Sheffield, UK | February 26th, 2025 - MachineWorks Ltd. is pleased to announce the availability of a new reference example for CAE defeaturing.
Polygonica is a component software library for working with polygon meshes that helps companies in a range of industrial markets solve complex 2D and 3D geometrical problems.
The left image shows a 'dumb' polygon-mesh. It is just triangles, there is no information about CAD patches or BREP structure. On the right hand image the thin ribs have been selected and removed.
Preparing models, particularly models in mesh form, for CAE simulation, can be a very time-consuming process. You can see the scars of battle, and the pride, in those that have to do it regularly. Often it can be the most time-consuming and labour-intensive part of the CAE process.
There are several challenges, which include:
• Creating a topologically correct, watertight mesh free from strictly defined mesh errors such as self-intersections and non-manifold geometry
• Removing small mesh artefacts that can cause the CAE remesher and solver problems
• Removing small features that lead to the CAE remesher creating unnecessarily dense meshes, leading to longer runtimes, without improving the accuracy or reliability of the overall result
Removing and mitigating small features
Polygonica has range of tools that facilitate user-guided feature removal on ‘dumb’ polygon meshes i.e. where there is no known BREP structure or feature tree e.g. this is a cylinder, this is a cone, this is a NURBS surface etc.
A typical workflow involves:
• Augmented selection – use a range of tools to facilitate easier selection
• Deletion of selected faces/triangles from the mesh
• Advanced hole filling – use Polygonica’s advanced curvature sensitive hole filling to close the gaps created by the deletion of the selected faces
• Optional remeshing – use Polygonica’s remesher to improve the quality of triangles in the selected region, or across the entire mesh
For further information please see the Polygonica Mesh Defeaturing for CAE blog and the Polygonica YouTube channel.
The left image shows a 'dumb' polygon mesh with many internal holes, some of which are complex and contain screw threads. In the right hand image the holes have been removed using Polygonica.
About MachineWorks Ltd ( www.machineworks.com, www.polygonica.com)
MachineWorks Ltd has been providing advanced 3D software engines to manufacturers and engineering software developers since 1994. Polygonica is the leading engine for polygon-mesh modelling and is widely used in a range of markets, including CAD, CAM, CAE, and AM, along with Medical, Dental, EDA, Metrology, AEC, Construction, Mining, and other large capital asset industries. MachineWorks is the leading toolkit for CNC simulation and verification and is supplied embedded within a wide range of brands from major machine tools and CNC controller manufacturers and CAM software vendors.
With over fifty major OEM licensees, companies who integrate MachineWorks’ components into their software solutions include Dassault Systemes, Autodesk, Hexagon MI, ANSYS, Synopsys, 3D Systems, Oqton, Stratasys, OpenMind, CAMBRIO, Xometry, Desktop Metal, Nexa3D, B9Creations, Velo3D, ETEC, Heidenhain, Okuma, DMG Mori, HCL, SolidCAM, Convergent Science, SimScale, Topsolid, ZWSoft, Diota, Theorem Solutions, Starrag, Liechti, CASTOR, CADS Medical Software, Truabutment and Go2CAM.
