Non-conformal domain decomposition with imprints at interfaces with boundaries for finite element analysis
AssigneeAnsys, Inc.
InventorsKezhong Zhao, Lars Eric Rickard Petersson, Xiaozhou Fu
Life of this patent
Estimating the term…
Abstract
A computer aided design can be decomposed into multiple domains or regions in a domain decomposition method, and then one or more finite element method boundary conditions at an interface between the domains can be imprinted on the faces of the domains at the interface, and then mesh generation can be performed independently on the domains. Thus, nonconformal domain decomposition can use the imprinting of the boundary conditions to improve the results of the independent mesh generation.
Claims24
A non-transitory machine readable medium storing executable instructions which when executed by a data processing system cause the data processing system to perform a method comprising:
- determining a plurality of regions in a representation of a structure in a physical system, the plurality of regions including a first region and a second region;
- determining that a first face of the first region is adjacent to a second face of the second region at an interface between the first face and the second face;
- determining that the first face includes a representation of an applied first finite element method (FEM) boundary condition that is not present in the second face;
- adding, in response to determining that the first FEM boundary condition is not present in the second face, the first FEM boundary condition to the second face at a position on the second face corresponding to a position of the representation of the first FEM boundary condition on the first face, the adding comprising:
- generating an imprint sheet of the first FEM boundary condition corresponding to an overlapping of one or more of areas of the interface where the first face touches the second face, and adding the imprint sheet to the second face;
- generating meshes for use in a finite element method used in a design process of the structure in the physical system, the generation of the meshes constrained on the second face by the first FEM boundary condition within the imprint sheet added to the second face, the generation of the meshes performed after the imprinting.
A machine implemented method comprising:
- determining a plurality of regions in a representation of a structure in a physical system, the plurality of regions including a first region and a second region;
- determining that a first face of the first region is adjacent to a second face of the second region at an interface between the first face and the second face;
- determining that the first face includes a representation of an applied first finite element method (FEM) boundary condition that is not present in the second face;
- adding, in response to determining that the first FEM boundary condition is not present in the second face, the first FEM boundary condition to the second face at a position on the second face corresponding to a position of the representation of the first FEM boundary condition on the first face, the adding comprising:
- generating an imprint sheet of the first FEM boundary condition corresponding to an overlapping of one or more areas of the interface where the first face touches the second face, and adding the imprint sheet to the second face;
- generating meshes for use in a finite element method used in a design process of the structure in the physical system, the generation of the meshes constrained on the second face by the first FEM boundary condition within the imprint sheet added to the second face, the generation of the meshes performed after the imprinting.
Dependencies are inferred from the claim text.