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1. 发明授权

US09874504B2 Metal sheet bending fracture determination method and recording medium 有权
$Metal sheet bending fracture determination method and recording medium$
公开(公告)号：US09874504B2
公开(公告)日：2018-01-23
申请号：US14897057
申请日：2014-06-26
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Shigeru Yonemura , Takuya Kuwayama , Akihiro Uenishi , Toshiyuki Niwa
IPC分类号： G01N3/20 , G06F17/50
CPC分类号： G01N3/20 , G01N2203/0212 , G01N2203/0214 , G06F17/5009 , G06F17/5018 , G06F2217/16 , G06F2217/42
摘要： A bending fracture limit stress is calculated for each of (bend radius at sheet thickness center of a metal sheet)/(initial sheet thickness of the metal sheet); a fracture limit curve and a fracture limit stress are calculated from work hardening characteristics; a fracture limit curve corresponding to (the metal sheet bend radius at sheet thickness center)/(the initial sheet thickness of the metal sheet) is calculated; a corresponding fracture limit stress is calculated from stress of the element subject to determination and the fracture limit curve; a risk ratio that is a ratio between the stress of the element subject to determination and the fracture limit stress is computed; and performing fracture determination for the element subject to determination based on the risk ratio.

2. 发明授权

US09767227B2 Material structure prediction apparatus, product manufacturing method and material structure prediction method 有权
公开(公告)号：US09767227B2
公开(公告)日：2017-09-19
申请号：US14634248
申请日：2015-02-27
申请人： TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
发明人： Mitsuhiko Sano , Kazuhiro Ohara
IPC分类号： G01N25/02 , G06F17/50 , B21B37/00 , G01N33/20 , C21D11/00 , G05B15/02 , G05D23/19 , G06F17/18 , C21D9/573
CPC分类号： G06F17/50 , B21B37/00 , C21D9/573 , C21D11/00 , C21D11/005 , C21D2211/004 , G01N25/02 , G01N33/20 , G05B15/02 , G05D23/1917 , G06F17/18 , G06F17/5009 , G06F2217/42
摘要： The material structure prediction apparatus includes a temperature calculator calculating temperatures at calculation points, based on a temperature condition, a nucleation count calculator calculating a nucleation count in the calculation target region, a precipitated phase generation point determining module determining, from the calculation points, a precipitated phase generation point, a grain growth calculator calculating a grain growth of the precipitated phase at the precipitated phase generation point, and a material structure prediction module predicting the structure of the material, based on the grain growth of the precipitated phase.

3. 发明授权

US09703903B2 Designing a folded sheet object 有权
公开(公告)号：US09703903B2
公开(公告)日：2017-07-11
申请号：US14308029
申请日：2014-06-18
申请人： Dassault Systemes
发明人： Jean-Francois Rameau , Pascal Hebrard
IPC分类号： G06F17/50
CPC分类号： G06F17/5009 , G06F17/50 , G06F2217/06 , G06F2217/38 , G06F2217/42
摘要： It is provided a computer-implemented method for designing a folded sheet object, comprising the steps of providing (S10) panels separated by bend lines, including at least four adjacent panels forming a cycle and separated by concurrent bend lines, with predetermined angles between successive bend lines; and determining (S20) a control law linking the angles between the adjacent panels of the cycle, as a function of the predetermined angles between successive bend lines. Such a method improves the design of a folded sheet object.

4. 发明申请

US20170108418A1 Shifting A Forming Limit Curve Based On Zero Friction Analysis 审中-公开
公开(公告)号：US20170108418A1
公开(公告)日：2017-04-20
申请号：US15317585
申请日：2015-06-09
申请人： MAGNA INTERNATIONAL INC.
发明人： Thomas James Oetjens , Thomas Lome Chartrand , Alexander Paul Oetjens
IPC分类号： G01N3/28 , B21D22/02
CPC分类号： G01N3/28 , B21D22/00 , B21D22/02 , G01N2203/0214 , G01N2203/0218 , G06F17/5095 , G06F2217/42 , Y02T90/50
摘要： Sheet metal is provided as a template to create a finished product. After various metal transformation techniques are performed on the sheet metal, the sheet metal may be converted to the finished product. The sheet metal manipulation may encompass different techniques, such as thinning, bending, cutting, and the like. The manipulated sheet metal may be sourced for various products, such as a body of a vehicle.

5. 发明授权

US09619587B2 Decomposition of 3D geometry into developable surface patches and 2D cut patterns 有权
公开(公告)号：US09619587B2
公开(公告)日：2017-04-11
申请号：US13859051
申请日：2013-04-09
申请人： AUTODESK, Inc.
发明人： Saul Griffith , Martin Wicke , Keith Pasko , Geoffrey Irving , Sam Calisch , Tucker Gilman , Daniel Benoit , Jonathan Bachrach
IPC分类号： G06F17/50
CPC分类号： G06F17/50 , G06F2217/42
摘要： Embodiments disclosed herein provide techniques for decomposing 3D geometry into developable surface patches and cut patterns. In one embodiment, a decomposition application receives a triangulated 3D surface as input and determines approximately developable surface patches from the 3D surface using a variant of k-means clustering. Such approximately developable surface patches may have undesirable jagged boundaries, which the decomposition application may eliminate by generating a data structure separate from the mesh that contains patch boundaries and optimizing the patch boundaries or, alternatively, remeshing the mesh such that patch boundaries fall on mesh edges. The decomposition application may then flatten the patches into truly developable surfaces by re-triangulating the patches as ruled surfaces. The decomposition application may further flatten the ruled surfaces into 2D shapes and lay those shapes out on virtual sheets of material. A person, or machinery, may cut out those shapes from physical sheets of material based on the layout.

6. 发明授权

US09522419B2 Method and apparatus for making a part by first forming an intermediate part that has donor pockets in predicted low strain areas adjacent to predicted high strain areas 有权
标题翻译：通过在与预测的高应变区域相邻的预测的低应变区域中首先形成具有供体袋的中间部分来制造零件的方法和装置
公开(公告)号：US09522419B2
公开(公告)日：2016-12-20
申请号：US13045878
申请日：2011-03-11
申请人： Sergey Fedorovich Golovashchenko
发明人： Sergey Fedorovich Golovashchenko
IPC分类号： B21D22/24 , B21D22/00 , B21D37/08 , C21D7/02 , G06F17/50 , C21D1/673 , C21D9/48
CPC分类号： B21D22/24 , B21D22/00 , B21D37/08 , C21D1/673 , C21D7/02 , C21D9/48 , C21D2221/00 , C21D2221/10 , G06F17/5018 , G06F2217/42
摘要： A method of forming a part that has areas of high strain and predicted areas of low strain from a blank and method of designing a die for forming such a part. Predicted areas of low strain are identified that are adjacent to predicted areas of high strain. A pre-forming die is designed to form the blank to provide a donor pocket in an intermediate part in a predicted low strain area that is adjacent to the predicted high strain area. The donor pocket of the intermediate part is drawn into the predicted high strain area while forming the intermediate part into the part.
摘要翻译：从坯料形成具有高应变区域和低应变预测面积的部分的方法，以及设计用于形成这种部件的模具的方法。确定与预测的高应变区相邻的低应变预测区域。设计预成形模具以形成坯料，以在与预测的高应变区域相邻的预测的低应变区域中的中间部分中提供供体袋。将中间部分的供体袋拉入预测的高应变区域，同时将中间部分形成到该部分中。

7. 发明申请

US20160328502A1 Methods And Systems For Specifying Metal Necking Failure Criteria In Finite Element Analysis 有权
标题翻译：在有限元分析中指定金属颈缩破坏标准的方法与系统
公开(公告)号：US20160328502A1
公开(公告)日：2016-11-10
申请号：US14705295
申请日：2015-05-06
申请人： Livermore Software Technology Corporation
发明人： Xinhai Zhu , Zhidong Han
IPC分类号： G06F17/50
CPC分类号： G06F17/5018 , G06F2217/42
摘要： Methods and systems for specifying metal necking failure criteria in FEA are disclosed. FEA model contains many finite elements representing a structure, a loading condition and a metal necking failure criteria are received in a computer system. The loading condition includes a loading direction. The metal necking failure criteria includes critical strain and fracture strain values, the neck's width, and a profile of strain values between the critical strain value and the fracture strain value within the neck's width. At each solution cycle in the time-marching simulation of the structure, each finite element is check to determine whether it experiences a metal necking failure, which occurs when each finite element's strain obtained in that solution cycle is greater than an average strain value defined in a formula according to the critical strain and fracture strain values, the neck's width and the profile of the metal necking failure criteria.
摘要翻译：公开了在FEA中指定金属颈缩失效标准的方法和系统。 FEA模型包含许多表示结构的有限元素，在计算机系统中接收负载条件和金属颈缩失效标准。装载条件包括装载方向。金属颈缩失效标准包括临界应变和断裂应变值，颈部宽度以及颈部宽度内临界应变值和断裂应变值之间的应变值曲线。在结构时间模拟中的每个解决周期，每个有限元都被检查以确定它是否经历金属颈缩失败，当在该溶液周期中获得的每个有限元应变大于在根据临界应变和断裂应变值的公式，颈部宽度和金属颈缩失效标准的轮廓。

8. 发明申请

US20160199899A1 FORMING TOOLS HAVING TEXTURED SURFACES 有权
标题翻译：具有纹理表面的成型工具
公开(公告)号：US20160199899A1
公开(公告)日：2016-07-14
申请号：US15077056
申请日：2016-03-22
申请人： FORD GLOBAL TECHNOLOGIES, LLC
发明人： ZHIYONG CEDRIC XIA , JIAN CAO , QIAN WANG , RAJESH TALWAR , DONALD J. GRZINA , TIFFANY DAVIS LING , PINZHI LIU
IPC分类号： B21D24/04
CPC分类号： B21D22/02 , B21D22/00 , B21D22/20 , B21D24/04 , G06F17/50 , G06F17/5009 , G06F17/5018 , G06F17/5086 , G06F2217/42
摘要： A forming tool stamps sheet metal blanks into a desired shape. A contoured surface is defined for the forming tool so that respective portions of the metal blank flow over the contoured surface during forming. An intrinsic material flow pattern resulting from the contoured surface is compared to a desired flow in order to identify regions of the contoured surface having an insufficient flow that creates areas in the formed metal blank receiving less than a desired amount of metal. A surface microtexture is applied onto the contoured surface in a pattern selected to increase metal flow along the identified regions by providing a coefficient of friction in the identified regions that is reduced relative to adjacent regions of the contoured surface.
摘要翻译：成形工具将金属片坯料标记成所需的形状。为成形工具定义了一个轮廓的表面，使得金属坯料的各个部分在成形期间流过轮廓表面。将由轮廓表面产生的本征材料流动图案与期望的流动进行比较，以便识别具有不足的流动的轮廓表面的区域，该区域在所形成的金属坯料中接收小于期望量的金属的区域。将表面微纹理以选定的图案施加到轮廓表面上，以通过提供相对于轮廓表面的相邻区域减小的所识别的区域中的摩擦系数来增加沿着所识别的区域的金属流动。

9. 发明申请

US20150254586A1 MANUFACTURING COST ESTIMATOR 审中-公开
公开(公告)号：US20150254586A1
公开(公告)日：2015-09-10
申请号：US14200633
申请日：2014-03-07
申请人： aPriori Technologies, Inc.
发明人： Eugene Gorokhovsky , Constantine Kozhukhin , David Wayne Pherson
IPC分类号： G06Q10/06
CPC分类号： G06Q10/06313 , B22D46/00 , G06F17/5009 , G06F2217/41 , G06F2217/42 , G06Q10/063 , G06Q30/0206
摘要： Computer-based methods and systems are provided for improved recognition and presentation of parts, such as machine parts, as well as methods and systems for modeling and predicting the cost of such parts.

10. 发明申请

US20150161296A1 SECTIONLESS ADDENDUM DESIGN 审中-公开
标题翻译：无段附件设计
公开(公告)号：US20150161296A1
公开(公告)日：2015-06-11
申请号：US14527285
申请日：2014-10-29
申请人： Victor Apanovitch , Stefan Martin Walter Huhn , Yongguo Wu , Derek Edward George Peeling , Dong Zhao
发明人： Victor Apanovitch , Stefan Martin Walter Huhn , Yongguo Wu , Derek Edward George Peeling , Dong Zhao
IPC分类号： G06F17/50 , G05B19/4093
CPC分类号： G06F17/50 , B21D22/20 , B23P15/24 , G05B19/4093 , G05B2219/35044 , G06F17/5086 , G06F17/5095 , G06F2217/42 , Y02P80/40
摘要： A method is provided for the creation of an addendum for use in the design and production of sheet metal formed components, which method uses a sectionless approach. In a preferred approach, elevation curve (EC) lines are established relating to the component (ECc) and binder (ECb), and it is these lines which are used to design the addendum. Additional EC lines (EC1, EC2, EC3, etc.) can be added to modify or optimize the addendum design. The spaces between the EC lines are filled using various parameterized filling techniques so as to provide the addendum design. Optimization of the addendum can be achieved by modification of the various EC lines, so as to modify or control the various design parameters, in accordance with various quality or design criteria. A more rapid, and less complicated approach to addendum design is provided.
摘要翻译：提供了一种用于创建用于设计和生产钣金成形部件的附录的方法，该方法使用无切片方法。在优选的方法中，建立与组件（ECc）和粘合剂（ECb）相关的高程曲线（EC）线，并且是用于设计附录的这些线。可以添加其他EC行（EC1，EC2，EC3等）来修改或优化附录设计。使用各种参数填充技术填充EC行之间的空格，以提供附录设计。可以通过修改各种EC线来实现附件的优化，以便根据各种质量或设计标准来修改或控制各种设计参数。提供了一种更快速，更简单的附录设计方法。

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