Autonomous Data Cleaning by Keeping Internal Structure and Homogenous Volumes between Objects

Vijay Mishra; Martin Schifko; Vijai Kumar Suriyababu; Alireza Eslamian

doi:10.4271/2019-01-0808

Autonomous cars already exist, why should anybody these days spend manual time on mesh preparation? This is a task for a machine, not for a human being. This paper shows a one-click way to prepare the mesh for multi-bodies or complex topological objects for CAX application and how to obtain autonomously suitable data cleaning and output qualities of complex multi object geometries. The underlying software is already in use for data cleaning, surface mesh generation and 3D mesh generation: here it prepares a body in white (BIW) starting from a CAD geometry to surface mesh, including data cleaning fully automatically with 5-8 hours computational time on a desktop machine, while requiring less than 15 minutes of manual work.

Firstly, during the import process the object gets subdivided and differentiates each part as sheet or solid. Each of these parts are moved to the global coordinate system. The user can review if the input data is the correct one. Once this is confirmed by the user; everything else runs fully automated.

In the next stage; during automated computation the subdivided parts such as sheets and solids are repaired autonomously by removing redundant geometries. Sheets are then inflated accordingly to the user thickness requirements and a homogenous belt is created between objects. Depending on the goal for the process one can obtain: 1) Closed connected surface mesh, 2) closed volumes of each objects and the belt and 3) All kinds of Boolean operation and its combinations between objects.

The belt-volumes generated from this can be used for numerical simulation i.e. thermal conductivity analysis. The main assets of the automatic meshing software are data cleaning, belt merger, and belt merge connection and volume extraction for CFD / structural analysis. In addition, one can bet 3D meshes on top by tetrahedral and hybrid volumes. This paper showcases the above described functionalities and how it is useful for the CAX industry for ease in solving the complex geometries automatically.

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Autonomous Data Cleaning by Keeping Internal Structure and Homogenous Volumes between Objects 2019-01-0808

SAE MOBILUS