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    Local energy absorber
    101.
    发明授权
    Local energy absorber 有权

    公开(公告)号：US10696332B2

    公开(公告)日：2020-06-30

    申请号：US16036051

    申请日：2018-07-16

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Nilesh D. Mankame ,  Hanif Muhammad ,  Louis G. Hector, Jr. ,  Anil K. Sachdev

    IPC: B60J7/00 ,  B62D25/12 ,  B62D25/10 ,  F16F7/12 ,  B60R21/34 ,  B60R19/02 ,  B60R19/03 ,  B60R19/18

    Abstract: A vehicle hood covering an underhood object includes an inner surface of the vehicle hood facing the underhood object and spaced from the underhood object, and an outer surface of the vehicle hood opposite the inner surface. A local energy absorber is operatively attached to the inner surface of the vehicle hood. The local energy absorber is a multiply-connected structure. The local energy absorber includes a wall defining an interior surface having symmetry about a central plane normal to the inner surface of the vehicle hood. A plurality of apertures is defined in the wall symmetrically about the central plane to initiate buckling and fracture in the wall during an impact applied to the outer surface defining an impact event having a duration of less than 20 milliseconds.

    External heat assisted welding of dissimilar metal workpieces
    103.
    发明授权
    External heat assisted welding of dissimilar metal workpieces 有权

    公开(公告)号：US10421148B2

    公开(公告)日：2019-09-24

    申请号：US15137778

    申请日：2016-04-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： David R. Sigler ,  David S. Yang ,  Anil K. Sachdev

    IPC: B23K11/20 ,  B23K11/11 ,  B23K103/20

    Abstract: A method of resistance spot welding a workpiece stack-up that includes an aluminum workpiece and an adjacent overlapping steel workpiece is disclosed. The method uses a first welding electrode positioned proximate the aluminum workpiece and a second welding electrode positioned proximate the steel workpiece to effectuate the spot welding process. In an effort to positively affect the strength of the ultimately-formed weld joint, external heat may be supplied to the first welding electrode by an external heating source disposed in heat transfer relation with the first welding electrode either before or after, or both before or after, an electrical current is passed between the first and second welding electrodes to create a molten aluminum weld pool within the aluminum workpiece.

    Rapidly solidified high-temperature aluminum iron silicon alloys
    104.
    发明授权
    Rapidly solidified high-temperature aluminum iron silicon alloys 有权

    公开(公告)号：US10294552B2

    公开(公告)日：2019-05-21

    申请号：US15384889

    申请日：2016-12-20

    Applicant: GM Global Technology Operations LLC

    Inventor： Zhongyi Liu ,  Anil K. Sachdev

    IPC: C22C45/08 ,  C22C1/00

    Abstract: Methods of making high-strength, lightweight alloy components capable of high temperature performance comprising aluminum, silicon, and iron and/or nickel are provided. A high-energy stream, such as a laser or electron beam, may be selectively directed towards a precursor material to melt a portion of the precursor material in a localized region. The molten precursor material is cooled at a rate of greater than or equal to about 1.0×105 K/second to form a solid high-strength, lightweight alloy component comprising a stable ternary cubic phase having high heat resistance and high strength. The stable ternary phase may be AlxFeySiz, where x ranges from about 4 to about 5 or about 7.2 to about 7.6, y is about 1.5 to about 2.2, and z is about 1. The stable ternary phase may also be Al6Ni3Si. Materials and components, such as automotive components, made from such methods are also provided.

    EXTERNAL HEAT ASSISTED WELDING OF DISSIMILAR METAL WORKPIECES
    107.
    发明申请
    EXTERNAL HEAT ASSISTED WELDING OF DISSIMILAR METAL WORKPIECES 有权

    公开(公告)号：US20170304925A1

    公开(公告)日：2017-10-26

    申请号：US15137778

    申请日：2016-04-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： David R. Sigler ,  David S. Yang ,  Anil K. Sachdev

    IPC: B23K11/20 ,  B23K11/11

    Abstract: A method of resistance spot welding a workpiece stack-up that includes an aluminum workpiece and an adjacent overlapping steel workpiece is disclosed. The method uses a first welding electrode positioned proximate the aluminum workpiece and a second welding electrode positioned proximate the steel workpiece to effectuate the spot welding process. In an effort to positively affect the strength of the ultimately-formed weld joint, external heat may be supplied to the first welding electrode by an external heating source disposed in heat transfer relation with the first welding electrode either before or after, or both before or after, an electrical current is passed between the first and second welding electrodes to create a molten aluminum weld pool within the aluminum workpiece.

    LOCAL ENERGY ABSORBER
    109.
    发明申请
    LOCAL ENERGY ABSORBER 有权
    本地能源吸收器

    公开(公告)号：US20160280280A1

    公开(公告)日：2016-09-29

    申请号：US15173149

    申请日：2016-06-03

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Nilesh D. Mankame ,  Hanif Muhammad ,  Louis G. Hector, JR. ,  Anil K. Sachdev

    IPC: B62D25/12 ,  B62D25/10

    CPC classification number: B62D25/12 ,  B60R19/023 ,  B60R19/03 ,  B60R19/18 ,  B60R21/34 ,  B60R2019/182 ,  B60R2021/343 ,  B62D25/105 ,  F16F7/12

    Abstract: A vehicle hood covering an underhood object includes an inner surface of the vehicle hood facing the underhood object and spaced from the underhood object, and an outer surface of the vehicle hood opposite the inner surface. A local energy absorber is operatively attached to the inner surface of the vehicle hood. The local energy absorber is a multiply-connected structure. The local energy absorber includes a wall defining an interior surface having symmetry about a central plane normal to the inner surface of the vehicle hood. A plurality of apertures is defined in the wall symmetrically about the central plane to initiate buckling and fracture in the wall during an impact applied to the outer surface defining an impact event having a duration of less than 20 milliseconds.

    Abstract translation: 覆盖下层物体的车罩包括面向底座物体的车辆罩的内表面并与底座物体间隔开，车辆罩的外表面与内表面相对。 局部能量吸收器可操作地附接到车辆罩的内表面。 当地的能量吸收器是一个多重连接的结构。 局部能量吸收器包括限定内部表面的壁，所述内表面具有围绕与车辆罩的内表面垂直的中心平面对称的内表面。 围绕中心平面对称地在壁中限定多个孔，以在施加到外表面的冲击期间在壁中起始弯曲和断裂，限定持续时间小于20毫秒的冲击事件。

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