Metallic hollow columnar member
    1.
    发明授权
    Metallic hollow columnar member 有权
    金属中空柱状构件

    公开(公告)号:US08783721B2

    公开(公告)日:2014-07-22

    申请号:US14008269

    申请日:2012-03-30

    IPC分类号: B62D21/15

    CPC分类号: B62D21/15

    摘要: A metallic hollow columnar member with a polygonal cross-section having at least five vertices and sides extending between the vertices, is disclosed. The polygonal cross-section is divided by two vertices (A, B) with small inside angles into two perimeter segments with a perimeter comprising one or more sides, and at least one of the two perimeter segments contains at least four sides. The respective inside angles of at least three vertices (V(i)) included in the perimeter segment which includes the at least four sides are equal to or less than 180°, the distance (SS(i)) between each of the at least three vertices (V(i)) and a straight line (L) connecting the two vertices (A, B) is shorter than ½ of the distance between the two vertices (A, B), and the inside angle of the vertex (C) with the smallest inside angle among the at least three vertices (V(i)) is larger than the inside angles of the two vertices (A, B). Vertices (VI) are present on the perimeter segment including the at least four sides, respectively between the vertex (C) with the smallest inside angle among the at least three vertices (V(i)) and one (A) of the two vertices (A, B), and between the vertex (C) with the smallest inside angle and the other (B) of the two vertices (A, B), said vertices (VI) having inside angles larger than the inside angle of the vertex (C) with the smallest inside angle.

    摘要翻译: 公开了具有至少五个顶点和在顶点之间延伸的侧面的具有多边形横截面的金属中空柱状构件。 多边形横截面被具有小内角的两个顶点(A,B)分成两个周边段,周边包括一个或多个边,并且两个周边段中的至少一个包含至少四个边。 包括至少四个边的周边段中包括的至少三个顶点(V(i))的相应内角度等于或小于180°,至少在每一个之间的距离(SS(i)) 连接两个顶点(A,B)的三个顶点(V(i))和直线(L)短于两个顶点(A,B)之间的距离的一半,顶点的内角 )在所述至少三个顶点(V(i))中具有最小内角的大于所述两个顶点(A,B)的内角度。 顶点(VI)分别位于包括至少四个侧面的周边区段上,分别位于至少三个顶点(V(i))中的最小内角的顶点(C)和两个顶点中的一个(A)之间 (A,B),并且具有最小内角的顶点(C)和两个顶点(A,B)的顶点(C)之间,所述顶点(VI)的内角大于顶点的内角 (C)内角最小。

    METALLIC HOLLOW COLUMNAR MEMBER
    2.
    发明申请
    METALLIC HOLLOW COLUMNAR MEMBER 有权
    金属中空柱会员

    公开(公告)号:US20140021709A1

    公开(公告)日:2014-01-23

    申请号:US14008269

    申请日:2012-03-30

    IPC分类号: B62D21/15

    CPC分类号: B62D21/15

    摘要: A metallic hollow columnar member with a polygonal cross-section having at least five vertices and sides extending between the vertices, is disclosed. The polygonal cross-section is divided by two vertices (A, B) with small inside angles into two perimeter segments with a perimeter comprising one or more sides, and at least one of the two perimeter segments contains at least four sides. The respective inside angles of at least three vertices (V(i)) included in the perimeter segment which includes the at least four sides are equal to or less than 180°, the distance (SS(i)) between each of the at least three vertices (V(i)) and a straight line (L) connecting the two vertices (A, B) is shorter than ½ of the distance between the two vertices (A, B), and the inside angle of the vertex (C) with the smallest inside angle among the at least three vertices (V(i)) is larger than the inside angles of the two vertices (A, B). Vertices (VI) are present on the perimeter segment including the at least four sides, respectively between the vertex (C) with the smallest inside angle among the at least three vertices (V(i)) and one (A) of the two vertices (A, B), and between the vertex (C) with the smallest inside angle and the other (B) of the two vertices (A, B), said vertices (VI) having inside angles larger than the inside angle of the vertex (C) with the smallest inside angle.

    摘要翻译: 公开了具有至少五个顶点和在顶点之间延伸的侧面的具有多边形横截面的金属中空柱状构件。 多边形横截面被具有小内角的两个顶点(A,B)分成两个周边段,周边包括一个或多个边,并且两个周边段中的至少一个包含至少四个边。 包括至少四个边的周边段中包括的至少三个顶点(V(i))的相应内角度等于或小于180°,至少在每一个之间的距离(SS(i)) 连接两个顶点(A,B)的三个顶点(V(i))和直线(L)短于两个顶点(A,B)之间的距离的一半,顶点的内角 )在所述至少三个顶点(V(i))中具有最小内角的大于所述两个顶点(A,B)的内角度。 顶点(VI)分别位于包括至少四个侧面的周边区段上,分别位于至少三个顶点(V(i))中的最小内角的顶点(C)和两个顶点中的一个(A)之间 (A,B),并且具有最小内角的顶点(C)和两个顶点(A,B)的顶点(C)之间,所述顶点(VI)的内角大于顶点的内角 (C)内角最小。

    FRACTURE PREDICTION METHOD, PROCESSING DEVICE, PROGRAM PRODUCT AND RECORDING MEDIUM
    3.
    发明申请
    FRACTURE PREDICTION METHOD, PROCESSING DEVICE, PROGRAM PRODUCT AND RECORDING MEDIUM 有权
    断裂预测方法,处理装置,程序产品和记录介质

    公开(公告)号:US20100121621A1

    公开(公告)日:2010-05-13

    申请号:US12595418

    申请日:2008-04-14

    IPC分类号: G06F17/10 G06F19/00

    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.

    摘要翻译: 当将分析目标部分离散成多个元素并执行分析时,通过在分析之后组合两个相邻元素的方式或者改变元素的方式来比较包括相同元素的等效位置处的片材厚度减小率或最大主应变 两种类型的离散化大小进行分析,提取差异较大的元素作为断裂风险部分。 利用这种结构,当通过有限元法预测断裂时,可以可靠地提取断裂风险部分。

    PRESS FORMING METHOD AND VEHICLE COMPONENT
    8.
    发明申请
    PRESS FORMING METHOD AND VEHICLE COMPONENT 有权
    压力成型方法和车辆部件

    公开(公告)号:US20140182349A1

    公开(公告)日:2014-07-03

    申请号:US14117681

    申请日:2012-05-16

    IPC分类号: B21D22/26

    摘要: Disclosed is a press forming method press forming a workpiece between a die and a punch, while pushing the punch into the die by means of a relative motion of the die and the punch, the method includes: producing an intermediate molding (100B) having ridges (100d) formed in predetermined parts of the workpiece, and then press forming the intermediate molding (100B) into a final shape, to thereby substantially thicken and work-harden the predetermined parts of the workpiece.

    摘要翻译: 公开了一种压模成形方法,其通过模具和冲头的相对运动将冲头压入模具中,同时在模具和冲头之间形成工件,该方法包括:制造具有脊部的中间模制件(100B) (100d)形成在工件的预定部分中,然后将中间成型体(100B)压制成最终形状,从而基本上增厚并加工工件的预定部分。

    Fracture determination method, fracture determination apparatus, program, and computer readable recording medium
    9.
    发明授权
    Fracture determination method, fracture determination apparatus, program, and computer readable recording medium 有权
    断裂测定方法,断裂确定装置,程序和计算机可读记录介质

    公开(公告)号:US08606532B2

    公开(公告)日:2013-12-10

    申请号:US13634341

    申请日:2011-04-06

    IPC分类号: G06F19/00 G01L1/00

    摘要: A fracture determination method for determining a fracture of a metal structure includes, when a fracture determination target portion has returned from a plastic state to an elastic state, given that a stress when the portion returned to the elastic state is (x, y)=(σ2, σ1) (maximum principal stress: σ1, minimum principal stress: σ2) on a (x, y) coordinate plane, performing fracture determination of the fracture determination target portion using a re-yield stress R determined by the intersection between a straight line satisfying a relation y=(σ1/σ2)x and an yield curve obtained from the plastic state of the fracture determination target portion. Fracture determination can be performed with high accuracy even when the fracture determination target portion has returned from a plastic state to an elastic state.

    摘要翻译: 用于确定金属结构的断裂的断裂确定方法包括:当断裂确定目标部分从塑性状态返回到弹性状态时,假定当返回到弹性状态的部分的应力为(x,y)= (x,y)坐标平面上的(σigma2,sigma1)(最大主应力:σ1,最小主应力:sigma2),使用通过a的交点确定的再屈服应力R来进行断裂确定目标部分的断裂确定 满足关系y =(sigma1 / sigma2)x的直线和从断裂确定目标部分的塑性状态获得的屈服曲线。 即使当断裂确定目标部分从塑性状态返回到弹性状态时,也可以高精度地进行断裂确定。

    FRACTURE PREDICTION METHOD, DEVICE, A PROGRAM ARRANGEMENT AND COMPUTER-ACCESSIBLE MEDIUM THEREFOR
    10.
    发明申请
    FRACTURE PREDICTION METHOD, DEVICE, A PROGRAM ARRANGEMENT AND COMPUTER-ACCESSIBLE MEDIUM THEREFOR 有权
    碎片预测方法,设备,程序安排和计算机可访问的介质

    公开(公告)号:US20090177417A1

    公开(公告)日:2009-07-09

    申请号:US12278117

    申请日:2007-02-01

    IPC分类号: G01N3/08

    摘要: According to exemplary embodiments of the present invention, using a fracture limit stress line obtained by converting a hole expansion ratio into a stress as a criterion for a fracture, the risk of fracture in a material can be evaluated quantitatively by comparing the relationship between data obtained from a numerical analysis using a finite element method and the fracture limit stress line. Thus, when determining a fracture limit in a stretch flange portion in a thin plate in a process including one or more deformation path variations, it is possible to obtain the fracture limit curve easily and efficiently and predict the fracture with high accuracy, and the risk of fracture upon press forming or crash can be evaluated.

    摘要翻译: 根据本发明的示例性实施例,使用通过将孔膨胀率转换为应力而获得的断裂极限应力线作为断裂的标准,可以通过比较获得的数据之间的关系来定量评价材料中的断裂风险 从使用有限元法的数值分析和断裂极限应力线。 因此,当在包括一个或多个变形路径变化的过程中确定薄板中的拉伸凸缘部分的断裂极限时,可以容易且有效地获得断裂极限曲线并且高精度地预测断裂,并且风险 可以评估压制成型或碰撞时的断裂。