公开(公告)号：US20210200914A1

公开(公告)日：2021-07-01

申请号：US17132650

申请日：2020-12-23

Applicant: DASSAULT SYSTEMES

Inventor： Jean-François RAMEAU ,  Ruixian RENAUD

IPC: G06F30/17 ,  G06F30/12

Abstract: A method for designing a mechanism including rigid bodies and mechanical joints including obtaining input parameter values which represent the mechanism in an input state. The method also includes determining output parameter values which represent the mechanism in an output state. The determining includes minimizing an objective function under constraints. The objective function penalizes a distance between the output dimensional values and the input dimensional values. The constraints include a first constraint representing verification of the closure equation by the output parameter values. The constraints further include a second constraint representing mobility of the mechanism in the output state. This forms an improved solution for designing a mechanism comprising rigid bodies and mechanical joints.

公开(公告)号：US20210200420A1

公开(公告)日：2021-07-01

申请号：US17125695

申请日：2020-12-17

Applicant: DASSAULT SYSTEMES

Inventor： Guillaume DAYDE ,  Christophe DELFINO

IPC: G06F3/0481 ,  G06F3/0484

Abstract: A field user interface that displays 3D objects, receives a selection of an object by the user, and uses a comparison between sizes of objects and thresholds to perform the selection, in order that the selected objects are consistent with the intent of the user.

公开(公告)号：US20210192828A1

公开(公告)日：2021-06-24

申请号：US17124148

申请日：2020-12-16

Applicant: DASSAULT SYSTEMES

Inventor： Arnaud BALAY ,  Jason LABIOD

IPC: G06T15/00 ,  G06F3/0481 ,  G06F3/01

Abstract: A computer-implemented method for modifying the rendering of a region of a 3D scene in an immersive environment, the region being computed based on a 3D position of a head tracking device and a 3D position of at least one hand tracking device.

公开(公告)号：US11042674B2

公开(公告)日：2021-06-22

申请号：US15729216

申请日：2017-10-10

Applicant: Dassault Systemes Simulia Corp.

Inventor： Adrien Mann ,  Chenghai Sun ,  Hudong Chen ,  Raoyang Zhang ,  Franck Léon Pérot

IPC: G06F30/20 ,  G06F30/15 ,  G06F30/23 ,  G06F119/10

Abstract: The description describes one or more processing devices and one or more hardware storage devices storing instructions that are operable, when executed by the one or more processing devices, to cause the one or more processing devices to perform operations including modeling the porous material as a two-dimensional interface, in a simulation space, in which fluid flows and sound waves travel through the porous material and experience pressure and acoustic losses. The operations also include simulating, in the simulation space, fluid flow and propagation of sound waves, the activity of the fluid being simulated so as to simulate movement of elements within the simulation space and across the interface, where the simulation of the movement of the elements across the interface is governed by the model.

公开(公告)号：US20210173985A1

公开(公告)日：2021-06-10

申请号：US16707163

申请日：2019-12-09

Applicant: Dassault Systemes Simulia Corp.

Inventor： Martin Sanchez-Rocha

IPC: G06F30/28 ,  G06N5/02 ,  G06T17/20 ,  G06F17/13

Abstract: Disclosed are techniques for simulating a physical process and for determining boundary conditions for a specific energy dissipation rate of a k-Omega turbulence fluid flow model of a fluid flow, by computing from a cell center distance and fluid flow variables a value of the specific energy dissipation rate for a turbulent flow that is valid for a viscous layer, buffer layer, and logarithmic region of a boundary defined in the simulation space. The value is determined by applying a buffer layer correction factor as a first boundary condition for the energy dissipation rate and by applying a viscous sublayer correction factor as a second boundary condition for the energy dissipation rate.

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.

公开(公告)号：US10929721B2

公开(公告)日：2021-02-23

申请号：US15973165

申请日：2018-05-07

Applicant: DASSAULT SYSTEMES

Inventor： Louis Dupont De Dinechin ,  Asma Rejeb Sfar

IPC: G06K9/62 ,  G06K9/46 ,  G06N20/10 ,  G06T7/70 ,  G06N3/08

Abstract: A computer-implemented method of signal processing comprises providing images. The method comprises for each respective one of at least a subset of the images: applying a weakly-supervised learnt function, the weakly-supervised learnt function outputting respective couples each including a respective localization and one or more respective confidence scores, each confidence score representing a probability of instantiation of a respective object category at the respective localization. The method further comprises determining, based on the output of the weakly-supervised learnt function, one or more respective annotations, each annotation including a respective localization and a respective label representing instantiation a respective object category at the respective localization. The method further comprises forming a dataset including pieces of data, each piece of data including a respective image of the subset and at least a part of the one or more annotations determined for the respective image. This improves the field of object detection.

公开(公告)号：US10885232B2

公开(公告)日：2021-01-05

申请号：US16002168

申请日：2018-06-07

Applicant: Dassault Systemes

Inventor： Pierre Pagliughi ,  Pascal Hebrard ,  Rohan Keswani ,  Patrick Merlat

IPC: G06F30/00 ,  G06T17/10 ,  G06F111/10 ,  G06F113/20 ,  G06F119/18

Abstract: A computer-implemented method designs and manufactures a supporting structure for the packaging of a solid object. The supporting structure comprises a plurality of linear support elements that sustain the solid object inside a packaging container. The method includes: a) providing, as an input, a three-dimensional model of the solid object; b) computing a first cumulative linear mass density distribution of the solid object according to a first axis (x); and c) using said first cumulative linear mass density distribution to determine the positions, along said first axis, of linear support elements oriented transversally to said first axis. The resultant positions enable even distribution of the weight of the solid object among the linear support elements. A computer program product, computer-readable data-storage medium, and CAD system carry out such a method.

公开(公告)号：US10830584B2

公开(公告)日：2020-11-10

申请号：US14288286

申请日：2014-05-27

Applicant: Dassault Systemes

Inventor： Malika Boulkenafed ,  Fabrice Francis Michel

IPC: G01B21/16 ,  G06F3/01 ,  G06K9/00 ,  G06K9/62

Abstract: It is provided a computer-implemented method for performing body posture tracking, comprising the steps of collecting (S10) depth measurements of a body with at least one depth sensor; collecting (S20) inertial measurements with at least one inertial sensor attached to the body; and determining (S30) at least one posture of the body as a function of the depth measurements and the inertial measurements. Such a method improves the field of body posture tracking.

公开(公告)号：US20200349300A1

公开(公告)日：2020-11-05

申请号：US16864590

申请日：2020-05-01

Applicant: Dassault Systemes Americas Corp.

Inventor： Pierre-Olivier Lemieux ,  Quentin Bourret ,  Rachid Aissaoui ,  Nicola Hagemeister

IPC: G06F30/10

Abstract: Embodiments determine positioning of a mannequin. One such embodiment begins by determining a frame of a grasping element of a mannequin represented by a computer-aided design (CAD) model and determining a frame of an object to be grasped, where is object is also represented by a CAD model. To continue, degrees of freedom of the mannequin are specified and limits on the specified degrees of freedom are set. In turn, using an inverse kinematic solver, positioning of the mannequin grasping the object is determined based upon: (i) the determined frame of the grasping element, (ii) the determined frame of the object, (iii) the specified degrees of freedom, and (iv) the set limits on the specified degrees of freedom.