专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20130041634A1 Initial Configuration of a Blank in Sheet Metal Forming Simulation 审中-公开
标题翻译：钣金成型模拟中坯料的初始配置
公开(公告)号：US20130041634A1
公开(公告)日：2013-02-14
申请号：US13208207
申请日：2011-08-11
申请人： Xinhai Zhu , Li Zhang
发明人： Xinhai Zhu , Li Zhang
IPC分类号： G06F17/10
CPC分类号： G06F17/5018 , G06F2217/42
摘要： An improved system and method of creating an initial configuration of a finite element mesh model of a blank sheet metal used in a computer simulation of sheet metal forming process is disclosed. According to one aspect of the present invention, the finite element mesh model of the blank is initially configured as a flat plate without any weight before performing the gravity loading phase of the simulation. A user-specified initial imperfection is then applied to the initial flat plate model so that a desired bent shape occurs predictably.
摘要翻译：公开了一种在金属板成形工艺的计算机模拟中使用的用于生成用于空白金属板的有限元网格模型的初始构造的改进的系统和方法。根据本发明的一个方面，在执行模拟的重力加载阶段之前，坯料的有限元网格模型最初被配置为没有任何重量的平板。然后将用户指定的初始缺陷应用于初始平板模型，使得期望的弯曲形状可预测地发生。

2. 发明申请

US20140019099A1 Determination Of Failure In Sheet Metal Forming Simulation Using Isotropic Metal Failure Criteria 审中-公开
标题翻译：使用各向同性金属破坏准则确定钣金成形模拟中的失效
公开(公告)号：US20140019099A1
公开(公告)日：2014-01-16
申请号：US13549980
申请日：2012-07-16
申请人： Xinhai Zhu , Li Zhang
发明人： Xinhai Zhu , Li Zhang
IPC分类号： G06F17/10
CPC分类号： G06F17/5018 , G06F2217/42
摘要： Systems and methods of determining structural failure in a computer simulation of manufacturing a sheet metal part are disclosed. A FEA model defined for a sheet metal manufacturing procedure includes a plurality of shell elements representing sheet metal blank. Shell elements are configured for emulating anisotropic material properties of the sheet metal. Numerically-simulated structural behaviors are obtained by conducting a computer simulation of manufacturing the sheet metal part using the FEA model with a metal forming simulation application module. The numerically-simulated structural behaviors include structural deformations in forms of equivalent strain and plastic flow direction during forming of the sheet metal part. A structural failure determination criterion is constructed using a planar isotropic material model of the sheet metal. Finally, the obtained structural behaviors are compared with the failure determination criterion to determine whether there is a structural failure in the computer simulation of manufacturing the sheet metal part.
摘要翻译：公开了在制造钣金件的计算机模拟中确定结构故障的系统和方法。为金属板制造程序定义的FEA模型包括多个表示金属板坯的壳单元。外壳元件被配置用于模拟金属板的各向异性材料性质。通过使用具有金属成形模拟应用模块的FEA模型进行制造钣金零件的计算机模拟来获得数值模拟的结构行为。数值模拟的结构行为包括在钣金零件成型期间等效应变和塑性流动方向形式的结构变形。使用钣金的平面各向同性材料模型构造结构破坏确定标准。最后，将获得的结构行为与故障确定标准进行比较，以确定在制造钣金零件的计算机模拟中是否存在结构故障。

3. 发明申请

US20130041635A1 Methods and Systems for Designing Addendum Section of A Die in Sheet Metal Forming 审中-公开
标题翻译：钣金成型中模具附加部分的设计方法与系统
公开(公告)号：US20130041635A1
公开(公告)日：2013-02-14
申请号：US13208238
申请日：2011-08-11
申请人： Xinhai Zhu , Philip Ho , Li Zhang
发明人： Xinhai Zhu , Philip Ho , Li Zhang
IPC分类号： G06F17/50
CPC分类号： G06F17/5018 , G06F2217/42
摘要： An improved method of creating a computerized numerical model representing addendum section is disclosed. Computerized numerical model is created by placing a plurality of surface patches at disjoint locations along an enclosed trim line of the product design surface and corresponding binder opening line. Each surface patch is bounded with top and bottom edges coincided with the enclosed trim line and the binder opening line, respectively. Each surface patch is further bounded with two side edges connecting corresponding ends of the top and bottom edges. To ensure a continuously smooth transition between the product design surface and the binder surface, a number of parameters are adjusted for each surface patch to obtain a desired surface geometry. Any gap between a neighboring pair of surface patches is filled with a filler patch using a blending procedure that ensures continuous smooth transition from two neighboring side edges of the neighboring pair.
摘要翻译：公开了一种改进的创建表示附录部分的计算机数字模型的方法。通过沿着产品设计表面和相应的粘合剂开口线的封闭装饰线放置多个表面贴片而形成计算机化数值模型。每个表面贴片的顶部和底部边缘分别与封闭的修剪线和粘合剂开口线一致。每个表面贴片进一步界定了连接顶部和底部边缘的相应端部的两个侧边缘。为了确保产品设计表面和粘合剂表面之间的连续平滑过渡，为每个表面贴片调整了许多参数以获得所需的表面几何形状。相邻的一对表面贴片之间的任何间隙用填充片填充，使用混合程序，其确保从邻近对的两个相邻侧边缘的连续平滑过渡。

4. 发明申请

US20130325423A1 Trim Line Determination In A Deep Draw Manufacturing of A Sheet Metal Part 审中-公开
标题翻译：钣金零件深冲制造中的修剪线测定
公开(公告)号：US20130325423A1
公开(公告)日：2013-12-05
申请号：US13482703
申请日：2012-05-29
申请人： Xinhai Zhu , Li Zhang
发明人： Xinhai Zhu , Li Zhang
IPC分类号： G06G7/48
CPC分类号： G06F17/5018
摘要： Methods and systems of determining a trim line in deep draw manufacturing of a sheet metal part are disclosed. A computerized model of a sheet metal part and the addendum surface geometry are defined. At least one flange portion in the computerized model is identified. Perform a numerical simulation of unfolding of the flange towards the addendum surface by applying a first set of numerical loads to each pair of adjacent finite elements. The first set of numerical loads is configured for flattening out the pair of finite elements with a bending moment determined using relative orientations of the pair finite elements and material properties of the part. A second set of numerical loads is applied to close any remaining gap between the unfolded flange and the addendum thereafter. The outer edge of the flange portions in their final unfolded configuration is designated as a trim line.
摘要翻译：公开了一种在钣金零件的深冲制造中确定修剪线的方法和系统。定义了钣金件和附件表面几何形状的计算机化模型。识别计算机化模型中的至少一个凸缘部分。通过对每对相邻的有限元施加第一组数值载荷来执行法兰朝向齿顶表面展开的数值模拟。第一组数值载荷被配置为使用一对有限元素的相对取向和部件的材料特性确定的弯曲力矩平坦化一对有限元。应用第二组数值载荷来封闭展开的法兰和附件之间的剩余间隙。凸缘部分的最终展开构型的外边缘被指定为修剪线。

5. 发明申请

US20110295570A1 Sheet Metal Forming Failure Prediction Using Numerical Simulations 审中-公开
标题翻译：使用数值模拟的钣金成形失效预测
公开(公告)号：US20110295570A1
公开(公告)日：2011-12-01
申请号：US12789378
申请日：2010-05-27
申请人： Xinhai Zhu , Li Zhang
发明人： Xinhai Zhu , Li Zhang
IPC分类号： G06F17/50 , G06F17/11
CPC分类号： G06F17/5018 , G06F2217/16 , G06F2217/42
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）被转换成一个独立于路径的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，检查壳单元的每个积分点处的相对应变与相应的形成极限应变值的路径无关FLD。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被保存到文件中，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，预测出局部颈缩。

6. 发明授权

US08190408B2 Methods and systems for numerically predicting surface imperfections on stamped sheet metal parts 有权
标题翻译：用于数值预测冲压钣金零件表面缺陷的方法和系统
公开(公告)号：US08190408B2
公开(公告)日：2012-05-29
申请号：US12729099
申请日：2010-03-22
申请人： Xinhai Zhu
发明人： Xinhai Zhu
IPC分类号： G06F17/10
CPC分类号： G06F17/5018 , G06F2217/42
摘要： Methods and systems for numerically predicting surface imperfections on stamped sheet metal parts are disclosed. FEM mesh includes a plurality of shell elements and a plurality of nodes that represents a stamped sheet metal part. At least one surface of the part needs to be examined for imperfection, which can be used for adjusting the die for forming the sheet metal part. Each surface is created by fitting all of nodes of a portion of the FEM mesh in a group-to-group scheme. A group is defined to include a center element and its neighbors. Neighbor elements share a side with the center element are always included in the group. Each group includes at least three neighbors in additional to the center element. Node-sharing elements are added into the group such that the criterion of at least three neighbors is met.
摘要翻译：公开了用于数值预测冲压钣金零件表面缺陷的方法和系统。 FEM网格包括多个壳单元和表示冲压的金属片部件的多个节点。需要对零件的至少一个表面进行检查以进行不完美的检查，其可用于调整用于形成钣金件的模具。通过将FEM网格的一部分的所有节点拟合到组到组方案中来创建每个表面。一个组被定义为包括一个中心元素及其邻居。共享中心元素的邻居元素总是包含在组中。每个组除了中心元素之外还包括至少三个邻居。将节点共享元素添加到组中，使得满足至少三个邻居的标准。

7. 发明申请

US20110231163A1 METHODS AND SYSTEMS FOR NUMERICALLY PREDICTING SURFACE IMPERFECTIONS ON STAMPED SHEET METAL PARTS 有权
标题翻译：用于数字预测表面印刷金属部件的方法和系统
公开(公告)号：US20110231163A1
公开(公告)日：2011-09-22
申请号：US12729099
申请日：2010-03-22
申请人： Xinhai Zhu
发明人： Xinhai Zhu
IPC分类号： G06F17/50
CPC分类号： G06F17/5018 , G06F2217/42
摘要： Methods and systems for numerically predicting surface imperfections on stamped sheet metal parts are disclosed. FEM mesh includes a plurality of shell elements and a plurality of nodes that represents a stamped sheet metal part. At least one surface of the part needs to be examined for imperfection, which can be used for adjusting the die for forming the sheet metal part. Each surface is created by fitting all of nodes of a portion of the FEM mesh in a group-to-group scheme. A group is defined to include a center element and its neighbors. Neighbor elements share a side with the center element are always included in the group. Each group includes at least three neighbors in additional to the center element. Node-sharing elements are added into the group such that the criterion of at least three neighbors is met.
摘要翻译：公开了用于数值预测冲压钣金零件表面缺陷的方法和系统。 FEM网格包括多个壳单元和表示冲压的金属片部件的多个节点。需要对零件的至少一个表面进行检查以进行不完美的检查，其可用于调整用于形成钣金件的模具。通过将FEM网格的一部分的所有节点拟合到组到组方案中来创建每个表面。一个组被定义为包括一个中心元素及其邻居。共享中心元素的邻居元素总是包含在组中。每个组除了中心元素之外还包括至少三个邻居。将节点共享元素添加到组中，使得满足至少三个邻居的标准。

8. 发明申请

US20130325424A1 Systems and Methods Of Creating Computerized Model For A Deep Draw Manufacturing Simulation Of A Sheet Metal Part 审中-公开
标题翻译：创建计算机模型的系统和方法，用于钣金零件的深冲制造仿真
公开(公告)号：US20130325424A1
公开(公告)日：2013-12-05
申请号：US13485994
申请日：2012-06-01
申请人： Xinhai Zhu , Quanqing Yan
发明人： Xinhai Zhu , Quanqing Yan
IPC分类号： G06G7/48
CPC分类号： G06F17/5018
摘要： Systems and methods of creating a computerized model for a deep draw manufacturing simulation of a sheet metal part are disclosed. A series of computer generated visual diagrams are sequentially displayed upon receipt of a request from the user. The request is for creating a computerized model for a specific type of deep draw manufacturing simulation. The computerized model includes certain number of components for each particular type of simulations. The diagrams are configured for attracting the user's attention as to which component is being processed. Each diagram includes icons displayed in three different indicative schemes. The first indicative scheme shows components that have not been processed. The second indicative scheme shows a currently-processed component, while the third indicative scheme shows previously-processed components. The order of the series of diagrams is predetermined for each particular type of simulation hence minimizing human error in creation of the computerized model.
摘要翻译：公开了制造用于钣金零件的深冲制造模拟的计算机化模型的系统和方法。在接收到来自用户的请求后，依次显示一系列计算机生成的视觉图。该要求是为特定类型的深冲制造模拟创建一个计算机化模型。计算机化模型包括每种特定类型模拟的特定数量的组件。这些图被配置为吸引用户对正在处理哪个组件的注意。每个图包括以三种不同的指示方案显示的图标。第一个指示性方案显示未处理的组件。第二个指示性方案显示了一个当前处理的组件，而第三个指示性方案显示了先前处理的组件。为每个特定类型的模拟预定了一系列图表的顺序，从而使计算机化模型的创建中的人为错误最小化。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式