taptap下载安装安卓学报 ›› 2025, Vol. 43 ›› Issue (4): 29-35.

• 未来机场及智能装备 • 上一篇    下一篇

T 型件激光熔覆的数值模拟

  

  1. 1. taptap下载安装安卓航空工程学院, 天津 300300; 2. 中国商飞民用飞机试飞中心, 上海 200232;
    3. 北京飞机维修工程有限公司, 北京
    100621
  • 收稿日期:2024-07-18 修回日期:2024-11-24 出版日期:2025-09-22 发布日期:2025-09-22
  • 作者简介:张莹(1983— ),女,山东泰安人,副教授,博士,研究方向为航空发动机故障诊断、发动机健康管理、双稳随机共振
  • 基金资助:
    国家自然科学基金面上项目(52172360)

Numerical simulation of laser cladding of T-shaped components

  1. 1. College of Aeronautical Engineering, CAUC, Tianjin 300300, China ;
    2. Civil Aircraft Test Flight Centre, COMAC, Shanghai 200232, China; 3. AMECO, Beijing 100621, China 
  • Received:2024-07-18 Revised:2024-11-24 Online:2025-09-22 Published:2025-09-22

摘要:

为了探究使 T 型件残余应力和变形最小的激光熔覆工艺,本文设计了不同的工艺参数并计算得到了不同工
艺参数下的温度场、残余应力场和变形场结果,发现约束方式影响构件的残余应力与变形位移的峰值大小
和分布,而不同熔覆路径和速度主要影响残余应力与变形位移的峰值大小。 自由放置约束方式的残余应力
和变形位移峰值比四角固定和两边固定分别小 89.4% 和 71.1% 、66.3% 和 61.6% ,往复式熔覆路径的残余应
力和变形位移峰值比单向依次路径减小 26.9%和 6.8%,熔覆速度为 10mm/s 时的残余应力和变形位移峰值
分别比熔覆速度 2.5、5.0 mm/s 时减小 11.0% 和 4.9% 、35.5% 和 34.8%。 根据减小残余应力和变形的指
标分析得到,最优熔覆工艺为采用自由放置约束、往复式熔覆路径和较大的熔覆速度工艺。

关键词:

Abstract:

In order to explore the laser cladding process to minimize the residual stress and deformation of T-shaped components, different process parameters were designed and the results of temperature field, residual stress field and deformation field were calculated under different process parameters in this paper. It was found that the constraint
mode affects the peak value and distribution of residual stress and deformation displacement of components, while
different cladding paths and speeds mainly affect the peak value of residual stress and deformation displacement.
The peak values of residual stress and deformation displacement under free placement constraint mode are 89.4%
and 71.1%, 66.3% and 61.6% lower than those under restraint mode of four-corner fixation and two-side fixation,
respectively. The peak values of residual stress and deformation displacement in reciprocating cladding path process are 26.9% and 6.8% lower than those in unidirectional sequential path process, and the peak values of residual
stress and deformation displacement in cladding speed of 10 mm/s are 11.0% and 4.9%, 35.5% and 34.8% lower
than those in cladding speed of 2.5 mm/s and 5.0 mm/s, respectively. According to the index analysis of reducing
residual stress and deformation, the optimal cladding process is to adopt the process of free placement constraint,
reciprocating cladding path and a higher cladding speed.

Key words:

中图分类号: 

Baidu
map