MULTI-SCALE MESH MODELING SOFTWARE PRODUCTS AND CONTROLLERS

摘要

Simulation systems, manufacturing systems, software products and controllers are provided with multi-scale modeling in which a coarse mesh and a fme mesh that models a stimulus are decoupled. The fine mesh can be moved within the coarse mesh with a cut and paste operation. The coarse mesh is updated by sparsely propagated effects through the coarse mesh. Simulations of the invention can be conducted in real-time, and be used as controllers in manufacturing systems, such as additive manufacturing systems. A number of efficient methods are provided for solving meshing determinations that arise from movement of a stimulus modeled within a fine mesh.

主权项

1. A modeling and simulation software product in a control system for a manufacturing process, comprising code stored on a non-transient medium, the product comprising code for:
generating a coarse scale mesh to model at least a portion of an article being manufacturing; generating a fine scale mesh to model the article in an area of a stimulus that affects the article within the boundaries of the coarse scale mesh; conducting a dynamic feed forward multi-scale refinement and de-refinement operation within the coarse scale mesh in response to movement or changes of the stimulus, wherein the fine scale mesh includes the area of the simulus where energy is added to the material and corresponding thermo-mechanical stiffness matrices are implemented to avoid re-computation of nodal connectivity each time the fine mesh region moves or changes.