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水导激光多层级对称耦合装置设计及其射流稳定性分析 被引量:1
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作者 周嘉禾 吴胜奇 +3 位作者 钟胜波 李芝春 黄诺帝 朱利民 《激光技术》 北大核心 2025年第3期317-322,共6页
光水耦合是水导激光加工中的关键环节,对加工效率和加工质量都有着至关重要的影响。为了进一步节省耦合装置的加工成本,实现低入口压力下腔内水压的均匀分布和射流的稳定,提高耦合装置性能和水导激光加工质量,设计了一种具有多层级对称... 光水耦合是水导激光加工中的关键环节,对加工效率和加工质量都有着至关重要的影响。为了进一步节省耦合装置的加工成本,实现低入口压力下腔内水压的均匀分布和射流的稳定,提高耦合装置性能和水导激光加工质量,设计了一种具有多层级对称流道的光水耦合装置结构。对耦合装置的流场分布进行了数值模拟仿真,分析了耦合腔内部的速度矢量、流线分布以及喷嘴口出射液流的形态。结果表明,光水耦合装置内各截面流场速度矢量分布均匀,无局部波动存在,射流在喷嘴出口处的速率可达40 m/s,出射后的稳定长度可达120 mm;在入流压力1.0 MPa、喷嘴孔直径250μm的条件下,喷嘴孔处出射液流平衡稳定无波动,实际稳定长度约为85 mm。该光水耦合装置结构合理可靠,能够满足水导激光加工系统的设计和使用要求。 展开更多
关键词 激光技术 水导激光 耦合装置 结构设计 计算流体力学仿真
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Orthogonal design of experiment and analysis of abrasive water jet cutting on carbon fiber reinforced composites
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作者 HE Binjie DAI Jinchun +3 位作者 ZHAO Deng huang nuodi WU Shijing HAN Caihong 《排灌机械工程学报》 EI CSCD 北大核心 2020年第9期928-932,共5页
The carbon fiber reinforced composite is a new type of composite material with an excellent property in strength and elastic modulus,and has found extensive applications in aerospace,energy,automotive industry and so ... The carbon fiber reinforced composite is a new type of composite material with an excellent property in strength and elastic modulus,and has found extensive applications in aerospace,energy,automotive industry and so on.However,this composite has a strict requirement on processing techniques,for example,brittle damage or delamination often exists in conventional processing techniques.Abrasive water jet machining technology is a new type of green machining technique with distinct advantages such as high-energy and thermal distortion free.The use of abrasive water jet technique to process carbon fiber composite materials has become a popular trend since it can significantly improve the processing accuracy and surface quality of carbon fiber composite materials.However,there are too many parameters that affect the quality of an abrasive water jet machining.At present,few studies are carried out on the parameter optimization of such a machining process,which leads to the unstable quality of surface processing.In this paper,orthogonal design of experiment and regression analysis were employed to establish the empirical model between cutting surface roughness and machining process parameters.Then a verified model was used to optimize the machining process parameters for abrasive water jet cutting carbon fiber reinforced composites. 展开更多
关键词 abrasive water jet carbon fiber reinforced composites surface roughness orthogonal experiment regression analysis
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