-
when simulating species (H2S and Co2) in open flat terrain and the release source is a surface on ground level. is it possible to enable buoyancy in hyperworks CFD for species transport?
I have been trying to replicate previous work on gas (H2S) dispersion in flat terrain where the H2S source is a surface on the ground; its dimensions are 20m x 10m. The CFD domain size is 40m x 30m x 3m. The density and viscosity of H2S and air were defined linearly piecewise, just similarly to this tutorial:…
-
Inspire does not open Part / Step created in Solid works
Hello, i created a part in Solidworks which i then tried to open in Altair Inspire 2022.2- Optistruct. The part name shows up on the object tree but the model does not show. The mass of the part is defined as 0. The Solidworks part does not show any kind of problems within Solidworks. I can also open the STEP in other CAD…
-
USE dresp3 to sum up element stress component as a external response for topology optimization
Dear developers and users, I need to use the sum of stress component Sigma11 over each elements as objective function. The thing is I have a model with a fine mesh so I can not use DRESP2. I think I need to creat my own external response using DRESP3 instead. Is it possible to callout stress component Sigma11 of each…
-
coreless Axial flux design with single stator and dual rotors
MY DESIGN IS CORELESS AND REQUIRES NON-SLOT, I HAVE DIFFICULTY IN REMOVING THE SLOT FROM THE MACRO AFIR. HOWEVER IN BUILDING MY GEOMETRY, PERFORMING CIRCULAR REPETITION IN 3D, I HAVE ISSUE WITH THE ROTATION AXIS
-
Saturable inductor array from text file
Dear all, I have the following problem: I have a program/code which generates a high frequency model including parasitics,... and saturation effects for an inductor. To use this model in PSIM I thought about a submodel which uses parameters form a text file. Therefore, I wanted to generate a text file including the…
-
I am trying to use PoI partclass api for getting scale but it is not working for any parthandle.
set t [clock clicks]; hwi OpenStack; hwi GetSessionHandle sess$t; sess$t GetProjectHandle proj$t; proj$t GetPageHandle page$t [proj$t GetActivePage]; page$t GetWindowHandle win$t [page$t GetActiveWindow]; win$t GetClientHandle client$t; set Id_ActiveModel [client$t GetActiveModel]; client$t GetModelHandle mod$t [client$t…
-
Hyperworks exports suppressed edges to Step file too
Hi All I need to clean up a geoemtry and suppress some edges which belong to small holes. But no matter which function I use, like Patch or fill holes or plug, and then suppress the remainning edges, when I export the geometry to Step file for my analysis purposes in Abaqus, I still see those suppressed edges there. Does…
-
How to calculate bending moment from ship model
Hi all, How to calculate the time history of bending moment of ship structure. I am performing the UNDEX simulation and interested to calculate the bending moment at the number of cross-sections along the length of the ship. I have to define this at the pre-processing stage or it can be extracted in Hyperview. If anybody…
-
Problem with T01 file corrupted
I have created a simulation of 3 point bending test for my Formula Student team. The problem start when I want to plot Force-displacement graph, in Hypergraph. It always tell me that is unable to recognize my T01 file, where is located the results. I tried also to convert it to .abf in HGTrans, but still "can not find the…
-
how to transfer force between parent and child
Hello! I want to konw how to transfer force between geometries, like between car and wheel. Example like EDEM car simulation ( https://www.youtube.com/watch?v=7Aw1lUGUqVc ). I tied parent and child geometry, but it seems like force of child cant be transfered to parent. Thanks! Fang yanwei
-
Convergence problems in a transient simulation
Hello I am making a transient simulation of a current transformer, but I have convergence issues. Convergence issues occur when the magnetic material of the core is saturated, can you help me the to solve the convergence issues? I am attaching the flux model. Thanks in advance for the support. Efrain
-
Questions about motion view
I have some questions related to the Motion View software. The first one is if I can simulate the whole car in this software. The second is if I can simulate ready made front and rear suspensions from the software which I can't find. And the last one is if you have any material so I can learn to use the software.
-
Plasticity formulation in optistruct?
Hello, Does anyone know how plasticity is formulated in optistruct? Reagrds!
-
ACU-T:2100 wrong geometry
Hello everyone. Based on the new tutorial uploaded by Altair (ACU-T 2100, HW CFD 2022.2), I got mixing elbow instead of airfoil when i clicked the provided geometry link;…
-
GPU Utilization
Hi EDEM Engineering, I have simulated with one V100, but I found that GPU-util is varied from 100 to 0 then to 100 constantly. I thought it is because code of edem is still in CPU and GPU need to transfer data every time step, which doesn't make simulating with GPU significant faster than with CPU. I want to konw how…
-
Topology optimization leads to zero geometry
Hi! I have tried running a simple topology optimization on this simple part. The grey parts have support and a load in the middle. The grey parts are a material that is uncompressed (ie very high elasticity and strength) and the part in aluminum. When i then run the optimization it turns out like this. It doesn't matter…
-
case data post process
-
Application of standard rolling friction model to geometry in EDEM.
Hello everyone, I noticed that it is mentioned in the help document that EDEM ignores the rolling friction calculation of geometry by default, but it can be opened manually. And the distance of the contact point from the center of mass (Ri) is required to calculate the torque of rolling friction. What I want to know is…
-
Question: Will the sliding friction be reported in the EDEM Analyst?
Hello everyone, In my last question, I asked about the fact that EDEM can only derive spring forces without reporting damping forces： https://community.altair.com/community?id=community_question&sys_id=7c2a4e31db4d91d0cfd5f6a4e2961990 I still have some puzzles about the details of software processing. When sliding occurs,…
-
Question: Calculation of relative velocity in EDEM.
Hello everyone: Thank you for answering my questions, which helped me a lot. I have doubts about the calculation of relative velocity in edem. When I use the H-M model, the calculation of damping force needs to use the relative velocity, which is described in the document as "calculation at the contact point". How do I…
-
Question: Normal force and tangential force in EDEM calculation.
Hello everyone, I have two questions about contact force： 1.I see in the help document this sentence： I wonder if this means that when I use the H-M model, the normal force derived from edem does not include damping force? Is the tangential force the same? Or does the derived normal force and tangential force include…
-
the Hertz-Mindlin with JKR contact model: A question about the negative overlap.
Hello everyone, In the EDEM 2020.2 document, the normal force-negative normal overlap is described as follows: In the description of the document, the negative overlap is allowed, and will still produce cohesion after particle separation. But the document mentioned at the end: Does this mean that it is impossible to…
-
JKR_V2: Do I need to open the contact radius?
The use of JKR_V2 model described in the EDEM document requires the contact radius needs to be opened. How can I calculate the size of this contact radius and enter it?
-
Panopticon 2020.2 Now Available
Panopticon 2020.2 is now available to all licensed users and we recommend that all customer organizations plan your upgrade now. Click here to read the release notes for complete details on changes in this new version. We have a short video that demonstrates the major changes in Panopticon 2020.2 in the Panopticon…
-
3Dconnexion SpaceMouse
Any reason why 3Dconnexion SpaceMouse doesn't work with SimSolid?