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New Community Session - Optimized Component Selection for Multi-Stage Power Conversion Systems
We're thrilled to announce the next insightful session in our popular Power Conversion and Motor Drive Chat Series, focusing on a crucial aspect of power electronics design - Optimized Component Selection for Multi-Stage Power Conversion Systems What You'll Discover in This Session: Optimize Transistor Selection: Learn a…
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Exciting Update! New Sessions added to the Community Electromagnetic Chat Series
Hi All, Happy New Year! We have an exciting update for you. The Community electromagnetic chat series will continue this year and we already have the schedule ready for January 2026. This monthly series is designed to empower industry experts by providing them with insights into the latest features, workflows, and…
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Community Champion of the Month - December, 2025
The Community Team would like to introduce the December Champion of the Month, Zhang Xinxing @Xinxing_Zhang. Zhang Xinxing currently works as a body structure CAE engineer at SAIC Motor. He has been actively involved in the Community for the past year. Professionally, he specializes in structural simulation and programming…
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Community Champion of the Month - November, 2025
The Community Team would like to introduce the November Champion of the Month, Subhurathinavel Natarajamoorthy @Subhu . Subhurathinavel Natarajamoorthy is a Virtual Validation Analyst at CNH (a global leader in the agriculture and construction sectors) who enjoys engineering the future of agriculture. His team builds…
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📅October and November Community Roundup + Important Announcement📣
Hi Everyone, Sorry for the delay in posting our community highlights and achievements for October and November. There has been a lot of going on, but we didn't want to overlook the great content and contributions for these months. So without further ado, let's jump right in. 📣 Important Announcement - Altair Support is…
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Altair Support is Moving to Siemens Support Center!
Hello, amazing Altair community! We're buzzing with excitement to welcome you to this dedicated space, created just for you as we embark on an important transition: moving Altair's support infrastructure to the Siemens Support Center. This is a big step, and we're committed to making it as smooth and transparent as…
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Upcoming Altair Community Events & Your Feedback Needed
Hi Everyone, As we look ahead to the final months of 2025, we're thrilled to announce that we have added few more sessions to our ongoing community series. We want to hear from You! Your ideas and feedback helps us create the experiences our community truly wants. Drop a comment below and let us know what events or…
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Community Champion of the Month - October, 2025
The Community Team would like to introduce the October Champion of the Month, Roger DeAngelis @Roger DeAngelis_21630. Roger’s path began in the early 1960s, when he bought his first ebony-and-ivory K & E slide rule. In high school, he was drawn to math, physics, and Newton’s laws of motion. He attended the University of…
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Altair RISE : Program to Recognize and Reward our most engaged Community Members
🚀 Altair RISE Program We're excited to launch an exclusive 6-month program designed to recognize and reward our most engaged community members! Whether you're answering questions, sharing solutions, or participating in discussions, RISE gives you recognition in the community while helping you grow your expertise. Progress…
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Altair Community Rewards and Recognization
The Altair Community is a space where beginners, experienced users, industry experts, students, faculty and our product specialists come together to share insights, collaborate, and find ways to take full advantage of our products. Engagement is at the heart of the Community and with the launch of our new and improved…
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Vehicle structure and fatalities from national highway traffic safety administration database
Vehicle structure and fatalities from national highway traffic safety administration database Too long to post here,see github https://github.com/rogerjdeangelis/utl-altair-slc-vehicle-structure-and-fatalities-national-highway-traffic-safety-admin-database Problem Indentify Vehicle Structual and Crash Related Information…
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Optistruct spring/bar contraction control
https://community.altair.com/discussion/comment/199443?tab=all#Comment_199443
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Regarding the application of continuous forced displacement in Optistruct
I have a board now, and I need to move it up 50mm in the first working condition. In the second working condition, I need to move it up 20mm on the basis of working condition one. In the first load step, I used SPCD to move it up 50mm, and in the second load step, I used forced displacement to move 20mm and continuous load…
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Is it possible to perform 2D CFD analysis in Simlab ??
Hi everyone, I am working on a motor and have completed the 2D electromagnetic design in SimLab. Now, I need to perform a thermal analysis to identify internal hotspots and verify the effectiveness of my water cooling. My strategy is to start with a 2D workflow for fast iterations before moving to a full 3D model. I have…
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Usage of CGAP to model bolted joint clearance
Dear , I am trying to model CGAP to model the clearance in bolted joints. This element is used to connect CQUAD4 with CBUSH on both extremities of the joints. I am checking this modeling techinique with a simple model before implementing it in a detailed model. In this model, the load is not transferred through the bolts…
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display contact elements
How to display contact elements created during analisys? As the example given in the opistruct help Thanks
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[URGENT] RADIOSS SDK Error: /MAT/USER01 Routine Not Found in DLL (Shell Law)
Issue Description: > I am encountering a termination error in the RADIOSS Starter when attempting to use a custom material law (/MAT/USER01). Despite having the compiled DLL in the working directory and specifying it in the solver console, the solver fails to find the user interface routine. Error Log: > ** ERROR IN USER…
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I cant activate my license on my new computer
I switched computers but didn't deactivate the license on the old PC, and now I no longer have access to it. What should I do?
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회원가입 시 회사명 오기재
안녕하세요, 알테어원 계정에 최근 회사 계정으로 가입했으나 회사명을 오기재하여 회사 라이센스를 사용하지 못하는 상황입니다. 계정을 아예 삭제하고 재가입하려 하였으나 회원탈퇴 항목이 보이지 않고, 회사명도 변경하지 못하게 잠겨있어 도움을 구하고 싶습니다. 감사합니다.
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PSIM 라이센스 관련하여 문의드립니다.
PSIM을 사용하던 중 라이센스 만료일이 다 되어 라이센스를 갱신하기 위해 기존 라이센스를 비활성화 하지 않고 새로 라이센스를 받아 PSIM에 입력하였습니다. 하지만 새로운 라이센스는 입력되지 않았고 기존라이센스가 계속 유효한 상황입니다. 그래서 비활성화를 위해 기존 라이센스 파일 및 코드를 확인해보려 하였으나 기존 라이센스 파일은 사라져있고 기존 라이센스 번호도 모르는 상황입니다. 이 경우 어떻게 조치해야하나요? 현재 확인되는 라이센스 파일은 새로 발급받은 라이센스 파일입니다.
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E-Drive: issue on Main motor control block execute on interrupt
Dear Team, In the e-drive motor control project (open-loop and closed-loop), we initially worked with Launchpad F280049C mcu using the GANINV board, and the system was working fine….In this setup, the *main motor control is executed on interrupt, configured with *ADCBINT1 and EOC2 mode. Later, we converted the same project…
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[EDEM API] Varialbe_Cohesion
Hello, I have been working through the EDEM API tutorial and successfully ran 3_Variable_Cohesion. I would like to apply this tutorial to a simulation with three different particle types. Could you please advise which files need to be modified and how they should be changed in order to support three particle types instead…
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Radioss で摩擦を熱に変える例題
はじめに Radioss の接触 /INTER/TYPE7 と /INTER/TYPE25 には、摩擦エネルギを、熱エネルギに変換して、熱伝導解析の熱源とすることができます。 本記事では、簡単な例題を一つ示しながら、入力内容について説明していきます。 例題と説明 ダウンロード: https://us.v-cdn.net/6038102/uploads/DIPNKQ6WKRGI/model01.7z 摩擦で熱が発生している様子。 本例題は、こちらの公式例題を元に作りました。…
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Inquiry regarding Inlet Boundary Conditions for Thermal-Fluid Analysis in SimLab (Flow)
Hello, I am currently using the SimLab v2026 Student Edition. I have a question regarding the thermal-fluid analysis of a battery segment using the Solution - Flow tool. (I apologize for any unnatural expressions; I'm relying on a translator for this message.) The model geometry is as follows: The area highlighted in green…
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Regarding the contact settings for interference fits in Optistruct
I currently have two parts with an interference fit of 0.55mm. When modeling the actual model, it was through penetration, and the mesh division was also through penetration. I set Clearance=-0.55 in the optistruct contact, but the mesh nodes remained through. Is this correct? Or do we need to manually move the grid nodes…
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[EDEM] Restart from a previously run state
Hello, I would like to restart my simulation from a previously run state and treat it as a new initial condition. Specifically, I run the simulation for 10 seconds, then I want to take that state and restart the simulation again from 0 seconds, applying different conditions or changes from that point onward. Could you…
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Altair slc creating slc datasets from SimLab inp file
Altair slc creating slc datasets from SimLab inp file Too long to post here, see github github https://github.com/rogerjdeangelis/utl-altair-slc-creating-slc-datasets-from-SimLab-inp-file Altair slc creating slc dataset from a SimLab inp file CONTENTS 1 De-normalised form 2 Normal form 3 utl_untranspose macro (also in…
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[EDEM] EEPA model's initial values
Hello, I am currently running a mixer simulation. I am simulating a mixer that blends three different types of particles, and I am wondering how the initial values for the EEPA model should be set. For the particles themselves, I determined the parameters using the angle of repose via the Open Powder Wizard, and I left the…
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Neuber Correction Utility for Stress/Strain Results Files
Overview: This is a GUI-based Compose Distributable that performs Neuber correction on HyperView results files. Features: Load .h3d results files and select one or multiple subcases for processing Choose stress and strain datatypes and components from the loaded file (the maximum value among selected components is used for…
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Altair slc wrapping proc r in a macro and passing arguments with enhanced sql;
Altair slc wrapping proc r in a macro and passing arguments with enhanced sql; Too long to post here, see github https://github.com/rogerjdeangelis/utl-altair-slc-wrapping-proc-r-in-a-macro-and-passing-arguments-with-enhanced-sql EXAMPLES (PROVIDES A VERY POWERFUL ENHANCED SQL) 1 Save utl_submit_r64 macro in your autocall…
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Reading Spherical Mode Data from .sph file
Hello, Is there documentation for how the spherical mode data is organized in the .sph file? I am looking to import this data into MATLAB or Python, but there is no explanation for which data entries correspond to TE/TM modes, and to which order n,m in the expansion
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Feeding a metasurface patch antenna on CADFEKO on a infinite ground plane, can I do this with CPW?
I am looking to design a metasurface patch antenna on CADFEKO. I am modeling first on a infinite ground plane. The patch antenna is fed with a coplanar waveguide, is it possible to do coplanar waveguide on infinite ground plane? If so, how can I go about doing this? Any other ideas if this is not possible? See files below…
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Metal-To-Mold Heat Transfer; How to use temperature-dependent values
Hello, I have used extensively used both MAGMA and ProCast previously. Assigning temperature-dependent heat-transfer coefficients (HTC) between the mold and the metal was always of utmost important for accurate simulations. When I look in the material file for mold material in Inspire Cast, I see that I can assign a…
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Roof-Level Retrofit Beam, Anchoring to Lower Floors, and Column Removal Modelling in S-FRAME
I am a BEng (Hons) Civil Engineering student conducting research on the structural robustness of existing buildings through roof-level retrofitting. Using S-FRAME, my work focuses on modelling a roof-level retrofit beam, its anchorage to the 1st and 2nd floors, and the simulation of a ground-floor column removal scenario.…
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NL transient thermal analysis - heat transfert loads - hypermesh + optistruct - 3D model
Hello dears, heat transfert input data of a 3d model is made of: an element face number a value of Q0 related to the surface of this face I have to apply a heating power on a total surface of let's say 0.1 square meter. this surface is curved, and the meshing is not regular (because of misc. considerations) My questions…
