陈明和,吴心晨,谢兰生,王宁,苏楠.复杂结构的钛合金宽弦空心风扇叶片的双层制造工艺及其毛坯优化设计[J].稀有金属材料与工程,2019,48(6):1717~1724.[Minghe Chen,Xinchen Wu,Lanshen Xie,Ning Wang,Nan Su.A two-layer process and the optimal blank design for the hollow titanium wide-chord fan blade with complex geometries[J].Rare Metal Materials and Engineering,2019,48(6):1717~1724.]
复杂结构的钛合金宽弦空心风扇叶片的双层制造工艺及其毛坯优化设计
投稿时间:2018-01-06  修订日期:2018-03-01
中文关键词:  宽弦空心叶片  毛坯优化设计  扩散连接  有限元仿真  钛合金
基金项目:江苏省科技支撑项目(BE2013123)
中文摘要:
      钛合金宽弦空心风扇叶片是航空发动机的重要部件,具有复杂的结构特点,内部交替排列着减重空腔与加强筋,采用基于复杂超塑性成形的传统多层工艺成形难度大。针对以上问题,本文提出一种基于热成形和扩散连接技术的新双层制造工艺,并且规划了一条毛坯优化设计的基本技术途径,更可靠可控的构建了内部加强筋。借用ABAQUS软件数值模拟成形,分析成形结果的厚度均匀性、结构完整性和表面缺陷,以评估方法的实用性。以Ti-6Al-4V为成形材料,采用经尺寸优化后的最佳坯料,进行了一系列的实验来验证仿真结果。实验成功制造出无缺陷的缩比版钛合金宽弦空心风扇叶片,同时实验与仿真模拟结果非常吻合。
A two-layer process and the optimal blank design for the hollow titanium wide-chord fan blade with complex geometries
英文关键词:Hollow wide-chord fan blade  Optimal blank design  Diffusion bonding  Finite element simulation  Titanium alloy
英文摘要:
      This paper concentrates on the forming of a hollow wide-chord titanium fan blade with complex geometries by a more efficient and simple way. A new two-layer process based on hot forming and diffusion bonding is developed. An essential approach for optimal blank design is proposed. The presented process employed a more reliable and controllable method to construct the internal ribbons, instead of the complicated superplastic forming in contemporary multi-layer approaches. To evaluate the practicability, the numerical method is used to investigate the thickness uniformity, structural integrity and skin defects of forming results by ABAQUS. A series of experiments were conducted to validate the simulation results. The Ti-6Al-4V alloy was adopted as the forming material, and blanks optimal designed by the proposed approach were used. The scaled-down version of the hollow wide-chord fan blade was successfully formed without defects. In addition, it is observed that the experimentation and simulation agree well.
作者单位E-mail
陈明和 南京航空航天大学 机电学院 meemhchen@nuaa.edu.cn 
吴心晨 南京航空航天大学 机电学院  
谢兰生 南京航空航天大学 机电学院  
王宁 南京航空航天大学 机电学院  
苏楠 南京航空航天大学 机电学院 mee.sunan@nuaa.edu.cn 
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