超声振动对于激光烧蚀铝表面温度场仿真分析

王岩; 殷杰; 董颖怀; 李跃华; 程子政; 赵静楠; 杨硕

doi:10.11884/HPLPB202133.210160

超声振动对于激光烧蚀铝表面温度场仿真分析

doi: 10.11884/HPLPB202133.210160

王岩^{1, 2,},
殷杰¹,
董颖怀^{1, 2, ,},
李跃华³,
程子政¹,
赵静楠^{1, 2},
杨硕^{1, 2}

1.
天津科技大学机械工程学院，天津 300222
2.
天津市轻工与食品工程机械装备集成设计与在线监控重点实验室，天津 300222
3.
天津航天机电设备研究所，天津 300301

基金项目: 天津市自然科学基金项目（18JCQNJC05200）；天津市教委科研计划项目（2018KJ116）；天津市自然科学基金青年项目（18JCQNJC75300）

详细信息

作者简介:
王　岩，satansdestiny@163.com

通讯作者:
董颖怀，dongyh@tust.edu.cn

中图分类号: O53
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- 文章访问数: 828
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- PDF下载量: 40
- 被引次数: 0
出版历程
- 收稿日期: 2021-04-25
- 修回日期: 2021-08-26
- 网络出版日期: 2021-09-24
- 刊出日期: 2021-09-15

Simulation analysis of ultrasonic vibration for laser ablation of aluminum surface temperature field

Wang Yan^{1, 2
,},
Yin Jie¹,
Dong Yinghuai^{1, 2
, ,},
Li Yuehua³,
Cheng Zizheng¹,
Zhao Jingnan^{1, 2},
Yang Shuo^{1, 2}

1.
School of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin 300222, China
2.
Tianjin Key Laboratory of Integrated Design and On-line Monitoring for Light Industry & Food Machinery and Equipment, Tianjin 300222, China
3.
Tianjin Institute of Aerospace Mechanical and Electrical Equipment, Tianjin 300301, China

摘要

摘要: 针对超声振动对于激光烧蚀铝表面温度场的影响，建立了三维数值模型，利用ANSYS软件对超声振动辅助激光烧蚀金属铝的温度场进行了数值模拟。通过对比不同激光扫描速度、超声振动频率下激光相邻两个光斑温度场随时间的变化，发现相邻光斑的温度、尺寸以及位置均发生改变。数值研究表明，随着激光扫描速度的增加，激光扫描到相同位置的最大温度降低，而且凹坑的深度逐渐变浅；由于超声振动引起的介质分子位移，当超声振动频率为15 kHz时，凹坑温度发生了明显的下降且凹坑位置在振动方向发生了错位，这有利于产生新的激光作用轨迹。
- 激光烧蚀 /
- ANSYS /
- 超声振动 /
- 温度场 /
- 有限元仿真
Abstract: In view of the influence of ultrasonic vibration on the temperature field of laser ablation of aluminum surface, a three-dimensional numerical model was established, and the temperature field of ultrasonic vibration assisted laser ablation of metal aluminum was numerically simulated by using ANSYS software. By comparing the change of temperature field of two adjacent spots with time under different laser scanning speed and ultrasonic vibration frequency, it is found that the temperature, size and position of adjacent spots all change. The numerical results show that with the increase of laser scanning speed, the maximum temperature of laser scanning to the same position decreases, and the depth of craters becomes shallow. Due to the displacement of medium molecules caused by ultrasonic vibration, when the ultrasonic vibration frequency is 15 kHz, the temperature of the crater decreases significantly and the crater position is misplaced in the direction of vibration, which is conducive to the generation of a new laser action trajectory. These experimental results have a certain guiding effect on the design of ultrasonic vibration assisted laser control parameters.
- laser ablation /
- ANSYS /
- ultrasonic vibration /
- temperature field /
- finite element simulation

HTML全文

图 1 传统激光搭接率计算示意图

Figure 1. Schematic diagram of conventional laser lap rate calculation

下载: 全尺寸图片幻灯片

图 2 超声振动复合激光热影响区搭接示意图

Figure 2. Schematic diagram of lap joint of ultrasonic vibration composite laser heat affected zone

下载: 全尺寸图片幻灯片

图 3 双激光光斑所成温度分布及凹坑形貌图

Figure 3. The temperature distribution and pit morphology of the double laser spot

下载: 全尺寸图片幻灯片

图 4 复合超声振动双凹坑温度折线图

Figure 4. Composite ultrasonic vibration double pit temperature line diagram

下载: 全尺寸图片幻灯片

图 5 不同频率下双凹坑位置图

Figure 5. Double pit location map at different frequencies

下载: 全尺寸图片幻灯片

表 1 铝的热物参数表

Table 1. Thermophysical parameters of aluminum

temperature/℃	specific heat capacity/（J/（kg·K））	thermal conductivity/ （W/（m·K））	density/ （kg/m³）	liquidus temperature/℃	solidus temperature/℃
20	899.56	236.57	2700	660.2	660.2
200	983.24	238.66	2700	660.2	660.2
500	1121.3	221.49	2700	660.2	660.2
660	1196.6	212.7	2700	660.2	660.2

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表 2 常用对流换热系数范围

Table 2. Common convection heat transfer coefficient range

condition	forced convection of gas/（W/（m²∙℃））	natural air convection/（W/（m²∙℃））	forced convection of water/（W/（m²∙℃））	kerosene natural convection/（W/（m²∙℃））
coefficient values	20−100	3−10	1000−1500	500−1000

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表 3 搭接率计算参数及结果

Table 3. Calculation parameters and results of lap joint rate

scanning speed/（mm/s）	amplitude/μm	frequency/kHz	initial phase angle/（°）	diameter of heat affected zone/μm	overlap rate/%
200	0	0	0	50	74.71
200	10	15	0	50	64.47
400	10	15	0	50	45.02
600	10	15	0	50	25.22
800	10	15	0	50	8.58
1000	10	15	0	50	0

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