公开(公告)号：US20230315945A1

公开(公告)日：2023-10-05

申请号：US18188331

申请日：2023-03-22

Applicant: DASSAULT SYSTEMES

Inventor： Martin-Pierre SCHMIDT ,  Peter CLAUSEN ,  Claus Bech Wittendorf PEDERSEN ,  Pascal HEBRARD

IPC: G06F30/20 ,  G06F30/10

CPC classification number: G06F30/20 ,  G06F30/10

Abstract: A computer-implemented method for designing a manufacturing product. The method includes obtaining a CAD model representing the manufacturing product. The CAD model includes a feature tree. The feature tree has one or more CAD parameters each having an initial value. The method also includes obtaining an optimization program. The optimization program is specified by one or more use and/or manufacturing performance indicators. The one or more indicators having one or more objective functions and/or one or more constraints. The method further includes modifying the initial values of the one or more CAD parameters by solving the optimization program using a gradient-based optimization method. The optimization method has as free variable the one or more CAD parameters and uses sensitivities. Each sensitivity is an approximation of a respective derivative of a respective performance indicator with respect to a respective CAD parameter.

公开(公告)号：US20230133725A1

公开(公告)日：2023-05-04

申请号：US17973227

申请日：2022-10-25

Applicant: DASSAULT SYSTEMES

Inventor： Martin-Pierre SCHMIDT ,  Claus Bech Wittendorf PEDERSEN ,  David Leo BONNER

IPC: G06F30/20 ,  G06T17/20

Abstract: A computer-implemented method for designing a 3D modeled object representing a transmission mechanism with a target 3D motion behavior. The method including obtaining a 3D finite element mesh and data associated to the mesh, performing a topology optimization based on the mesh and on the associated data, therefore obtaining a density field representing distribution of material quantity of the 3D modeled object. The method further includes computing a signed field based on the density field and the associated data, identifying one or more patterns of convergence and divergence in the signed field, each pattern forming a region of the signed field, and for each identified pattern, identifying a joint representative of the identified pattern and replacing a part of the density field corresponding to the respective region formed by the identified pattern by a material distribution representing the identified joint.

公开(公告)号：US20210182456A1

公开(公告)日：2021-06-17

申请号：US17124386

申请日：2020-12-16

Applicant: DASSAULT SYSTEMES

Inventor： Laura Marion COURET ,  Martin-Pierre SCHMIDT ,  Claus Bech Wittendorf PEDERSEN

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

Abstract: A computer-implemented method for designing a 3D modeled object. The 3D modeled object represents a mechanical part formed in a material having an anisotropic behavior with respect to a physical property. The method includes obtaining a 3D finite element mesh and data associated to the 3D finite element mesh. The data associated to the 3D finite element mesh includes a plurality of forces and boundary conditions. The plurality of forces forms multiple load cases. The method further comprises optimizing an orientation field distributed on the 3D finite element mesh with respect to an objective function. The objective function rewards orientation continuity with respect to the physical property. The optimizing is based on the 3D finite element mesh and on the data associated to the 3D finite element mesh. This constitutes an improved method for designing a 3D modeled object.

公开(公告)号：US20230385484A1

公开(公告)日：2023-11-30

申请号：US18324815

申请日：2023-05-26

Applicant: DASSAULT SYSTEMES

Inventor： Peter CLAUSEN ,  Martin-Pierre SCHMIDT ,  Claus Bech Wittendorf PEDERSEN ,  Pascal HEBRARD

IPC: G06F30/23 ,  G06F30/17

CPC classification number: G06F30/23 ,  G06F30/17 ,  G06F2113/24

Abstract: A computer-implemented method for designing a sheet part comprising beads. The method comprises providing a CAD model representing the part. The CAD model includes a feature tree. The feature tree has one or more CAD parameters each having an initial value. The method further comprises providing a bead optimization program specified by one or more use and/or manufacturing performance indicators. The one or more indicators comprise one or more objective function(s) and/or one or more constraints. The method further comprises modifying the initial values of the one or more CAD parameters by solving the optimization program using a gradient-based bead optimization method. The optimization method has as free variables the one or more CAD parameters. The optimization method uses sensitivities. Each sensitivity is an approximation of a respective derivative of a respective performance indicator with respect to a respective CAD parameter.

公开(公告)号：US20230274048A1

公开(公告)日：2023-08-31

申请号：US18168991

申请日：2023-02-14

Applicant: DASSAULT SYSTEMES DEUTSCHLAND GMBH

Inventor： Claus Bech Wittendorf PEDERSEN ,  Roman SARTORTI ,  Torsten MOECKER

IPC: G06F30/17 ,  G06F30/23

CPC classification number: G06F30/17 ,  G06F30/23

Abstract: A computer-implemented method for designing a mechanical product formed in one or more materials including obtaining inputs including a finite element model representing the mechanical product and having an initial value of design variables, one or more load cases, a corresponding load history for each load case, boundary conditions, fatigue properties of the one or more materials, and a fatigue calculation scheme. The method further includes computing a distribution of fatigue damage over the finite element model based on the inputs, computing a distribution of sets of fatigue damage sensitivities over the finite element model based on the computed distribution of fatigue damage, each fatigue damage sensitivity of each set approximating a derivative of the fatigue damage relative to a respective design variable, and updating the value of the design variables based on the fatigue damage sensitivities.