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公开(公告)号：US11168718B2
公开(公告)日：2021-11-09
申请号：US15479453
申请日：2017-04-05
摘要： The present invention is directed to three dimensional (3D) woven lattices for drag and turbulence reduction. 3D woven lattice material can serve as a surface layer that regularizes the flow around a bluff body with beneficial effects on: 1) drag reduction, 2) decrease in turbulence intensity, 3) attenuation of flow-induced vibrations, and 4) aerodynamic noise cancellation. 3-D woven lattice architectures allows for passive flow control (without the need for external energy supply) around bluff bodies with restricted geometry/shape due to their functional requirements such as wind turbine towers, cargo trucks, train cars, etc. The woven material can be easily shaped to fit on various geometries and incorporated in existing manufacturing processes (from composites to metallic plates). Metallic foam and randomly porous materials have been identified in the literature as a promising solution for passive flow control over bluff bodies.
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公开(公告)号：US20170023084A1
公开(公告)日：2017-01-26
申请号：US15088979
申请日：2016-04-01
CPC分类号： F16F7/00 , D03D25/005 , D10B2101/08 , D10B2101/20 , F16F1/37 , F16F7/08 , F16F7/1028 , F16F2222/02 , F16F2224/02 , F16F2224/0208 , F16F2224/0275 , F16F2224/0291 , F16F2226/04 , F16F2234/06
摘要： The present invention is directed to three dimensional weaves composed of wires or yarns that offer the potential for damping not achievable with solid materials, including high temperature damping. Three damping mechanisms have been identified: (1) Internal material damping, (2) Frictional energy dissipation (Coulomb damping), and (3) inertial damping (tuned mass damping). These three damping mechanisms can be optimized by modifying the wire material chemistries (metals, ceramics, polymers, etc.), wire sizes, wire shapes, wire coatings, wire bonding, and wire architecture (by removing certain wires). These have the effect of modifying the lattice and wire stiffnesses, masses, coefficients of friction, and internal material damping. Different materials can be used at different locations in the woven lattice. These design variables can also be modified to tailor mechanical stiffness and strength of the lattice, in addition to damping.
摘要翻译： 本发明涉及由电线或纱线组成的三维织物，其提供了不能用固体材料实现的阻尼的可能性，包括高温阻尼。 已经确定了三种阻尼机制：（1）内部材料阻尼，（2）摩擦耗能（库仑阻尼）和（3）惯性阻尼（调谐质量阻尼）。 可以通过改变线材化学（金属，陶瓷，聚合物等），线尺寸，线形，线涂，引线接合和线结构（通过去除某些线）来优化这三个阻尼机制。 这些具有改变晶格和线的刚度，质量，摩擦系数和内部材料阻尼的作用。 不同的材料可用于编织格子中的不同位置。 除了阻尼之外，这些设计变量也可以被修改以适应格子的机械刚度和强度。
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公开(公告)号：US10253836B2
公开(公告)日：2019-04-09
申请号：US15088979
申请日：2016-04-01
摘要： The present invention is directed to three dimensional weaves composed of wires or yarns that offer the potential for damping not achievable with solid materials, including high temperature damping. Three damping mechanisms have been identified: (1) Internal material damping, (2) Frictional energy dissipation (Coulomb damping), and (3) inertial damping (tuned mass damping). These three damping mechanisms can be optimized by modifying the wire material chemistries (metals, ceramics, polymers, etc.), wire sizes, wire shapes, wire coatings, wire bonding, and wire architecture (by removing certain wires). These have the effect of modifying the lattice and wire stiffnesses, masses, coefficients of friction, and internal material damping. Different materials can be used at different locations in the woven lattice. These design variables can also be modified to tailor mechanical stiffness and strength of the lattice, in addition to damping.
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公开(公告)号：US20170356478A1
公开(公告)日：2017-12-14
申请号：US15479453
申请日：2017-04-05
CPC分类号： F15D1/12 , B62D35/001 , B64C21/10 , E01D19/00 , E04F13/002 , E04H12/00 , F01D5/147 , F03D1/0675 , F05B2240/30 , F05D2240/30 , F05D2250/60 , Y02E10/721 , Y02P70/523
摘要： The present invention is directed to three dimensional (3D) woven lattices for drag and turbulence reduction. 3D woven lattice material can serve as a surface layer that regularizes the flow around a bluff body with beneficial effects on: 1) drag reduction, 2) decrease in turbulence intensity, 3) attenuation of flow-induced vibrations, and 4) aerodynamic noise cancellation. 3-D woven lattice architectures allows for passive flow control (without the need for external energy supply) around bluff bodies with restricted geometry/shape due to their functional requirements such as wind turbine towers, cargo trucks, train cars, etc. The woven material can be easily shaped to fit on various geometries and incorporated in existing manufacturing processes (from composites to metallic plates). Metallic foam and randomly porous materials have been identified in the literature as a promising solution for passive flow control over bluff bodies.
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5.发明申请公开(公告)号：US20170023310A1
公开(公告)日：2017-01-26
申请号：US15161456
申请日：2016-05-23
发明人： Kevin J. Hemker , James K. Guest , Timothy P. Weihs , Stephen M. Ryan , Longyu Zhao , Seunghyun Ha , Yong Zhang , Stefan Szyniszewski , Sergey Kuznetsov
CPC分类号： F28F3/022 , F28F13/003 , F28F13/06 , F28F21/02 , F28F21/04 , F28F21/067 , F28F21/085 , F28F2245/00 , H01L23/3733 , H01L23/3736
摘要： The present invention is directed to devices formed from three-dimensional (3D) structures composed of metallic, ceramic or polymeric wires or bundles and yarns of wires that are either solid or hollow like a tube. The devices of the present invention offer the potential for 3D structures with multiple properties optimized concurrently, in some cases using a topology optimization routine that includes the 3D manufacturing constraints. The properties can be optimized in different directions. The 3D structures of the present invention include multiple properties that are optimized for a range of different applications, including heat transfer. The present invention also includes the methods for optimization of the 3D structures as well as methods of use of the 3D structures in heat transfer applications.
摘要翻译： 本发明涉及由金属，陶瓷或聚合物线或束组成的三维（3D）结构形成的装置以及像管子一样是固体或中空的电线丝。 本发明的装置提供具有同时优化的多个特性的3D结构的潜力，在某些情况下使用包括3D制造约束的拓扑优化例程。 这些属性可以在不同的方向进行优化。 本发明的3D结构包括针对一系列不同应用（包括热传递）而优化的多个性质。 本发明还包括用于优化3D结构的方法以及在热传递应用中使用3D结构的方法。
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