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：US20150294502A1

公开(公告)日：2015-10-15

申请号：US14684123

申请日：2015-04-10

Applicant: DASSAULT SYSTEMES

Inventor： David Leo BONNER ,  Pascal SEBAH

IPC: G06T17/20

CPC classification number: G06T17/20 ,  G06F17/175 ,  G06F17/50 ,  G06F2217/08 ,  G06T17/00 ,  G06T2200/04 ,  G06T2200/24 ,  G06T2210/56

Abstract: The invention notably relates to a computer-implemented method for designing a three-dimensional modeled object comprising providing sample points of 3D curves sketched by a user; determining a volumetric function, within a predetermined class of volumetric functions, as the optimum of an optimization program that explores orientation vectors defined at the sample points under the constraint that the explored orientation vectors be normal to the 3D curves and respect a minimal rotation propagation condition over each 3D curve, wherein the optimization program penalizes a distance from the explored orientation vectors; and fitting the sample points with an isovalue surface of the volumetric function.

Abstract translation: 本发明特别涉及一种用于设计三维建模对象的计算机实现方法，包括提供由用户草拟的3D曲线的采样点; 确定在预定类别的体积函数内的体积函数作为最优化程序的最佳值，所述优化程序探索在所述探索的取向向量垂直于所述3D曲线并且遵守最小旋转传播条件的约束下在所述采样点处定义的取向向量 在每个3D曲线上，其中优化程序惩罚与探索的取向向量的距离; 并用等值面函数拟合样本点。

公开(公告)号：US20190197210A1

公开(公告)日：2019-06-27

申请号：US16232802

申请日：2018-12-26

Applicant: DASSAULT SYSTEMES

Inventor： David Leo BONNER ,  Claus Bech Wittendorf Pedersen

IPC: G06F17/50 ,  B33Y50/00 ,  B29C64/386

CPC classification number: G06F17/5018 ,  B29C64/386 ,  B33Y10/00 ,  B33Y50/00

Abstract: The disclosure notably relates to a computer-implemented method for designing a part by topology optimization. The method comprises defining a working volume for the optimization of the part and at least one boundary condition applied to the part, computing a vector field over the working volume, each vector of the field representing an optimal direction and a quantity of material corresponding to satisfy the at least one boundary condition, computing a set of flow lines by propagating from starting points in the vector field. For each flow line of the set, an element for the primary structure of the part is computed and a secondary structure of the part linking the set of primary as well as the secondary structure elements together is computed.

公开(公告)号：US20150294036A1

公开(公告)日：2015-10-15

申请号：US14684147

申请日：2015-04-10

Applicant: DASSAULT SYSTEMES

Inventor： David Leo BONNER

IPC: G06F17/50 ,  G06F17/10 ,  G06T15/08

CPC classification number: G06F17/50 ,  G06F17/10 ,  G06F17/175 ,  G06F17/5018 ,  G06F17/5086 ,  G06T15/08 ,  G06T17/00 ,  G06T2210/56 ,  G06T2215/06 ,  G06T2215/16

Abstract: The invention notably relates to a computer-implemented method for designing a three-dimensional modeled object that represents a physical entity. The method comprises providing sample points; determining a volumetric function, within a predetermined class of volumetric functions, as the optimum of an optimization program that explores orientation vectors defined at the sample points, wherein the optimization program penalizes a distance from the explored orientation vectors; and fitting the sample points with an isovalue surface of the volumetric function, wherein the program further penalizes oscillations of the fitted isovalue surface.

Abstract translation: 本发明特别涉及一种用于设计表示物理实体的三维建模对象的计算机实现的方法。 该方法包括提供采样点; 将预定类别的体积函数中的体积函数确定为探索在采样点定义的定向向量的优化程序的最优值，其中优化程序惩罚与被探索的取向向量的距离; 并且用所述体积函数的等值表面拟合所述采样点，其中所述程序进一步惩罚所述拟合的等值面的振荡。