公开(公告)号：US10853535B2

公开(公告)日：2020-12-01

申请号：US15457388

申请日：2017-03-13

Applicant: Dassault Systemes Simulia Corp.

Inventor： Mikhail Belyi

IPC: G06F30/20 ,  G06F111/10

Abstract: A computer-implemented method is provided for simulating a modal frequency response of a real-world object. The computer-implemented method includes dividing a plurality of excitation frequencies into a plurality of excitation frequency subsets, calculating modal frequency responses for at least a portion of the excitation frequencies in a given excitation frequency subset, and generating a simulation of the real-world object based at least in part on the modal frequency responses.

公开(公告)号：US10762252B2

公开(公告)日：2020-09-01

申请号：US14909055

申请日：2014-07-31

Applicant: Dassault Systemes Simulia Corp.

Inventor： Pradeep Gopalakrishnan ,  Raoyang Zhang ,  Hudong Chen

IPC: G06G7/48 ,  G06F30/20 ,  G06F30/23 ,  G06F17/10 ,  G06F111/10

Abstract: A method includes simulating, in a lattice velocity set, transport of particles in a volume of fluid, with the transport causing collision among the particles; and generating a distribution function for transport of the particles, wherein the distribution function comprises a thermodynamic step and a particle collision step, and wherein the thermodynamic step is substantially independent of and separate from the particle collision step.

公开(公告)号：US10303825B2

公开(公告)日：2019-05-28

申请号：US14981263

申请日：2015-12-28

Applicant: Dassault Systemes Simulia Corp.

Inventor： Kaustubh Rao ,  Blair Perot

IPC: G06F17/50 ,  G06F17/12

Abstract: A method, according to an embodiment, provides a simulation of a physical real-world system, by first generating a system of equations that includes a discrete representation of the real-world system being simulated. Next, the real-world system is simulated. In simulating the system, a user specified tolerance of a solution of the system of equations is obtained. Then, the system of equations is iteratively solved until a solution to the system of equations for a given iteration is within the user specified tolerance of the solution of the system of equations for approximately infinite iterations. In such an embodiment, the solution to the system of equations for the given iteration is determined to be within the user specified tolerance using an experimentally determined constant, an estimate of a minimum eigenvalue of the system of equations for the given iteration, and a residual of the system of equations for the given iteration.

公开(公告)号：US10255392B2

公开(公告)日：2019-04-09

申请号：US13296027

申请日：2011-11-14

Applicant: Mintae Kim ,  Vladimir Belsky ,  Mikhail Belyi

Inventor： Mintae Kim ,  Vladimir Belsky ,  Mikhail Belyi

IPC: G06F17/50

Abstract: A computer-implemented method is provided for use in finite element analysis of a three-dimensional (3D) representation of a physical object. The computer-implemented method includes combining a plurality of retained degrees of freedom of the 3D representation to form a root substructure, reducing a structure of the 3D representation on to a reduced automated multilevel substructuring (AMLS) subspace, and computing a plurality of eigenmodes and condensed operators based on the reduced structure, and computing constraint modes using an AMLS transformation matrix. The computer-implemented method also includes generating at least one substructure of the 3D representation based on the plurality of eigenmodes, constraint modes, and condensed operators, and storing the at least one substructure in a memory area.

公开(公告)号：US09582519B2

公开(公告)日：2017-02-28

申请号：US13967612

申请日：2013-08-15

Applicant: Dassault Systèmes Simulia Corp.

Inventor： Alexander Jacobus Maria Van der Velden

IPC: G06F3/048 ,  G06F17/30

CPC classification number: G06F17/30572 ,  G06F17/30277 ,  G06F17/30601 ,  G06F17/30864 ,  G06F17/30991 ,  G06F17/30994

Abstract: In the proposed approach cluster elements (bins) are made available as a keypad in the form of a cluster map. The user directly selects the cluster element (bin) with a mouse, touch or actual keypad. For each of the associated attributes, a cluster map is available that orders the attributes from high-to-low by color or shade intensity. When a cluster element is selected in one cluster map, that same cluster element is also highlighted in other cluster maps. For each of the cluster maps, a value axis is available which shows the value of the parameter for the selected cluster element. In the case of numerical values, the high/low attribute pattern across the cluster maps is easily visible. The selected data objects in the cluster map are displayed in a separate widget.

Abstract translation: 在所提出的方法中，集群元素（箱）可以以集群映射的形式作为键盘提供。 用户使用鼠标，触摸或实际键盘直接选择群集元素（bin）。 对于每个相关属性，可以使用通过颜色或阴影强度从高到低排列属性的集群映射。 当在一个集群映射中选择一个集群元素时，同一个集群元素也会在其他集群映射中突出显示。 对于每个集群映射，值轴可用，显示所选集群元素的参数值。 在数值的情况下，集群映射中的高/低属性模式很容易看到。 集群映射中选定的数据对象将显示在单独的窗口小部件中。

公开(公告)号：US09322259B2

公开(公告)日：2016-04-26

申请号：US14139471

申请日：2013-12-23

Applicant: Dassault Systemes Simulia Corp.

Inventor： Sandeep Kulathu ,  James Christopher Wohlever ,  Zhen-zhong Du

IPC: G06G7/48 ,  E21B43/26 ,  G01V99/00

CPC classification number: E21B43/26 ,  G01V99/005

Abstract: A computer method, apparatus and system simulate hydraulic fracturing. The computer system/method models a wellbore of an injection well. The wellbore model includes a hydraulic drill pipe element in a borehole and related fluid flow in the borehole. The borehole workflow is modeled in a subject rock formation. A simulator operatively coupled to the model obtains pressure values from the modeled borehole workflow and modeled wellbore. The simulator automatically converts pore pressure from the modeled borehole into a mechanical pressure load on the subject rock formation. The mechanical pressure as hydrostatic pressure is automatically applied to the surface of the rock formation affected by the borehole and responsively defines one or more pressure induced fractures. A 2D or 3D graphical representation of the pressure induced fractures in the rock formation are displayed on output.

Abstract translation: 计算机方法，装置和系统模拟水力压裂。 计算机系统/方法模拟注入井的井眼。 井眼模型包括钻孔中的液压钻杆元件和钻孔中的相关流体流动。 井眼工作流程以受试岩层为模型。 可操作地耦合到模型的模拟器从建模的井眼工作流程和建模的井眼获得压力值。 模拟器将孔隙压力从模拟的井眼转换为主体岩层上的机械压力载荷。 作为静水压力的机械压力被自动施加到受钻孔影响的岩层的表面，并且响应地定义一个或多个压力引起的裂缝。 输出中显示岩层压力诱导断层的2D或3D图形表示。

公开(公告)号：US20150178424A1

公开(公告)日：2015-06-25

申请号：US14138706

申请日：2013-12-23

Applicant: Dassault Systemes Simulia Corp.

Inventor： Harrington Hunter Harkness ,  Dan Cojocaru ,  Daniel Alexander Reece

IPC: G06F17/50

CPC classification number: G06F17/5018

Abstract: The present invention relates to a method and system for performing a finite element simulation. Embodiments of the present invention determine accurate contact simulations. A method according to the principles of the present invention begins by obtaining a first finite element model and a first computer aided design (CAD) model that the first finite element model represents. Next, a finite element simulation is performed using at least the first finite element model and the first CAD model. According to an embodiment of the present invention, performing the finite element simulation comprises determining one or more variations between the first finite element model and the first CAD model.

Abstract translation: 本发明涉及一种用于执行有限元模拟的方法和系统。 本发明的实施例确定准确的接触模拟。 根据本发明的原理的方法开始于获得第一有限元模型和第一有限元模型表示的第一计算机辅助设计（CAD）模型。 接下来，使用至少第一有限元模型和第一CAD模型来执行有限元模拟。 根据本发明的实施例，执行有限元模拟包括确定第一有限元模型和第一CAD模型之间的一个或多个变化。

公开(公告)号：US20130304440A1

公开(公告)日：2013-11-14

申请号：US13469957

申请日：2012-05-11

Applicant: Alexander Jacobus Maria Van der Velden

Inventor： Alexander Jacobus Maria Van der Velden

IPC: G06G7/48

CPC classification number: G06F11/2247 ,  G06Q10/067 ,  G06Q30/018

Abstract: A computer-implemented method for verifying a model in a product lifecycle management (PLM) system includes defining a model and an envelope of allowable model states and, based on one or more requirements, deriving at least one counterexample objective. The method also includes optimizing a set of parameters related to the allowable model states and the allowable model context, redefining at least one of the model and the allowable model states when the at least one counterexample objective is outside of a specified tolerance, and, after a predefined number of iterations, defining the model as verified.

Abstract translation: 用于验证产品生命周期管理（PLM）系统中的模型的计算机实现的方法包括定义模型和容许模型状态的包络，并且基于一个或多个要求，导出至少一个反例目标。 该方法还包括优化与允许的模型状态和允许的模型上下文相关的一组参数，当至少一个反目标目标在指定的公差之外时，重新定义模型和允许的模型状态中的至少一个，并且之后 预定义的迭代次数，将模型定义为已验证。

公开(公告)号：US11847391B2

公开(公告)日：2023-12-19

申请号：US16914730

申请日：2020-06-29

Applicant: Dassault Systemes Simulia Corp.

Inventor： Pradeep Gopalakrishnan ,  Raoyang Zhang ,  Hudong Chen ,  Junye Wang ,  Avinash Jammalamadaka

IPC: G06F30/28 ,  G06F7/485 ,  G06N7/08 ,  G06F113/08

CPC classification number: G06F30/28 ,  G06F7/485 ,  G06N7/08 ,  G06F2113/08

Abstract: Described are computer implemented techniques for simulating elements of a fluid flow. These techniques include storing in a memory state vectors for a plurality of voxels, the state vectors comprising a plurality of entries that correspond to particular momentum states of a plurality of possible momentum states at a voxel, storing in a memory a representation of at least one surface that is sized and oriented independently of the size and orientation of the voxels, perform interaction operations on the state vectors, the interaction operations modelling interactions between elements of different momentum states, perform surface interaction operations on the representation of the surface, the surface interaction operations modelling interactions between the surface and substantially all elements of voxels, and performing move operations on the state vectors to reflect movement of elements to new voxels.

公开(公告)号：US11763048B2

公开(公告)日：2023-09-19

申请号：US18074646

申请日：2022-12-05

Applicant: Dassault Systemes Simulia Corp.

Inventor： Hudong Chen ,  Raoyang Zhang ,  Pradeep Gopalakrishnan

IPC: G06F30/20 ,  G01P5/00 ,  G06N7/08 ,  G06F111/10

CPC classification number: G06F30/20 ,  G01P5/00 ,  G06N7/08 ,  G06F2111/10

Abstract: Computer implemented techniques for simulating a fluid flow about a surface of a solid, include receiving a coordinate system for representation of a curvilinear mesh that conforms to the surface of the solid, simulating, with a lattice velocity set transport of particles in a volume of fluid, with the transport causing collision among the particles, executing a distribution function for transport of the particles, with the distribution function including a particle collision determination and a change in particle distribution associated with the curvilinear mesh, performing by the computing system, advection operations in the coordinate system under constraints applied to particle momentum values and mapping by the computer system values resulting from simulating onto the curvilinear mesh by translation of the particle momentum values and spatial coordinates determined in the coordinate system into momentum and spatial values in the curvilinear space.