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涡轮盘榫槽激光冲击强化数值模拟与试验验证

肖值兴 毛建兴 田腾跃 汪文君 胡殿印 王荣桥

肖值兴, 毛建兴, 田腾跃, 等. 涡轮盘榫槽激光冲击强化数值模拟与试验验证[J]. 航空动力学报, 2022, 37(11):2448-2454 doi: 10.13224/j.cnki.jasp.20220324
引用本文: 肖值兴, 毛建兴, 田腾跃, 等. 涡轮盘榫槽激光冲击强化数值模拟与试验验证[J]. 航空动力学报, 2022, 37(11):2448-2454 doi: 10.13224/j.cnki.jasp.20220324
XIAO Zhixing, MAO Jianxing, TIAN Tengyue, et al. Numerical simulation and experimental verification on laser shock peening for turbine mortise[J]. Journal of Aerospace Power, 2022, 37(11):2448-2454 doi: 10.13224/j.cnki.jasp.20220324
Citation: XIAO Zhixing, MAO Jianxing, TIAN Tengyue, et al. Numerical simulation and experimental verification on laser shock peening for turbine mortise[J]. Journal of Aerospace Power, 2022, 37(11):2448-2454 doi: 10.13224/j.cnki.jasp.20220324

涡轮盘榫槽激光冲击强化数值模拟与试验验证

doi: 10.13224/j.cnki.jasp.20220324
基金项目: 国家自然科学基金(51875020, 52022007); 国家科技重大专项(J2019-Ⅳ-0009-0077)
详细信息
    作者简介:

    肖值兴(1997-),男,硕士生,主要从事金属疲劳及表面强化研究

    通讯作者:

    胡殿印(1980-),女,教授、博士生导师,博士,主要从事航空发动机结构强度与可靠性研究。E-mail:hdy@buaa.edu.cn

  • 中图分类号: V261.8

Numerical simulation and experimental verification on laser shock peening for turbine mortise

  • 摘要:

    提出了基于离散化思想的曲面结构激光冲击强化数值模拟方法,通过空间几何关系和能量守恒原理实现受冲击区域、压力的精准定义,可实现任意曲面、任意角度的激光冲击强化数值模拟,并依据网格无关性要求确定了靶材网格尺寸。利用该方法,探究了激光冲击强化后涡轮盘榫槽结构特征部位的残余应力分布规律,与试验结果相比预测误差在20%以内。研究表明:激光冲击强化后涡轮盘榫槽部位引入一定深度范围内的残余压应力,但因曲面结构特征导致的工艺可达性影响,残余应力数值低于相同工艺水平下的平面结构,且在不同方向上存在差异性。

     

  • 图 1  榫槽激光冲击强化示意图

    Figure 1.  Schematic diagram of mortise laser shock peening

    图 2  激光冲击压力时间曲线

    Figure 2.  Laser shock pressure time curve

    图 3  激光冲击区域判断

    Figure 3.  Laser shock area judgment

    图 4  激光冲击强化模型

    Figure 4.  Laser shock peening model

    图 5  不同网格尺寸下的残余应力

    Figure 5.  Residual stress under different grid sizes

    图 6  曲面激光冲击强化网格收敛曲线

    Figure 6.  Mesh convergence curve of laser shock peening on curved surface

    图 7  半榫槽有限元模型及网格划分

    Figure 7.  Finite element model and mesh generation of half mortise

    图 8  榫槽激光冲击强化残余应力场

    Figure 8.  Mortise laser shock peening residual stress field

    图 9  榫槽激光冲击强化模拟及试验结果

    Figure 9.  Simulation and experimental results of mortise laser shock peening

    表  1  GH4720Li材料参数[17]

    Table  1.   Material parameters of GH4720Li[17]

    E/GPavA/MPaB/MPaCn
    2190.3111421 9470.0260.882
    下载: 导出CSV

    表  2  不同结构表面残余应力

    Table  2.   Surface residual stress of different structures

    $\varphi$残余应力/MPa
    平面上齿面下齿面
    −678.51−668.89−413.42
    90°−677.93−633.42−338.03
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-05-10
  • 网络出版日期:  2022-09-30

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