I have CATIA geometry reader installed and work fine.
The question is just for curiosity on how Hypermesh takes care of CATIA geometry format in importing.
I just learned that when Moldflow import CATIA geometry, what it did is two steps (transparent to us). First convert CATPART to STEP, and imported into Moldflow.
Just wondering is Hypermesh do the samething in importing CATIA geometry into Hypermesh?
Thansk.
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Re: How hypermesh handle CATIA CAD format in import?
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FATAL ERROR # 8011
I am doing the tutorial OS-2098: Topology Optimization of an Excavator Arm Model, and when I tried to run the optimization I get the following error message:
** FATAL ERROR # 8011 ***
DELETE detects overwriting of data block: linkb.
* DATAMANAGER ERROR in subroutine "datamd".
I followed all the steps of the tutorial so I think one is missing...
Any idea on what is wrong?
Thank you.
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Re: Error 4001
To install the latest update for HyperWorks please go to the link below, remember you must have a client log in (you must be registered as a client)
http://www.altairhyperworks.com/ClientCenterHWUpdateDownload.aspx?pro_cat=HyperWorks
If you have problems accessing the above link please go to
http://www.altairhyperworks.com
1. Once here please go to the support tab > and then software downloads
2. Click on HyperWorks
3. Click on product updates on the left of the page
4. Select the version of HyperWorks currently installed inyour machine
5. Click on the update you wish to install
6. Choose the operating system of the machine where HyperWorks is installed,
7. Then click on download, click on read me for instructions on installing the update and release note for information on the update
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Re: FATAL ERROR # 8011
Hi,
can you please let us know what are all the updates installed on your machine? please use the link below to know the updates:
http://www.altairuniversity.com/support-forum/?mingleforumaction=viewtopic&t=252
Please update to the latest software patch which is available from http://www.altairhyperworks.com/ClientCenterHWUpdateDownload.aspx?pro_cat=HyperWorks
please run the analysis after the update. If the error still comes-up, please let us know :)
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Loadstep for joint model
Dear administrator,
I would like to ask which loadstep should I define for using FE-joints.
The loadstep linear-static ignores the 1d fe-joints that I have created, I could fix the model using springs with 0 stiffness in the direction i want to unconstrained the model, but I would like to know how to use the FE-joints. Or are this entities available just for MBD analysis?
ps: The simplified model i am using is in attached
Best regards
Vitor
![Image]()
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Re: Loadstep for joint model
Hi Vitor,
Joints which were created will work for OptiStruct Multi Body Dynamics simulation.
In such case you can use analysis type as multibody dynamic while creating loadstep.
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Re: Error 4001
Update installed, keep on getting the same error message..."NLGEOM subcase 1, starter running ...
*** ERROR # 4001 ***
Running RADIOSS starter, 1 ERROR and 0 WARNINGs have been detected.
They are listed below.
STARTER ERROR:
ERROR id : 727
** ERROR IN MEMORY ALLOCATION
ERROR ALLOCATING TABLE BUFFSG :
NLGEOM subcase 1, starter finished"
What does error 4001 or error 727 mean?
Thank you once again for your help
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Re: FATAL ERROR # 8011
I have updated to the latest version and now the problem is solved. Thank you.
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How to couple optistruct with Acusolve?
Hi all,
I am thinking about using Optistruct and Acusolve together to optimize the composite layup of a front wing of a race car. My problem is that I am not clear about how to extract fluid simulation result of Acusolve and apply it as boundary condition of the structural optimization in Optistruct. I have watched demos regarding practical fluid structure interaction between radioss and Acusolve but unfortunately, this part is not covered in the official demo. Does anyone have any suggestion?
Thank you!
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Re: FATAL ERROR # 8011
:)
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Re: Error 4001
Hi,
During bulk to block conversion (NLGEOM) solver writes a separate component and property for each element in the .rad deck and this creates a memory issue.
Since you have orthotrpic properties, please try the below procedure:
1) Create a local system as per your analysis requirement (assuming X major axis)
2) Assign all the elements to the created local system
3) run the analysis
this should reduce the number of components and properties during conversion.
if the error still shows-up we may need your model file. Please use the dropbox link below to share the model:
https://ftin.india.altair.com:8443/filedrop/~BDR1DN
Also,
is there any specific for running a NLGEOM analysis for a 3 point bending model?
can you run the same with NLSTAT and check?
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Re: How to couple optistruct with Acusolve?
mscwu,
It depends on which boundary condition you need extracted and used in the optistruct analysis.
If it is pressure for instance, you can easily extract a txt file from acusolve results with the pressure value for each node, use HyperMesh linear interpolation option to use the same text file to apply pressures on the nodes while pre processing for Optistruct and you have hence coupled Acusolve and optistruct.
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Contact problem in two different sub-cases.
Dear Administrator,
I would like to know how can I properly use multiple sub-cases in a contact problem.
I have done a simple example (attached) in which in the first sub-case I apply a load that closes the contact, in the second loadcase I would like to study how this contact will react to an horizontal force.
I have used the CNTNLSUB card in the second loadstep however the contact is not performed in the second analysis.
I tried to applied the same vertical load in the second loadcase as well and also did not worked, how could I perform the analysis in such a way that:
Loadstep 1 : the contact is closed (using a vertical force)
Loadsetp 2 : An horizontal force is applied to the contact is already closed
Sorry for the simple question.
Thank you for the help.
Best regards
Vitor
![Image]()
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Re: Contact problem in two different sub-cases.
Hi Vitor,
What should the results actually look like? can you please describe the expected results?
Secondly you do see that the loads in the horizontal direction are unopposed and will create extensive deformation or in fact just displacement as the top component is not constrained in that direction at all. what is the reasoning behind such boundary conditions?
See image below where I compare results for different run parameters, see top left window where in the loadstep I have used cntnlsub with scid and in scid I have referred the previous loadstep, in this analysis I have also removed the load on the top plate in the vertical direction leaving only the horizontal load.
Just below that , i.e. bottom left i run the analysis with the load in the vertical direction in the top plate again using the scid option
The results on the left are from analyses run as you have sent it. cntnlsub in all conditions seems to give us similar results.
![Image]()
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Re: Contact problem in two different sub-cases.
Hello Rahul,
First of all I would like to thank you for the help.
About the contact I am sending you a simplified analysis in which I have two identical loads in two different load steps. What I expect in the results is that:
In the beginning of the first load step the contact is open, then in the end of this loadstep the contact is close due to the application of the first force F1.
In the beginning of the second step the contact should be closed (as in the last step of the first loadcase) and then the second load F2 would keep the contact closed during the second load-step.
The motivation is to understand how OS leads with multiple load-cases when using NLSTAT.
The problem that I am facing is that, in the beginning of the second step the contact is open, and I cannot understand why this is happening once that in the last step of the first loadstep it was closed. In addition, the results indicate that the displacement in both cases was 0.5 mm, which means the gap was closed two times. However the stresses in the second loadstep are double than in the first 8O . I cannot understand why this is happening, once that OS uses Newton-Method for NLSTAT, then I would expect that the second loadstep should use the geometric stiffness matrix from the last iteration of the first load-step in which the gap is closed and to run the second loadstep.
Thank you again for your help
Regards
Vitor
![Image]()
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VWT - nothing happens after pushing RUN button
Hallo,
I've got the problem that after I push the run button for my model nothing happens (local).
I can see "Starting exporting/ running" in the lower left corner and a window appears with " executing...etc" for few seconds.
After this the status is at 2%....for hours and nothing happens. There is no CPU usage or something.
What's the problem and how can I solve it?
Here some infos of my system:
- i7 4702MQ
- 16 GB DDR Memory
Thank you!
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Re: VWT - nothing happens after pushing RUN button
Dominic,
This is most likely due to quality issues with the model, this is often resolved by doing a good quality tria surface mesh.
Please make sure you export the model from HyperMesh in “Nastran(Fluent)” format, available in the CFD export tab.
It is imperative that you go through this guide and follow it step by step to import into vwt or acuconsole.
http://training.altairuniversity.com/cfd/efficient-cfd-meshing-workflow/
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Re: Contact problem in two different sub-cases.
Hi Vitor,
We should not expect the 2nd subcase to start from the end position of the first one.
CNTNLSUB only carries over the nonlinear evolution data, for example, the gap status or plastic deformation, but not displ/stress, loading, boundary conditions, etc.
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how can i simulate Friction stir welding
From Comment in the Academic Training Center
Dear Sir,
i have came to know that that friction stir welding module is made by using the hyperxtrude. so if you can please tell or send me a video that describes how can i simulate Friction stir welding in detailed manner., i would be obliged.
Indra
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Re: how can i simulate Friction stir welding
Indra,
Please start with the 12.0 Help guide on friction stir welding,
HyperWeld > Friction Stir Welding User's Guide
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