公开(公告)号：US11669660B2

公开(公告)日：2023-06-06

申请号：US16673649

申请日：2019-11-04

Applicant: DASSAULT SYSTEMES

Inventor： Martin-Pierre Hugo Schmidt ,  Auxkin Ortuzar Del Castillo ,  Claus Bech Wittendorf Pedersen

IPC: G06F30/23 ,  B29C64/393 ,  G06F17/18 ,  B33Y50/02 ,  G06F119/18

CPC classification number: G06F30/23 ,  B29C64/393 ,  G06F17/18 ,  B33Y50/02 ,  G06F2119/18

Abstract: The disclosure notably relates to a computer-implemented method for designing a modeled object. The method includes obtaining a finite element mesh, data associated to the finite element mesh and a non-uniform distribution of one or more local quantity constraints. The data associated to the finite element mesh include forces, boundary conditions, parameters, and a global quantity constraint. The method also comprises performing a topology optimization based on the finite element mesh, the data associated to the finite element mesh, and the non-uniform distribution. The method improves the design of a modeled object representing a mechanical part by topology optimization.

公开(公告)号：US20220405442A1

公开(公告)日：2022-12-22

申请号：US17748272

申请日：2022-05-19

Applicant: Dassault Systemes Simulia Corp.

Inventor： Martin-Pierre Hugo Schmidt ,  Claus Bech Wittendorf Pedersen ,  Tanguy Theo Navez

IPC: G06F30/23 ,  G06F30/10

Abstract: A discrete geometrical pattern library guides a method for design optimization of a finite element model in a computer aided design (CAD) environment. Boundary conditions are applied to the finite element model, design variables for the bounded finite element model are initialized, and an objective function for the finite element model is evaluated. A gradient of the objective function is evaluated with respect to the design variables, an appearance constraint function is evaluated for the finite element model, and a gradient of the appearance constraint function is evaluated with respect to the design variables. The design variables are updated using a mathematical programming, and a convergence in the design optimization is detected, producing a converged design optimization of the finite element model is produced.

公开(公告)号：US10915680B2

公开(公告)日：2021-02-09

申请号：US16230130

申请日：2018-12-21

Applicant: Dassault Systemes Simulia Corp.

Inventor： Claus Bech Wittendorf Pedersen ,  Nikolai Gerzen ,  Martin-Pierre Hugo Schmidt

IPC: G06F30/23 ,  G06F119/18 ,  G06F111/10

Abstract: Embodiments automatically determine optimized designs for manufacturing real-world objects. An embodiment begins with defining a finite element model comprised of a plurality of elements that represents a real-world object. Next, equilibriums and design responses of the object in response boundary conditions are determined, which includes calculating a local volume constraint for a given element of the finite element model. Then, design response sensitivities of the object in response to the boundary conditions are determined, which includes differentiating the calculated local volume constraint to determine sensitivity of a sizing design variable. In turn, the model is iteratively optimized with respect to the sizing design variable using the determined equilibriums and the determined design responses, including the calculated local volume constraint, and the determined design response sensitivities, including the determined sensitivity of the sizing design variable to determine an optimized value of the sizing design variable.