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Can we get the stiffness matrix as an output of a Radioss simulation?
Hi, I am using Radioss 2022.3 and I'd like to get the stiffness matrix as additional output of the simulation. I didn't find any way to do that for the moment. Is it possible? If not, do other solutions exist to get this matrix (with other solvers maybe?) Thank you in advance.
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"EDEM Stuck at 2% While Converting SolidWorks File (Tried STEP 203, 214, and STL)"
"I created a CAD file in SolidWorks and tried to import it into EDEM, but the conversion process gets stuck at 2% and does not progress further. The file is small and consists of only one part, yet EDEM cannot load it. I have tried exporting the file in different formats: ✔ STEP AP203 ✔ STEP AP214 ✔ STL But none of them…
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uneven stress on pressurized barrel haz
I encountered an issue with a pressurized barrel. To model the welding between two barrels, I applied different material properties to simulate the Heat-Affected Zone (HAZ). The mesh of this component is linked to the other component (with the initial material properties) through nodal equivalence. The geometry has the…
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Import CAD file in EDEM V2022.3
Dear Altair Community, I am encountering an issue when trying to import CAD files into EDEM v2022.3. The loading bar gets stuck at 2%, preventing the import from completing. However, the same CAD file imports smoothly in EDEM v2024.1. I have tried several troubleshooting steps, such as changing the file location to a…
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Output Response for specific component in Hyperstudy
Hello, I would like to investigate the system behavior of a Hypermesh model in Hyperstudy. The FE model consists of various components or assemblies. I have parameterized the .fem file and performed a nominal run. Now, I would like to use the .h3d file to output the maximum stress for specific components or assemblies.…
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Modeling Cyclic Loading Process in UCS Simulation with EDEM API
Hi Altair Community, I am trying to model a UCS simulation with a cyclic loading process, and I have some questions about whether this process can be achieved using the EDEM API. In the experimental process, cyclic loading is automatically managed by a stress gauge: When the stress on the rock reaches a critical upper…
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Is it possible to use connectors to connect 1D to 1D elements?
I've got multiple 1D only components meshed with CBEAM Elems. Now I'm trying to connect them together at points where bolts would be using point connectors but the link detection isnt working resulting in the connector failing to realize. The only way I've found so far to make it work is by selecting Link 2 manually. In…
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Decimal precision with EDEM
Hi, I am currently using Altair EDEM 2022.3, coupled with HyperStudy, for model calibration purposes. During the process, I encountered an issue related to decimal precision when inputting optimized parameters. After running the HyperStudy optimization, I obtained a set of optimized parameter values. However, when I…
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在openradioss中使用Open MPI v4.1.2计算1.如何提升CPU的使用效率？2.是否需要关闭超线程？3.AVX512如何开启支持？4.open radioss计算核数是否有限制？
在openradioss中使用Open MPI v4.1.2计算1.如何提升CPU的使用效率？2.是否需要关闭超线程？3.AVX512如何开启支持？4.open radioss计算核数是否有限制？
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Question: Dynamic Stiffness of Rubber Considering Geometric and Material Nonlinearities
I am planning to perform a simulation on the Dynamic Stiffness of Rubber. Before introducing the model, let me define a few terms for clarity. The Static stiffness of rubber is referred to as the Static Spring Constant, which is the load corresponding to axial displacement, with units of N/mm. On the other hand, the…
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[HyperMesh] Associate nodes to surfaces
Overview: Associate nodes to multiple surfaces at once Prerequisite: This is for HyperMesh classic interface up to 2022.3 Usage/Installation Instructions: Load this script via File » Load » Tcl/tk Select surfaces you want to associate Select nodes to associate Insert the tolerance between each surface and node Script file:
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Error in accessing card image of material in batchmode
I have a script which tries to fetch the card image of the materials. I am trying to filter the materials with card image type "MATERIAL" In order to achieve this, I am using hm_getvalue mats id=$mat_id dataname=cardimage hm_getvalue mats id=$mat_id dataname=solverkeyword These command works fine when I use in GUI mode.…
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Error in accessing card image of material in batchmode
I have a script which tries to fetch the card image of the materials. I am trying to filter the materials with card image type "MATERIAL" In order to achieve this, I am using hm_getvalue mats id=$mat_id dataname=cardimage hm_getvalue mats id=$mat_id dataname=solverkeyword These command works fine when I use in GUI mode.…
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Sync include files which are modified by a text editor
Hi all, I have a lot of include files which I export without Hypermesh comments. I change some Elements, Nodes or whatver with a text editor. Now I want to update the Hypermesh file. What is the best way to do so? I tried some ways. But all approches need a lot of steps where mistakes might happen. (Import, overwrite,…). I…
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[연재글 : 누구나 쉽게 시작하는 HyperWorks intro]
이번 시간에는 HyperMesh, HyperView, HyperGraph 플랫폼이 통합된 HyperWorks에 대해 소개해보도록하겠습니다! 우선 유한 요소 해석을 위한 전처리 프로그램으로 HyperMesh를 많이 사용하고 계시죠? HyperMesh는 Mesing 및 Setup과 관련하여 다양한 기능을 제공하고 있습니다. 많은 기능을 제공하고 있기 때문에 작업할 수 있는 방법도, 사용할 수 있는 패널도 어마어마하게 많이 있습니다. 이런 기능들을 이제는 모두 HyperWorks에서 구현해보실 수 있습니다! 일반적으로 해석 모델을 구성하는 그 과정에 맞춰서, 사용하실 수 있는…
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CAE 유한요소해석 모델링 순서도
유한요소해석을 위한 모델 구성에는 다양한 방법과 순서가 있습니다. 모델 형상, 해석 목적, 작업 스타일 등 상황에 따라 모델링 순서가 달라질 수 있지만, 모델 구성 작업을 하실 때 참고해보실 수 있는 순서도를 안내드립니다. Geometry 작업 : CAD 데이터를 불러와서 Geometry Cleanup 및 midsurface/midmesh 추출 Meshing : 모델의 형상 및 해석 종류에 따라 1D, 2D, 3D를 mesh 생성 Analysis Setup : 해석에서 사용할 경계조건, 재료물성 및 해석 옵션들에 대한 설정
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MotionView - Angular Momentum Conservation
Hi! Is angular moment conservation present in motionview? My simulation contains following - base-plate which rotates and boxes stacked on top of it. Every object has mass and inertia defined by user and is represented with point mass (body) and graphical geometrical object. In the simulation the whole assembly spins up to…
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Missing some parts while importing <.3dm> format file types
Hi, I am trying to import <.3dm> format file type, previously it was working well but in the recent times some parts are missing when I try to import the geometry. Has anyone experienced with importing this file type and faced this issue?
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How to assign properly an allowable value for a Python Certification Method in composites material
Hello there, I want to create a Failure Theory using the Certification Method tool, using a simple python script. I assign the Xt, Yt, etc with the corresponding Material allowable defined in the MAT8 card but when running the method it shows an error saying "Warning, LongTensile StressLimit not available for element". I…
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Density Variation Calculation over Time for MAT/LAW1 and MAT/LAW6 in RADIOSS
When using MAT/LAW1 or MAT/LAW6, an initial density is set. How is the density change over time calculated in these cases?
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Why is the section plane moving in visualization mode (Post) ?
I have an issue related to the visualization of a CFD analysis. When I put a section plane and animate it, it moves, instead of showing the movement "inside" of it. Such as the current movement as the time passes. Before, when I was studying an individual piece it would let me, but now I have this big cluster of pieces and…
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HELP : finding law paramaters for ballistic impact in 3D ((Hydro) Johnson Cook), ball and plate
Hello altair community, For a class project, we are trying to simulate a ball piercing through an aluminium plate at high speed. We did a first try with plate in Shell element using the Johnson Cook law, and the results were accurate enough. Now we try it in 3D, but the simulation is unrealistic : Message we get : EXCEEDED…
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ERROR 1026
Hi I am trying to perform analysis of a model that consists of 1d beam elements and 3d tetra elements. I am getting this error 1026 duplicate id's found. I have tried multiple techniques to solve like renumbering and deleting duplicate elements but still the problem persists. Can anyone please help?
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Radioss: Engine trouble shooting
Introduction The original article is this, This article explains how to determine the cause of an error when the engine _0001.rad fails to run to the end. This is my own method, and it is not the best or the only way to find the cause of the problem. You can modify my methods and find your original better way. Methods A,…
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How can I see the area and velocity of a cross section in RADIOSS?
I am currently performing a coupled fluid-structure analysis in RADIOSS. I would like to output the time history of the cross-sectional area and flow velocity at an arbitrary cross-section of the fluid (ex: surface 50mm from the inlet boundary, as shown in the image). How can I do that?