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：US10948896B2

公开(公告)日：2021-03-16

申请号：US14974414

申请日：2015-12-18

Applicant: Dassault Systemes Simulia Corp.

Inventor： Claus Bech Wittendorf Pedersen

IPC: G06F17/50 ,  G05B19/4099 ,  G06F30/00 ,  G06F30/20 ,  G06F119/18 ,  B33Y50/02

Abstract: One goal in automated product designing of additive manufacturing is to obtain designs having overhangs without support structures if the criterion for overhangs is rigorously geometrical. In an embodiment of the present invention, designers can request automated optimization and design, using simulation and sensitivity-based optimization, of structures having overhangs in the print direction that do not need any support structures. In an embodiment, a method includes, at a processor, calculating model design responses and model sensitivities of a computer-aided engineering (CAE) model in a CAE system based on design variables of the CAE model for various design responses being either applied in objective or constraints. The method further includes optimizing values of the design variables. The method further includes calculating physical design variables by employing a penalty function. Additionally, the calculations can also be in conjunction with employing material interpolation schemes. The method further includes generating an optimized CAE model using the calculated physical design variables. The optimized CAE model is free or partly free of support structures. The method further includes printing the optimized CAE model being free or partly free of support structures.