype,Ctube.
Note : Post a new topic in fresh email. Do not continue in existing email
threads.
Regards,
Santhosh M,
ANSYS, Bangalore, INDIA.
On Wed, Oct 14, 2015 at 11:35 PM, Salam Hassan <
salam.hassan@manchester.ac.uk> wrote:
Hi every one, I am trying to apply UDL on pile element but it doesn't
work, I know how to do it for beams , but I need to apply on pipe16. I
also
tried to find 2D elastic Beam3 , however I can put it in the key command
(et,1,beam3) this element doesn't allow me to have real constants for
circular cross-section.
When I use beam188 and beam189 the shape of bending moment diagrams don't
look as good as the shapes that I get from 2D elastic beam3, and the
results are different slightly. can some one tell me if there is away
that
I could define 2d beam3 as circular cross-section please?
I have tried to use Sectype,Ctube, and secdata for beam3 but doent work
either.
Your help means a lot. Thanks you all in advance.
regards ,
Salam
Xansys-temp mailing list
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Appliance of Trend Micro
This mail has been scanned by Interscan Messaging Security Virtual
Appliance of Trend Micro
Disclaimer:
The communication transmitted through e-mail or any other modes with the
attached files are intended solely for the use of the addressed individual
or entity for official purpose only. It contains information that is
confidential and protected from disclosure. It must not be printed, read,
copied, disclosed, forwarded, distributed or used (in whatsoever manner) by
any person other than the addressee. Unauthorised use, disclosure or
copying is strictly prohibited and may constitute unlawful act and can
possibly attract legal action.
If you have received this message in error, you should destroy this
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Hi Santosh,
Thank you very much for the quick feedback.
regards
-Roshan
SSED, AERB, Mumbai
On 10/15/2015 11:09 AM, Santhosh Murugadass wrote:
Roshan,
Beam 188 has many advantages compared to Beam 3. Using ASEC section data,
an arbitrary section constants can be input to Beam 188 for your
requirements.
Regards,
Santhosh M,
Ansys India, Bangalore.
sent from mobile, excuse typo.
On Oct 15, 2015 10:53 AM, "Roshan A D" adroshan@aerb.gov.in wrote:
This mail has been scanned by Interscan Messaging Security Virtual Appliance of Trend Micro
Disclaimer:
The communication transmitted through e-mail or any other modes with the attached files are intended solely for the use of the addressed individual or entity for official purpose only. It contains information that is confidential and protected from disclosure. It must not be printed, read, copied, disclosed, forwarded, distributed or used (in whatsoever manner) by any person other than the addressee. Unauthorised use, disclosure or copying is strictly prohibited and may constitute unlawful act and can possibly attract legal action.
If you have received this message in error, you should destroy this message and may please notify the sender by e-mail. Thank you.