Siemens Industry Software Gmbh

Siemens Industry Software Nv

Jonathan Makem

Nilanjan Mukherjee

Debashis Basu

Harold Fogg

Jean Cabello

Abinesh Thota

Wafa Daldoul

A computer-implemented method of modifying a finite element mesh. The method includes providing an original-input-orphan-mesh, selecting and extracting at least a part of the original-input-orphan-mesh as an orphan-element-patch-object, generating faces on the orphan-element-patch-object as a faces-on-mesh-object geometry, generating a new mesh patch element based on the faces-on-mesh-object-geometry and at least one changed meshing-parameter. The changed meshing-parameter is assigned to generate a new mesh patch element that is different to the corresponding original-input-orphan-mesh. The method further includes generating an amended orphan mesh by replacing the orphan-element-patch-object of the original-input-orphan-mesh by the new mesh patch element.

Modifying a finite element mesh

Methods for CAD operations and corresponding systems () and computer-readable mediums () are disclosed herein. A method includes receiving () a model () of a part to be manufactured, wherein the model includes a plurality of original faces (). The method includes classifying () each face in model according to a relative face curvature according to classifications that include at least a high-curvature classification (). The method includes classifying () any sliver faces () and narrow blend faces () of the plurality of faces. The method includes merging () contiguous faces () in each classification. The method includes detecting () special faces () of the plurality of faces. The method includes restoring () original faces in the high-curvature classification except for the special faces (). The method includes processing () shared edges of the restored original faces to produce merged faces (). The method includes merging together () any merged faces that produce a locally narrow face () or an isthmus (). The method includes storing () a modified model of the part to be manufactured.

Feature based abstraction and meshing

A system and method is provided for element quality improvement in three-dimensional (3D) quadrilateral-dominant surface meshes. The system may include a processor configured to collapse a first plurality of edges of a plurality of quadrilateral elements that form a surface mesh of a 3D model, which edges have lengths that are shorter than a predetermined fraction of a minimum element edge length (MEL). Further, the processor may also move nodes connected to at least some of a second plurality of edges of the plurality of quadrilateral elements so as to have lengths that are at least the MEL. Also, the processor may adjust included angles and the warp of elements to be within predetermined limits. Further, the processor may collapse in the mesh all remaining edges of the plurality of quadrilateral elements that are shorter than the MEL to produce a modified surface mesh in which all quadrilaterals in the modified mesh have edge lengths that are at least the MEL.

System and method for element quality improvement in 3D quadrilateral-dominant surface meshes

A system and method is provided that facilitates generating meshes for object models of structures for use with finite element analysis simulations carried out on the structure. The system may include at least one processor configured to classify a type of an input face of a three dimensional (3D) object model of a structure based at least in part on a number of loops included by the input face. The processor may also select based on the classified type of the input face a multi-block decomposition algorithm from among a plurality of multi-block decomposition algorithms that the processor is configured to use. Further the processor may use the selected multi-block decomposition algorithm to determine locations of a plurality of blocks across the input face. In addition the processor may mesh each block to produce mesh data defining a mesh that divides the input face into a plurality of quadrilateral elements.

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Cambridge, United Kingdom

Jonathan Makem