公开(公告)号：US11217013B2

公开(公告)日：2022-01-04

申请号：US15931779

申请日：2020-05-14

Applicant: Dassault Systemes SolidWorks Corporation

Inventor： Bowen Yu ,  Kyeong Hwi Lee ,  Shrikant Savant ,  Girish Mule

IPC: G06T17/20 ,  G06F30/10 ,  G06F30/23

Abstract: A method preserves shapes in a solid model when distributing material during topological optimization. A 3D geometric model of a part having a boundary shape is received. The geometric model is pre-processed to produce a variable-void mesh and to produce a frozen mesh representing the boundary shape. The geometric model is apportioned into a plurality of voxels, and a density value is adjusted for each voxel according to an optimization process. An iso-surface mesh is extracted from the voxel data, and a mesh Boolean intersection is derived between the extracted iso-surface mesh and the variable-void mesh. A mesh Boolean union between the mesh Boolean intersection and the frozen mesh.

公开(公告)号：US11189091B1

公开(公告)日：2021-11-30

申请号：US15931779

申请日：2020-05-14

Applicant: Dassault Systemes SolidWorks Corporation

Inventor： Bowen Yu ,  Kyeong Hwi Lee ,  Shrikant Savant ,  Girish Mule

IPC: G06T17/20 ,  G06F30/10 ,  G06F30/23

Abstract: A method preserves shapes in a solid model when distributing material during topological optimization. A 3D geometric model of a part having a boundary shape is received. The geometric model is pre-processed to produce a variable-void mesh and to produce a frozen mesh representing the boundary shape. The geometric model is apportioned into a plurality of voxels, and a density value is adjusted for each voxel according to an optimization process. An iso-surface mesh is extracted from the voxel data, and a mesh Boolean intersection is derived between the extracted iso-surface mesh and the variable-void mesh. A mesh Boolean union between the mesh Boolean intersection and the frozen mesh.