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Hi I am having problem, with my studenti edition license Optistruct/hypermesh
Here is the problem: Firstly, I moved my license from a computer to another like as described by altair, in the previous computer i didn't have this problem but now I do. the property, appear as"ungrouped", I cannot set a load case, and also i can't modify a loadcase, the simulation run, but when i open the output file…
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DRESP1, ATTA=GEODEFR: 変形後のジオメトリ情報を使った応答
始めに OptiStruct 2025.1 では、変形後のジオメトリ情報、つまり距離や面積を応答にすることができるようになっています。 カードは DRESP1 です。 https://help.altair.com/hwsolvers/os/topics/solvers/os/dresp1_responses_attributes_bulk_r.htm 対象となるジオメトリ情報はこちらです。 https://help.altair.com/hwsolvers/os/topics/solvers/os/dresp1_geometric_response_bulk_r.htm 今回は、変形後の２節点の距離を使った最適化を行う例題を示します。…
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hypermesh question about layer
Hi guys, i need help. what are z1 and z2? I set the normal orientation and correct me if I'm wrong but positive mean top and negative mean bottom. When i go to hypermesh, , but now how can i know if z1 indicate top ,and z2 bottom? Because by default i see top layer z2 and bottom z1. And so i wanted to know what z1 and z2…
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hi there i am having problem with my hypermehs/optistruct license about this error feature not found
Activating features... [11/14/25 10:12:03] Trying to activate... [11/14/25 10:12:03] Deactivating features... [11/14/25 10:12:03] Activating... [11/14/25 10:12:03] Activating required features [11/14/25 10:12:09] System Error during checking out: Altair License Manager: License error Feature(s): GlobalZoneEU, HyperWorks,…
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Not able to select bolt type
Hi guys, So, basically I have this problem: I’m not able to select the bolt type when creating a connection. I have all the available add-ins installed and I’m using the OptiStruct solver.
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OptiStructの線形モデルをTwin Activateに取り込む（構造音響連成対応）
以前、Altair OptiStructの線形モデルをAltair Twin Activateに取り込む方法を紹介しましたが、 OptiStructの構造要素のみを対象としていました。 OptiStructの線形モデルをActivateに取り込む - Altair Community 今回は、OptiStructの構造音響連成モデルに対応しましたので、その方法を紹介します。 本記事で使用したモデル・スクリプトはこちら。 https://us.v-cdn.net/6038102/uploads/EJRDAQIDN3P5/dmigpch-reader-abcd-acoustic.zip モデル 下記チュートリアルを流用します。 OS-T:…
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Save invalid elements to user mark?
Hey, every time I'm exporting my solver deck files of my RADOPT opimization the question appears: Save invalid elements to user mark? Yes or No I have found a Tcl command hm_getusermark elems does this show all the elements or just the invalid ones? Because I get a huge number of elements if I type in that command. So my…
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Internal programming error
Hey, every time I run a RADOPT topology optimization the Solver fails and I get this message: *** INTERNAL PROGRAMMING ERROR *** in file "datasetFtoC.c", at location # 488. ERROR DATA: igicmt -1234 Dset ID out of range what can I do? Thanks for your help!
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When Exporting to Optistruct in Hypermesh, How to keep components in optistruct file?
There are many components in hypermesh. After exporting to Optistruct, Components shrink to limited numbers of property. I don't know how to keep the components in optistruct. Thanks YJ
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Interpretation of Bolt Loosening and Failure in Nonlinear Simulation (OptiStruct)
Hi I’m performing a nonlinear structural analysis in Altair OptiStruct for an automotive assembly containing several bolted joints. Each bolt is modelled using 3D solid (hex) elements, and contact interactions are defined between mating components. The analysis includes two sequential load cases: Assembly Load (Bolt…
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HPC OS job failed due to Maxwall time..can i restart from the failed job?
Hello, HPC Optistruct job failed due to Max wall time given less. can i restart from the failed job? its almost 98% completed and failed due to max wall clock time reached. Thanks in Advance.
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rubber thermal analysis
My current requirement is to analyze the thermal deformation and stress of an entire rubber material structure when its temperature decreases from the initial 100℃ to 50℃. However, I found that the resulting contour plot from the analysis shows zero values, which suggests that the coefficient of thermal expansion is not…
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Damping in Optistruct.
Hello, In an OptiStruct model where both PARAM,G and SDAMPING cards are defined, how does the solver determine which damping method to apply during a Modal Frequency Response (MFREQ) analysis? What is the interaction between these two damping definitions in this context? Thanks,
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Element quality between Nastran and Optistruct
Hello. My client provided me with a mesh that was run with Nastran. When I run it with Optistruct, my calculation fails because some elements of my mesh don't meet the meshing criteria. This is strange, as the Nastran calculation works. The meshing criteria seem different and more restrictive with Optistruct. With the…
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Modal participation for other directions than the main rigidbody directions
Hello all, There is the EFFMASS tool in hyperworks: PARAM, EFFMAS I am wondering if there is a way to modify the vector v in to have the modal participation for other cases (since my structure is to be excited via the connections to another structure, rather than the general free body directions). Thank you!
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Compute Console (OptiStruct) Batch Mode Execution & Process Termination via Batch Mode
Hi folks, I'm working on automating OptiStruct runs in batch mode. I’m using the following command to run the solver: "Solver_path.bat" "Fem_file_path.fem" -core IN -nt 1 -np 12 Can someone confirm if this is the correct format? Also, is there a recommended way to kill the running Compute Console (OptiStruct) process via…
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Maintaining Bending Plastic Deformation in Hypermesh
Hello, I am working on a simulation to look at the resultant deformation of a part after a bending load is applied. For simplicity, it can be thought to be a fixed-free cantilever. I am applying a load that should exceed the yield stress of the material, but when I release the load I want the part to maintain the resulting…
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Modal Frequency with PCOMPG and PCOMPLS
Hi, I have to analyse a Al sandwich composite deck of 700mm*700mm. For this, 1. I modeled deck with shell elements and assigned PCOMPG property with 3 plies 2mm Al face sheet + 60mm Honeycomb Core + 2mm Al face sheet. 2. Observed modal Frequency with BC at center of plate is around 600Hz. 3. Later i have to mount a…
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Several questions about Motionview
The first question: Regarding impact contact, for example, if I have two rigid bodies stacked up and down, and I set up impact contact, but I find that these two rigid bodies will produce contact vibration, that is, one rigid body will bounce up and down on the contact surface of the other rigid body. How can I quickly…
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ERROR #606 Element 253026 references PCOMPG 2 without being included in any STACK.
I am getting the following error message: *** ERROR # 606 *** Element 253026 references PCOMPG 2 without being included in any STACK. but when I check the element, it says that it is referenced by a PCOMPP card. I also have the element under a shape that is referenced in a laminate. What should I check/change?…
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Unable to convert Hypermesh model with Optistruct profile to Radioss
While trying to convert the Hypermesh Optistruct profile model to Radioss profile , iam getting this error 2. Earlier, i was able to complete the work in Radioss profile, but whenever i reopen the model it used to be in optistruct profile even though saved in Optistruct 3. Now when i open the above model iam getting the…
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EDEM flexible surface
Hello, everyone in the community. I currently want to do a flexible model of corn leaves ( in line with the actual physical behavior, such as bending ) in EDEM, as if hypermesh and EDEM co-simulation can be done. Do you have this information ?
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Some confusion in Craig chang contact flexible body in Motionview
In Motionview, CBC's flexible body can be set for contact calculations with the flexible body. Now I see two settings below (including contact models at rigid nodes, as shown in my screenshot), but I have looked at the help documentation and don't quite understand how to set them up. Assuming I have a bearing, how should a…
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Tie contact data field #4 is incorrect
What does this mean and how do i get to the dialogue to fix this? I got the following error message: {C:\PROGRA~1\Altair\2024\common\tcl\tcl8.5.9\win64\bin\tclsh85t.exe} C:/PROGRA~1/Altair/2024/hwdesktop/../common/acc/scripts/hwsolver.tcl {N:/Supermidleage/Tub FEA/087464_B_1-087464-V16_Tub_1.fem} -screen -dir -solver OS…
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MDS 2022 & OptiStruct 2022 Co-Simulation Stuck Reading Fiber Orientation File
Hello everyone,I’m working on short fiber injection molding co-simulation using Multiscale Designer 2022 (MDS) and OptiStruct 2022. So far, I’ve successfully generated the multiscale material model file (mdsMAT1.dat) and the fiber orientation file (mdsFiberOri1.dat) via MDS. Additionally, MDS outputs the…
