Components resistant to traveling wave vibration and methods for manufacturing the same

    公开(公告)号:US09683447B2

    公开(公告)日:2017-06-20

    申请号:US14250681

    申请日:2014-04-11

    Abstract: Components resistant to traveling wave vibration and methods for manufacturing the same are provided. The component comprises a component body and a plurality of features disposed thereabout according to an asymmetry pattern that separates a pair of repeated eigenvalues associated with a targeted mode that deflects in excess of a threshold deflection limit in response to traveling wave excitation. The method comprises identifying, in a model of a rotationally periodic component, one or more modes thereof that deflect in excess of a threshold deflection limit in response to a traveling wave excitation. Each of the modes has a pair of repeated eigenvalues associated therewith. An asymmetry pattern is determined that separates each pair of repeated eigenvalues by a desired frequency split. A plurality of features are formed and disposed according to the asymmetry pattern about the component body defining an asymmetrical component comprising the component resistant to traveling wave vibration.

    ENGINE AIRFOILS AND METHODS FOR REDUCING AIRFOIL FLUTTER
    3.
    发明申请
    ENGINE AIRFOILS AND METHODS FOR REDUCING AIRFOIL FLUTTER 有权
    发动机空气和减少空气涡轮的方法

    公开(公告)号:US20160138402A1

    公开(公告)日:2016-05-19

    申请号:US14546186

    申请日:2014-11-18

    Inventor: Jeff Lentz

    Abstract: A method is provided for designing an airfoil. The method includes considering a baseline airfoil having a first camber distribution and a first aerodynamic efficiency; reducing the first camber distribution to result in a reduced camber airfoil with a second camber distribution and a second aerodynamic efficiency such that the second aerodynamic efficiency is approximately equal to the first aerodynamic efficiency; and producing the airfoil with the second camber distribution

    Abstract translation: 提供了一种用于设计翼型的方法。 该方法包括考虑具有第一弧形分布和第一空气动力学效率的基准叶片; 减少第一弯度分布以产生具有第二弧形分布的减小的弧形翼型件和第二空气动力学效率,使得第二空气动力学效率近似等于第一空气动力学效率; 并且制造具有第二弯度分布的翼型件

    COMPONENTS RESISTANT TO TRAVELING WAVE VIBRATION AND METHODS FOR MANUFACTURING THE SAME
    4.
    发明申请
    COMPONENTS RESISTANT TO TRAVELING WAVE VIBRATION AND METHODS FOR MANUFACTURING THE SAME 有权
    抵抗行波振动的组件及其制造方法

    公开(公告)号:US20150292337A1

    公开(公告)日:2015-10-15

    申请号:US14250681

    申请日:2014-04-11

    Abstract: Components resistant to traveling wave vibration and methods for manufacturing the same are provided. The component comprises a component body and a plurality of features disposed thereabout according to an asymmetry pattern that separates a pair of repeated eigenvalues associated with a targeted mode that deflects in excess of a threshold deflection limit in response to traveling wave excitation. The method comprises identifying, in a model of a rotationally periodic component, one or more modes thereof that deflect in excess of a threshold deflection limit in response to a traveling wave excitation. Each of the modes has a pair of repeated eigenvalues associated therewith. An asymmetry pattern is determined that separates each pair of repeated eigenvalues by a desired frequency split. A plurality of features are formed and disposed according to the asymmetry pattern about the component body defining an asymmetrical component comprising the component resistant to traveling wave vibration.

    Abstract translation: 提供了耐行波振动的部件及其制造方法。 该组件包括组件主体和根据不对称模式设置在其周围的多个特征,所述不对称模式分离与响应于行波激励而偏转超过阈值偏转极限的目标模式相关联的一对重复特征值。 该方法包括在旋转周期分量的模型中识别响应于行波激发而偏转超过阈值偏转极限的一个或多个模式。 每个模式具有与之相关的一对重复特征值。 确定将每对重复特征值分开所需频率分割的不对称模式。 根据关于组件主体的不对称图案形成和布置多个特征,所述组件主体限定了包括抵抗行波振动的部件的非对称部件。

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