公开(公告)号：EP3314484A1

公开(公告)日：2018-05-02

申请号：EP16744548.5

申请日：2016-06-24

申请人： Neturen Co., Ltd.

发明人： HORINO, Takashi ,  TERAJIMA, Akira ,  IKUTA, Fumiaki ,  INOUE, Hiroki

IPC分类号： G06F17/50

CPC分类号： B23K11/115 ,  B23K11/26 ,  B23K11/314 ,  G06F17/5018 ,  G06F2217/42

摘要： A direct resistance heating simulation method is provided. In this method, a welding region and its peripheral region of steel sheets to be welded by a pair of electrodes are divided into a plurality of elements. A coupled analysis is performed such that a temperature, a metal structure, stress and strain at each element are determine in a mutually associated manner based on Joule loss obtained through a current analysis and a magnetic field analysis for each element. The coupled analysis is repeated to predict an effect of one or more parameters, including at least one of a frequency, a magnitude and an application time of electric current to be applied to the electrodes, a cooling time, a pressure applied from the electrodes to the steel sheets and a shape of the electrodes, on welding quality after a post-heating by direct resistance heating and to improve weld strength.

公开(公告)号：EP2371464A4

公开(公告)日：2017-05-17

申请号：EP09834562

申请日：2009-06-24

申请人： NIPPON STEEL & SUMITOMO METAL CORP

发明人： MIYAGI TAKASHI ,  TANAKA YASUHARU ,  OGAWA MISAO

IPC分类号： B21D22/00 ,  G06F17/50

CPC分类号： B21D22/20 ,  G06F17/5018 ,  G06F17/5095 ,  G06F2217/12 ,  G06F2217/16 ,  G06F2217/42 ,  Y02P90/265

摘要： A method of analyzing a cause of springback of the invention includes: performing a forming analysis to calculate forming data of a formed product; decomposing a component into an in-plane stress component and a bending moment component; generating a before-calculation individual decomposition forming data; performing a calculation to generate an after-calculation individual decomposition forming data; analyzing a first springback configuration and a second springback configuration; obtaining a degree of influence of a stress in each of the areas with respect to springback deformation; and displaying the degree of influence with respect to the springback deformation.

摘要翻译： 分析本发明的弹回的原因的方法，包括：执行形成分析以计算成形形成的产品的数据; 分解的成分成的面内应力分量和弯曲力矩分量; 生成前-计算数据形成个别分解; 执行计算在后计算个体分解以产生形成数据; 分析第一回弹配置和第二弹簧背面配置; 获得的程度的应力的影响在每个区域相对于回弹变形; 和显示的影响程度相对于回弹变形。

公开(公告)号：EP3151138A1

公开(公告)日：2017-04-05

申请号：EP15826302.0

申请日：2015-07-30

申请人： Nippon Steel & Sumitomo Metal Corporation

发明人： SUZUKI, Toshiya ,  NAKAZAWA, Yoshiaki

IPC分类号： G06F17/50 ,  B21D22/00 ,  B21D37/20

CPC分类号： G06F17/5018 ,  B21D22/00 ,  B21D37/20 ,  B21D53/88 ,  G06F2217/12 ,  G06F2217/42 ,  Y02P90/265

摘要： [Object] To provide a model setting method of a finite element model used for forming simulation, which is capable of executing forming simulation of a metal plate highly accurately and efficiently.
[Solution] Provided is a model setting method for setting a finite element model for simulating forming of a metal plate by a forming tool by using a finite element method, by a processor included in a computer, the model setting method including: in setting a forming tool model that represents the forming tool, setting at least a part of a metal plate contacting surface that contacts the metal plate, in the forming tool model, as a surface layer that has characteristics of an elastic body or an elasto-plastic body; and setting a part that supports the surface layer in the forming tool model, as a base body that has characteristics of a rigid body.

摘要翻译： 本发明的课题提供一种用于成形模拟的有限元模型，所有这些都能够执行的金属板的成形模拟高度精确地设定和高效的模型设定方法。 [解决方法]本发明提供一种用于通过使用有限元法设置用于模拟由一个成形工具成形的金属板的有限元模型，由包括在计算机中的处理器，所述模型设置方法包括：在模型设置方法：在设置 成形工具模型做darstellt成形工具，设置至少一个金属板接触的表面的一部分没有接触所述金属板在成形工具模型，作为表面层具有做在弹塑性体的弹性体的或特点; 和设定的一部分并支持成形工具模型的表面层，作为基体确实具有刚性体的特性。

公开(公告)号：EP3133513A2

公开(公告)日：2017-02-22

申请号：EP16173020.5

申请日：2016-06-04

申请人： The Boeing Company

发明人： TAT, Hong Hue ,  GREENE, Kelly M. ,  LIN, John Z. ,  BREWER, Carlyn R. ,  KELLER, Russell Lee

IPC分类号： G06F17/50

CPC分类号： G01N29/44 ,  G01N29/04 ,  G01N2291/011 ,  G01N2291/2694 ,  G06F17/5018 ,  G06F2217/16 ,  G06F2217/42 ,  G06F2217/44

摘要： A method for analyzing a structure includes processing nondestructive inspection (NDI) data (112) for a multi-layer structure to define areas of inconsistency at an internal layer or an interface between adjacent layers. The method includes mapping (106) the areas of inconsistency to finite elements of a finite element model (114) of a nominal of the structure. These finite elements are thereby identified as affected finite elements and include finite elements for the affected internal layer or interface. The method includes producing a reconstructed finite element model (116) of the affected structure from the nominal finite element model (114), and a modified property or state value assigned to respective element datasets of the affected finite elements. The method includes performing a finite element method (FEM) failure analysis (110) of the reconstructed finite element model (116) under a load, which indicates an extent of residual integrity of the affected structure.

摘要翻译： 一种用于分析结构的方法包括处理多层结构的非破坏性检查（NDI）数据（112）以限定内层或相邻层之间的界面处的不一致的区域。 该方法包括将不一致的区域映射（106）到结构标称的有限元模型（114）的有限元。 因此，这些有限元素被确定为受影响的有限元素，并且包括受影响的内层或界面的有限元素。 该方法包括从标称有限元模型（114）产生受影响结构的重建有限元模型（116），以及分配给受影响有限元的各个元素数据集的修改后的属性或状态值。 该方法包括在负载下执行重建的有限元模型（116）的有限元法（FEM）故障分析（110），其指示受影响结构的残余完整性的程度。

公开(公告)号：EP2999557A4

公开(公告)日：2016-09-21

申请号：EP14800412

申请日：2014-05-16

申请人： MAGNA INT INC

发明人： OETJENS THOMAS JAMES ,  CHARTRAND THOMAS LOME ,  SHULKIN BORIS

IPC分类号： G06F17/50 ,  B21D21/00 ,  B21D22/00 ,  G01N3/08 ,  G01N19/08

CPC分类号： G01N19/08 ,  G01N3/08 ,  G06F17/5009 ,  G06F17/5018 ,  G06F17/5095 ,  G06F2217/16 ,  G06F2217/42

公开(公告)号：EP2942722A1

公开(公告)日：2015-11-11

申请号：EP15158340.8

申请日：2015-03-10

申请人： Siemens Product Lifecycle Management Software Inc.

发明人： LeTourneau, Craig ,  Hu, Weifang

IPC分类号： G06F17/50

CPC分类号： G06F17/50 ,  G06F2217/42 ,  G06F2217/44

摘要： Methods for product data management and corresponding systems and computer-readable mediums. A method includes receiving (802) one or more inputs including an input definition (150), one or more ply definitions (154), and one or more ramp definitions (156), the input definition (150) relating to a first surface (302) between or including an outer mold line (OML) (1106) and an inner mold line (IML) (1104) of a laminated composite part (1102). The method includes creating (804) an output definition (152) from the inputs. The method includes creating (806) a final solid (702) from the output definition (152) and the inputs, the output definition (152) relating to first surface (302) between or including the OML (1106) and the IML (1104) of a laminated composite part (1102). The method includes transmitting (808) the final solid (702).

摘要翻译： 方法产品数据管理和相应的系统和计算机可读介质。 一种方法，包括：接收与第一表面（802）的一个或多个输入，包括关于输入定义（150），一个或多个帘布层的定义（154），以及一个或多个斜坡定义（156）所述输入定义（150）（ 302）之间或在包括外模线（OML）（1106）和一层压复合部件（1102）的内部模线（IML）（1104）。 该方法包括：创建（804），以从输入输出定义（152）。 该方法包括：创建（806）一个最终的固体（702）从所述输出定义（152）和所述输入端，与第一表面（302）之间的输出定义（152）或包括OML（1106）和IML（1104 ）一个复合材料层合部分（1102）的。 该方法包括：发送（808）最终的固体（702）。

公开(公告)号：EP2919138A1

公开(公告)日：2015-09-16

申请号：EP12888094.5

申请日：2012-11-06

申请人： JFE Steel Corporation

发明人： SAITO, Takanobu

IPC分类号： G06F17/50

CPC分类号： G06T17/10 ,  G06F17/5018 ,  G06F17/5095 ,  G06F2217/08 ,  G06F2217/42 ,  G06T2207/10004 ,  G06T2207/30248 ,  G06T2219/2004

摘要： A shape optimization analyzing method according to the present invention is an analysis method for optimizing part of a structure model using plane elements or three-dimensional elements. The method includes a design-space defining step of defining a portion of the structure model that is to be optimized as a design space, an optimization-block-model generating step of generating an optimization block model in the defined design space, the optimization block model being formed of three-dimensional elements and analyzed for optimization, a coupling step of coupling the generated optimization block model with the structure model, and an analyzing step of performing analysis in accordance with input of an analytic condition to calculate an optimal shape of the optimization block model.

摘要翻译： 根据本发明的形状优化分析方法是使用平面元件或三维元素优化结构模型的一部分的分析方法。 该方法包括定义要被优化为设计空间的结构模型的一部分的设计空间定义步骤，在所定义的设计空间中生成优化块模型的优化块模型生成步骤，优化块 模型由三维元素形成并进行优化分析，将生成的优化块模型与结构模型耦合的耦合步骤，以及根据分析条件的输入执行分析以计算最佳形状的分析步骤 优化块模型。

公开(公告)号：EP2450813A2

公开(公告)日：2012-05-09

申请号：EP10722726.6

申请日：2010-05-12

申请人： Airbus Operations, S.L.

发明人： NAVARRO LUNA, Antonio ,  VALERIANO LA TORRE, José

IPC分类号： G06F17/50

CPC分类号： G06F17/5095 ,  G06F2217/42 ,  G06F2217/44 ,  G06F2217/46

摘要： Computer-assisted method for optimising surfaces of composite-material structures as part of a design process that includes the following stages: a) Providing a multi-cell surface (11) of the structure obtained using aerodynamic calculations; b) Transforming said multi-cell surface (11) into an optimised surface (13) with fewer cells, concatenating contiguous cells and maintaining point and tangent continuity between them; c) Using said optimised surface (13) as geometric master when designing the components of the structure. The method is particularly applicable to the design of structures with a plurality of components and in particular fuselages of aircraft made of composite material. The invention also relates to a computer program for performing the method.

摘要翻译： 用于优化复合材料结构表面的计算机辅助方法作为设计过程的一部分，其包括以下阶段：a）提供使用空气动力学计算获得的结构的多单元表面（11）; b）将所述多细胞表面（11）转化成具有较少细胞的优化表面（13），连接相邻细胞并维持它们之间的点和切线连续性; c）当设计结构的部件时，使用所述优化的表面（13）作为几何主体。 该方法特别适用于具有多个组件，特别是由复合材料制成的飞机的机身的结构的设计。 本发明还涉及一种用于执行该方法的计算机程序。

公开(公告)号：EP2390800A1

公开(公告)日：2011-11-30

申请号：EP11166530.3

申请日：2011-05-18

申请人： Livermore Software Technology Corporation

发明人： Xinhai, Zhu ,  Li, Zhang

IPC分类号： G06F17/50

CPC分类号： G06F17/5018 ,  G06F2217/16 ,  G06F2217/42 ,  Y02T10/82

摘要： Systems and methods of predicting sheet metal forming failure using numerical simulations (e.g., finite element analysis) are disclosed. A FEA model is defined for a particular sheet metal forming process. Blank sheet metal is modeled with a plurality of shell elements. Additionally, a deformation path-dependent forming limit diagram (FLD) is converted to a path-independent FLD. A time-marching simulation of the sheet metal forming process is conducted using the FEA model. At each solution cycle, equivalent strain at each integration point of shell element is checked against the corresponding forming limit strain value of the path-independent FLD. The ratio of the equivalent strain and the forming limit strain is defined as formability index. A time history of the formability index of each shell element is saved into a file and displayed to a monitor upon user's instructions. When a particular element's formability index reaches one or higher, a localized necking is predicted.

摘要翻译： 公开了使用数值模拟（例如，有限元分析）预测钣金成形故障的系统和方法。 FEA模型是针对特定的钣金成型工艺定义的。 空白金属板用多个外壳元件建模。 另外，变形路径相关的成形极限图（FLD）被转换为路径无关的FLD。 使用FEA模型进行钣金成型过程的时间推移模拟。 在每个溶液循环中，检查壳单元每个积分点处的相对应变，与相应的不依赖路径的FLD的形成极限应变值进行对比。 等效应变和成形极限应变的比值定义为成形性指数。 每个shell元素的可成形性索引的时间历史记录保存到文件中，并根据用户的指示显示给监视器。 当特定元素的成形性指数达到一个或更高时，预测出本地化颈缩。

公开(公告)号：EP2136197A4

公开(公告)日：2011-06-29

申请号：EP08740385

申请日：2008-04-14

申请人： NIPPON STEEL CORP

发明人： UENISHI AKIHIRO ,  ARIGA TAKASHI ,  YONEMURA SHIGERU ,  NITTA JUN ,  YOSHIDA TOHRU

IPC分类号： G01N3/28 ,  G06F17/50

CPC分类号： G06F17/5095 ,  G01N2203/0216 ,  G06F17/5018 ,  G06F2217/42

摘要： When discretizing an analysis target part into plural elements and performing analysis, sheet thickness reduction rate or maximum principal strain at an equivalent position including a same element is compared by either a manner of combining two adjacent elements after the analysis or a manner of changing an element discretization size with two types and performing the analysis, and the element where the difference is large is extracted as a fracture risk portion. With this structure, a fracture risk portion can be extracted reliably when a fracture is predicted by a finite element method.