Greetings, Previously, I performed a simulation in CST Studio Suite of a gridded electron gun to be able to extract electron bunches instead of continuous emission. Consider the following animation, I would like to fix the frame at a specific time, for example this frame, In this frame, I would like to make a location constraint. For example, I want to tell CST to consider a box around the extracted bunch (I will define the [x_min, x_max ,y_min, y_max, z_min, z_max] manually). Then I tell CST

📅 June 30, 2026 ⌚ 9:30 CEST & 11:00 PDT ▶️ Register now 📢 Explore our full A&D Webinar series - June 2026 Engineering analysis and simulation are increasingly central to product development, helping reduce risk and support better decision-making. As organizations invest more to stay competitive and accelerate time-to-market, traditional bottlenecks like solver performance and HPC access are no longer the primary constraints. Instead, productivity is limited by how effectively

📅 June 23, 2026 ⌚ 9:30 CEST & 11:00 PDT ▶️ Register now 📢 Explore our full A&D Webinar series - June 2026 As defense programs become more integrated across platforms, systems and engineering processes, electromagnetic performance plays an increasingly important role in critical technical and program decisions. Radar, communications, electronic warfare, stealth, EMC and electromagnetic resilience influence not only system performance, but also integration risk, validation efforts,

📅 June 2, 2026 ⌚ 9:30 CEST & 11:00 PDT ▶️ Register now 📢 Explore our full A&D Webinar series - June 2026 CFD technologies based on LBM solve complex flow problems in the defense sector. While many believe LBM tools like SIMULIA's PowerFLOW only handle low-speed flows, we have expanded this technology over the past decade to manage transonic and supersonic flows up to Mach 2. PowerFLOW simulates highly unsteady flows much faster than the competing Navier-Stokes tools. It resolves

Quote from Jorgen Bergström : User-subroutines were recently published on the SIMULIA Knowledge-Base to allow the Abaqus PRF model to replicate Bergström's Three Network Model. Let us call this the "PRF_TNM" model. Abaqus solver 2025 HF1 or later can be used. This post describes how the 3DExperience Material Calibration App can be used to calibrate the PRF_TNM model. I will be showing this with the development version of the app, and this capability will be released as of R2026x FD01.

Attention Engineering Educators, this webinar is for you! Are your students only learning design or do they also use virtual testing to validate and optimize? In industry today, engineering doesn’t stop at CAD. It’s driven by simulation: where design, analysis, and multiphysics come together to make faster, smarter decisions from the very start. The good news: bringing this into your teaching is more accessible than it may seem. Join our LIVE webinar to see how Unified Modeling and Simulation

Will you be joining us? We are excited to announce the SIMULIA Innovation Day: Structures is taking place on June 9 at Lowry, Salford. This event is specifically designed for those interested in structural simulation technology and eager to stay up to date on the latest advancements. Do not miss the opportunity to attend this free event, where you can actively engage with SIMULIA experts and connect with fellow users from your local community. 📍 Lowry, Salford 📅 June 9, 2026

Hello everyone, I am currently working on an infiltration analysis in Abaqus/Standard and have been facing persistent convergence and stability issues during the simulation. I would greatly appreciate any guidance or suggestions from the community. The model involves coupled infiltration behavior, and during the analysis I encounter issues such as: Too many attempts made for this increment I would like to understand: What are the common causes of these issues in infiltration or seepage-related

Greetings, I designed a gridded electron gun in CST Studio Suite. I would like to prove a phenomenon called, 'short-tail and long-tail bunch extraction' in the space between cathode and grid area. I will explain what I need, According to the Fig.1, I attached multiple 2D monitors in the space between cathode and grid, Fig. 1: 20 layers of particle 2D monitors are assigned in between cathode and grid. Cathode is on the left side; grid is on right side. In a fixed time frame, let us say t = 0.290

I am using Abaqus/Explicit with two different formulations in the same model: The matrix is modelled using the HJC material model. The fibre/interface bond-link behaviour is modelled using a VUEL user element. My objective is to visualize the damage variables stored in the VUEL state variables, mainly SVARS(9), SVARS(10), and SVARS(11). However, in the Visualization module, I can only see the HJC/matrix material state variables, such as the HJC damage variable appearing as SDV. The VUEL-related

Dear all ! I wanna put the multi-layer gasket elements in my CAE model. The brief model is shown as below. The model is one combination that including two blocks, gasket elements, thin plates. There are two different gasket elements, the gaskets with initial gap and without initial gap. All gasket elements have been set as thickness-direction behavior only. For the interactions between gaskets and thin plate, I refered to the setting described in the help doucment. The contact-tied

Register today! Join us on June 2 for our webinar, "SIMULIA BioEM Simulations for Medical Applications," to see how simulation can revolutionize your workflow by mastering the complexities of human-EM field interactions. As the medical technology industry evolves, the pressure to innovate while meeting stringent FDA and MDR regulatory standards continues to grow. Navigating the interaction between electromagnetic (EM) fields and the human body is critical for the safety and efficacy of

Download the conference e-book and Register today! While our Day 1 Advanced Structures session is now at capacity, space is still available for the Day 2 Plenary and Breakout sessions. It’s a fantastic opportunity to step away from the office, refresh your perspective, and connect with the simulation community. Day 2 features an incredible lineup of guest speakers sharing real-world insights and case studies, including: Oliver Bracher, AtkinsRéalis Ioan Danese & Manuel Mendoza Vázquez,

About a decade ago several advanced creep models were added to Abaqus for modeling the creep of lead-free solder. At first they were added as "built-in" creep user-subroutines, then later as native and fully documented models. These are the Double-Power, the Anand, and the Darveaux creep models. There was a nice Knowledge Base article written to disseminate this information: And a nice Tech Brief: In 2011, several of my SIMULIA colleagues wrote a NAFEMS paper about the calibration of

As of R2026x FD02, there is still a bug related to this user-subroutine. The user-subroutine allows the user to set a "number of local directions", but this is not yet supported in the calibration app. The screen shot below is from a development version (as of 5-5-2026).

The 3DExperience Material Calibration App, R2026x, currently supports the following material user-subroutines: Abaqus User Subroutine Description CREEPUser-defined creep behavior. UANISOHYPER_STRAINUser-defined anisotropic hyperelasticity bases on stretches. UANISOHYPER_INV User-defined anisotropic hyperelasticity based on strain invariants. UHYPERUser-defined isotropic hyperelasticity based on strain invariants. UHYPER_STRETCH User-defined isotropic hyperelasticity based on stretches.

I am reproducing the paper “A phase field formulation for dissolution-driven stress corrosion cracking”, which involves stress corrosion cracking. The authors also provided the finite element input file (.inp) and the user subroutine files used in the paper, including UEL + UMAT. The original authors used Abaqus 6.14. When I use Abaqus 2024 or 2025, I find that the post-processing results cannot be displayed. Abaqus reports that the current variable cannot be displayed for this element type or

This post serves as a list of all the new features in the 3DExperience Material Calibration App for R2026x FD01. My intention is to create separate posts for each new feature to explain and demonstrate. This will serve as a set of examples that users can refer to and follow. R2026x FD01 was pushed to the public cloud on Saturday, Feb 7, 2026. Each of the hyperlinks below (in blue) demonstrate a particular new feature. Add new Paperboard material model 26x FD01 Calibration :

The calibration of a UANISOHYPER_STRAIN usersub is now available in R2026x FD02. The public cloud was upgraded to FD02 on the last Saturday in April. I tested this workflow today (May 5, 2026) using the public cloud R2026x HotFix 3.15. The image above is to draw your attention to an Abaqus Verification manual section. In that section there is a user-subroutine file named uanisohyper_inv.f That file also contains a uanisohyper_strain subroutine that mimics the Abaqus native Fung

New to the community? Check out the Welcome page 🆕 What's new ▶ Save the date for this year's Regional User meetings: 📍Gothenburg, Sweden📅May 27-28, 2026EuroNORTH RUM website 📍Padua, Italy📅June 9–10, 2026 EuroMed RUM website 📍Vélizy-Villacoublay, France📅June 11th, 2026 EUROWEST RUM website📍Darmstadt, Germany📅June 16-18 EuroCentral RUM website ▶ CST Studio Suite Tips and Tricks from Theunis Beukman! ▶The Living Heart Model Page is LIVE! 🔎 Discover...▶ The latest SIMULIA

Spring has sprung!🌷Along with the warmer weather, flowers and longer days, the SIMULIA blog has been building momentum with 5 articles published in April. Check out all the great content published, including technical posts about vehicle dynamics and output filtering, the BMW customer story and more! Here's what was published in April: Submarine Fluid Simulation: Hydrodynamics, Propeller Dynamics and Wake TrackingIn this article, we show how simulation can enhance submarine hydrodynamic

In celebration of Star Wars Day, I developed a series of simulations exploring one of the saga’s most iconic elements: the helmet. The idea was to go beyond aesthetics and bring engineering into play: 🔹 Structural analysis with lateral loading (linear and nonlinear static) 🔹 Frequency behavior evaluation 🔹 Helmet aerodynamics simulation More than just a tribute, this exercise highlights how engineering tools allow us to understand, predict, and optimize product performance — even when inspired

Hi everyone, I’m currently facing an issue with the 3DSwym app where the content is not loading at all (blank screen), as shown in the screenshot. This has been happening since yesterday. I’ve tried refreshing and logging in again, but the issue still persists. Is anyone else experiencing the same problem? If yes, please comment or let me know if you found any solution. Thanks You

make me crazy, using ''structural scenario creation" How can I simulate a mass on one side of the ''double spring'' assembly with a clamp on the other side. Of course results must show top faces (both spring) at the same level. I added an interaction between this two top surfaces but not a good result. I found a solution with adding a ''cover''. I'm not happy with this

Hi, I am facing an issue with accessing the Material Library. Issue Description: I was able to access and assign materials from the Material Library successfully. However, within the same session (approximately 10-15 minutes later), the Material Library became inaccessible. Currently, when attempting to apply material, the library is not loading / appears empty / not accessible (please adjust based on your exact observation). Steps Already Tried: Cleared local search cache and refreshed

The 2026 SIMULIA Americas Users Conference is a great opportunity to connect with simulation community, hear the latest from customers, experts and R&D, and explore innovation across structures, fluids, electromagnetics, vibroacoustics, multibody dynamics and multiphysics workflows with strong emphasis on MODSIM (Modeling & Simulation) approaches to accelerate collaboration and drive innovation across disciplines on the 3DEXPERIENCE Platform. For CFD enthusiasts, we're especially excited about

Download the conference e-book today! We’re delighted to welcome Manuel Mendoza Vázquez & Ioan Danese (Essity AB) and Alit Putra (Mölnlycke Health Care) to our growing lineup for the SIMULIA EURONORTH Regional User Meeting! Step away from the office and join us in Göteborg (May 27-28) to connect with simulation peers and SIMULIA technical experts. Download our e-book today to see the full agenda! 📍 Göteborg, Sweden 📅 May 27-28, 2026 WHY ATTEND? Engage

Hello SIMULIA Community, at the end of my simulation I generated an automatic report to easily share my methodology with other colleagues (we are using 3DEXPERIENCE R2026x FD01 on-cloud). Unfortunately, I realized that the document is not a simple word file but an engineering document linked/embedded to the simulation object, and it is not possible to easily display it just by using either 3DPlay or Document Manager widgets. It seems that Simulation Finder native app has to be used to display

In my current work, I am trying to integrate the “Cyclic Jump Technique” as introduced back then in 2006 from Cojocaru by modifying my UEL Subroutine. The methodology is as following. An initial simulation for 6 cycles is executed. Then I extract from the ".odb" at last frame [end] the Displacements and Internal Variables. Thereafter the second simulation is initiated, where it contains two Loading Steps. In the first step the Extracted Displacement is applied as displacement control load

Hi, I’d like to model chip formation during a cutting operation using a CEL formulation (material flow in Eulerian—EUL—coupled with a rigid tool in Lagrangian—LAG). However, I’m encountering an issue I don’t fully understand regarding the velocity field in my workpiece. The workpiece’s speed is prescribed at the top boundary of the Eulerian mesh. I’m using a Johnson-Cook material model (accounting for both plasticity and damage) for the workpiece, but I’m observing oscillations in the results

Overview The SIMULIA Living Heart Human Model is a groundbreaking, high-fidelity multiphysics simulation of a healthy, four-chamber adult heart, including detailed anatomy such as the Left Ventricle, Left Atrium, Mitral Valve, and Chordae. It realistically replicates the heart's electromechanical behavior, enabling the virtual testing of cardiovascular and rhythm management devices (e.g., artificial valves, stents, defibrillators). This innovative tool accelerates the development of safer, more

If you’re working in life sciences, medtech, or simulation-driven design, this is worth a look. The Living Heart Model brings together realistic anatomy, physics-based simulation, and ongoing research to create a dynamic, validated human heart model. Use it to: Explore cardiac mechanics with high fidelity Support device design and testing Run simulations that reduce reliance on physical prototypes Bridge collaboration between engineering and healthcare You can explore the latest

Greetings, I designed a simple pierce-like electron gun in CST Studio Suite and I used the tracking solver to see electron emission trajectory. Usually I use Tetrahedral meshing for the simulation but one time I decided to change the meshing option to Hexahedral FIT. Surprisingly, the particle trajectory is completely different! I would like to know why this happens? This is the regular Tetrahedral mesh, Below is the result of Hexahedral FIT. Another problem is that, when I use Tetrahedral

What Will Industrial AI Do for You? Find Out in Just 90 Minutes! The 2026 3DEXPERIENCE® Modeling & Simulation Summit is coming up fast! Join our online summit, and in just 90 minutes we’ll show you how the latest AI-enhanced MODSIM technology is reshaping the product design process – register today! Everyone is talking about the role that AI will play in the future of engineering…what will it do for you? Steal your job? Or accelerate your analyses, allow for more design iterations, and enable

CST Studio Suite

I am currently using MATLAB 2018a to control CST Studio Suite 2021 for automated RCS simulations. In my workflow, the target model is imported in STL format. However, during the import process, CST generates a warning dialog indicating issues with the geometry. This dialog requires manual confirmation and blocks the execution of the automation script, causing the simulation process to halt. I would like to ask whether CST provides any method or configuration to suppress or ignore such warning

Recently, we upgraded the workstation to the CST Studio Suite 2025 version and updated the latest NVIDIA driver and CUDA version. However, we often encounter errors when opening the models. However, by closing this CST window and then opening a new CST window, and subsequently opening the same model again, the model file can be opened normally. Do you have any solutions for this?

Presentation Presenter Poster Welcome and Opening Remarks Hamish Nicol Structural Integrity Assessment of Industrial Equipment Under Complex Damage Mechanisms with Abaqus and 3DEXPERIENCE Platform Jingtian Wu Customer Presentation: Introduction to Fitness-For-Service with FEA Applications Anthony Feller Simulation of Erosive Effects on Part Durability and Fitness for Service Ani Rajagopal From PCB to Pipeline: Electronics System Design Powering Multiphysics Applications Yuan Di and

About the role The All Physics Analyst role allows you to: Connect established products to 3DEXPERIENCE platform Provide connection to multiple disciplines - structures, fluids, electromagnetics, vibro-acoustics and multibody dynamics Experience a holistic lifecycle of design, simulation and KPIs Fully integrate with design process and data Give your decision makers results they can really experience through lightweight visualization Note: you can use the contents page icon in the top right of

About the role The Structural Performance Engineer role allows you to: Provide product engineers powerful and intuitive tools needed to perform sophisticated structural simulations during the design process Experience efficient "what if" scenarios through seamless associativity/integration with geometry Use a unique engineering workflow with an access to robust simulation technology within an intuitive interface Work with multistep structural scenarios for product performance and quality testing

This role allows you to: Intuitively the performance of products under linear static conditions and guide the overall design process Quickly evaluate the strength and stiffness of components for informed what-if design scenarios Use a unique guided workflow process that enables any designer to rapidly determine product performance Easily and efficiently test product designs with automated modeling and ability to control accuracy vs compute time Include local compute up to 4 cores Note: you can

About the role The structural Analysis Engineer is a comprehensive role to perform structural integrity assessment of any type of product, providing: Multiple structural analyses, including static or quasi static, frequency, buckling, mode-based steady-state or transient dynamic, random response, and non-linear dynamic Thermal analyses or sequential thermal-stress analyses (both transient or steady state) Advanced capability from meshing, with possible automated creation, scenario definition (up

About the role The Multidisciplinary Optimization Engineer role allows you to: Investigate the relationships between design parameters and their influence on performance objectives, to improve the efficiency of design exploration Systematically explore variations of design parameters through optimization, to identify the best design that satisfies requirements Assess the influence of variability to reduce the probability of design failures Gain comprehensive insight into the entire design space

Note: you can use the menu icon in the top right of the post to jump to the section that you're interested in. R2026x FD02 User Experience ValueEasily simulate electronics cooling applications with an enhanced user experience for setting up joule heating Create rich rendering visualizations with new rendering settings per plot in Physics Results Explorer Users can now easily set the thermal resistance properties of simulation components in the geometry-based workflow. Joule heating phenomena

About the role The SIMULIA Electromagnetics Engineer role: Provides access to SIMULIA CST Studio Suite, the leading solution for low to high-frequency (static to optical) electromagnetic simulations Supports engineers for antenna and microwave devices design to improve product performance and reduce time-to-market Helps engineers to identify and mitigate electromagnetic compatibility (EMC) and electromagnetic interference (EMI) risks in electronic devices, minimizing warranty claims and recalls

About the role The Durability and Mechanics Engineer role allows you to perform: Multistep structural scenarios, powered by market leader Abaqus technology, for comprehensive product performance assessment including: Static, Frequency, Thermal, Buckling, Implicit/Explicit Dynamics, Linear Dynamics Fatigue simulation to predict accurate fatigue lives and ensure complex engineering products are designed for durability: avoid late re-design, minimize physical tests, reduce warranty costs, extend

Note: some of this information about SIMULIA roles is hosted in the 3DEXPERIENCE platform user's community ▶Looking for the 3 letter code (trigram) for the role? Check out Role Codes and Role Titles R2026x FD02 | Enhanced rolesComing soon! R2026x FD02 | New roleSimulation Foundation Essential Collaborator R2026x FD01 | Enhanced roles3D Motion Creator All Physics Analyst Composite Structures Analysis Engineer Composite Structures Performance Engineer Concept Structure Analyst

I am currently running a quasi-static compression simulation of a TPMS (Triply Periodic Minimal Surface) lattice structure using Abaqus/Explicit, and I am encountering a severe mesh penetration issue immediately after element deletion is triggered. Setup: Mesh: C3D10M, 0.2 mm, distortion control ON,element deletion ON. Material: J-C plasticity + J-C damage initiation + displacement-based evolution (0.02 mm). Contact: General contact, hard normal, friction 0.15. Issue: ①: Top layer elements

Hi All, I modeled torsion of a hollow cylinder according to the attached image from a paper. but my results show the top surface stays rigid like a rotated circle! while the image shows it deforms. Does anyone have similar experience? I would appreciate your comments!

Confirmed Customer Speakers! This year’s agenda brings together the best in simulation—from visionary leadership to deep-dive technical engineering—alongside our most innovative customers. Our 2026 Featured Speakers: Brand Strategy: Michelle Ash, SIMULIA CEO, providing an exclusive brand update and strategic roadmap for the SIMULIA portfolioR&D Deep Dive: Sandeep Kulathu, Senior Manager, R&D Structures, spearheading a Day 1 technical deep dive into structural solver technologyUser

Registration now open! We are excited to announce the SIMULIA Innovation Day: Structures is taking place on June 9 at Lowry, Salford. This event is specifically designed for those interested in structural simulation technology and eager to stay up to date on the latest advancements. Do not miss the opportunity to attend this free event, where you can actively engage with SIMULIA experts and connect with fellow users from your local community. 📍 Lowry, Salford 📅 June 9, 2026

Meet your peers and us at the 2026 SIMULIA EuroMed Conference — moved up by one day and now scheduled for Monday–Tuesday, June 8–9, 2026 — the event that brings together engineers, researchers and academics from diverse industries to share ideas and experiences across all areas of simulation technology! Listen to customers, industry leaders and SIMULIA Technical Experts and participate in introductory training and technology workshops. 📍 Padua, Italy 📅 !!! New Date: June 8–9, 2026 !!! 🏛

This is an Abaqus/Standard result in the learning edition motived by a YouTube video on the Steve Mould channel.

2026 Schedule Our Regional User Meetings serve as a central meeting point for engineers, researchers and academics from all industries to exchange ideas and experiences in all aspects of simulation technology. Americas Users Conference Novi, Michigan, USA May 13-14 EURONORTH RUM Gothenburg, Sweden May 27-28 EuroMed ConferencePadua, Italy June 8-9 EUROWEST RUM Velizy, France June 11 Korea, RUM Seoul, Korea June 11 EuroCentral RUM Darmstadt, Germany June 16-18 Japan RUM Tokyo, Japan September 11

Join us in Padua, Italy, to discover our virtual simulation capabilities! The conference brings together engineers, researchers, and academics across industries to exchange ideas and experiences on all aspects of simulation technology. Hear from customers, industry leaders, and SIMULIA Technical Experts and attend introductory training and technology deep-dives. 📍Padua, Italy 📅 June 9–10, 2026 => !!! New Date: June 8–9, 2026 !!! 🗓️ Save the Date to your Calendar 🌐 Event Website Make an

I have been tasked with running a compression test on a femur bone, by applying boundary conditions to reference points and then getting the force displacement from them. however the model seem to rotate when I use tie functions to connect them with the element sets I have created, but works fine when applying the boundary conditions directly to the sets. below is my set up for the ties. I am a bit new to abacus so any advice on how to fix this would be appreciated: element Set 1 has been

Hi everyone, I am a graduate student working on ISAR image simulation using CST Studio Suite . I have been trying to replicate the high-quality imaging results shown in the paper "Synthetic SAR Image Generation using Sensor, Terrain and Target Models". I have implemented both the Backprojection (BP) algorithm and the small-angle 2DIFT algorithm (with windowing and zero-padding). However, my reconstructed images suffer from poor focusing and significant speckle noise in the background (vacuum

Hello, We have an issue creating or opening new project in Simulia CST Studio Suite . When we open the project or make a new one, CST freeze at opening 3D view. It just stops loading that window, look at the picture: We tried updating graphic card drivers, reinstalled Simulia but nothing helped. Simulations or schematic view works normal. What can it be, how to solve this?

Dear Support, I have encountered problem during optimization process in CST Studio Suite . Recently I converted my project files from CST 2024 to CST 2026 because of workstation migration and now I don't have access to older update version. Now often when I want to start calculation, error window appears that says: It is happening mostly after few initial iterations of optimization. I don't know if this case is related to older version files or simply caused by modeling mistake. I hope that

Greetings: I am currently using the Explicit module of Abaqus to simulate the penetration of a bullet into a metal component. After reducing the stress wave through viscous pressure, I use the "initial state" to transfer the data to the "standard" module. Currently, I have encountered a problem: In the Explicit simulation, there are some elements that have not failed but have detached from the main body of the component. These elements will seriously affect the convergence of the