Better yet, explicitly request the feature in the tab inside Workbench: deselect the capped licenses (e.g., "Mechanical Pro") and keep only "Mechanical Enterprise."
This error typically triggers when your mesh (nodes and elements) exceeds the hard caps defined by your specific license type. Below is a breakdown of why this happens and how to fix it without losing simulation quality. Understanding the Limits
When node numbering gaps cause errors, full model renumbering can help: Better yet, explicitly request the feature in the
Highly restricted geometry and port counts. 2. Ansys Academic Research & Teaching
Ansys software is designed to solve complex engineering problems using numerical methods, such as finite element analysis (FEA) and computational fluid dynamics (CFD). These simulations require significant computational resources and can be limited by the capabilities of your hardware and software. The license limitations are in place to prevent excessive usage and ensure that the software is used within reasonable limits. The license limitations are in place to prevent
If you are at a university or company, ensure the software is pulling the correct license tier.
Remote points are particularly problematic because Ansys Mechanical assigns a large, arbitrary number to the pilot node. When models include remote points, node IDs can have significant gaps, pushing the highest node ID beyond the limit even with few actual nodes. 000 - 256
| License Type | Solver Discipline | Limit (Nodes/Elements) | Additional Context | | :--- | :--- | :--- | :--- | | | Structural | 32,000 nodes or elements | Sum of elements + nodes must be < 32k. This is the most common source of the error for students. | | Student Version | Fluids (CFD) | 512,000 nodes or elements | Allows for more complex mesh density in fluid simulations. | | Student Version | Geometry | 50 bodies / 300 faces | Cap on assembly and part complexity before meshing. | | Academic Teaching License | Structural | 32,000 - 256,000 | Varies by version. Some versions for mechanical allow up to 256k, but many are still capped at 32k. | | Academic Teaching License | Fluids (CFD) | 512,000 | This is the standard limit for most "Academic Teaching" CFD products. | | Academic Teaching Advanced | Structural/Thermal | Up to 256,000 | A higher-tier academic license providing significantly more flexibility. | | Commercial License | All | Unlimited | No problem size restrictions. Designed for professional, large-scale simulations. | | Research License | All | Unlimited | Typically used by universities for advanced projects that exceed teaching limits. |