7075铝合金喷丸参数影响的数值仿真及实验研究

汪东明; 单以才; 孟龙晖

doi:10.13433/j.cnki.1003-8728.20220277

7075铝合金喷丸参数影响的数值仿真及实验研究

doi: 10.13433/j.cnki.1003-8728.20220277

1.
江苏电子信息职业学院汽车工程学院，江苏淮安　223003
2.
南京晓庄学院电子工程学院，南京　211171
3.
南京工业大学机械与动力工程学院，南京　211816

基金项目: 江苏省青年基金项目（BK20190676）与江苏省高校自然科学基金项目（19KJB460019）

详细信息

作者简介:
汪东明，副教授，993139886@qq.com

通讯作者:
孟龙晖，讲师，博士，menglonghui@njtech.edu.cn

中图分类号: TG146.21
计量
- 文章访问数: 42
- HTML全文浏览量: 19
- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2022-02-09
- 刊出日期: 2024-03-25

Numerical Simulation and Experimental Study on Influence of Shot Peening Parameters of 7075 Aluminum Alloy

1.
Department of Automobile Engineering, Jiangsu Vocationnal College of Electronics and Information, Huai'an 223003, Jiangsu, China
2.
School of Electronic Engineering, Nanjing Xiaozhuang University, Nanjing 211171, China
3.
School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 211816, China

摘要

摘要: 为探究7075铝合金喷丸加工过程中不同喷丸参数对于喷丸结果的影响，本文基于Abaqus软件对相应的喷丸过程进行了有限元仿真，观察不同喷丸参数对于表面残余应力分布、表面粗糙度以及表面三维形貌的影响，同时基于实验过程对相应的喷丸过程进行研究，并对仿真和实验所得到的结果进行对比，最终发现，虽然在具体数值上两者之间存在一定的差距，但在变化趋势上两者呈现较为明显的一致性。因此，可以认为两者的分析结果是较为可信的，同时得出在单纯调整弹丸尺寸和弹丸速度的条件下，表面残余应力和表面粗糙度两者难以同时兼顾，但是喷丸覆盖率的提高可以用降低生产效率为成本较好的兼顾这两方面。
- 7075铝合金 /
- 喷丸 /
- 残余应力 /
- 粗糙度 /
- 有限元
Abstract: In order to explore the influence of the different shot peening parameters on the shot peening results in the shot peening process of 7075 aluminum alloy, the corresponding shot peening process is simulated via ABAQUS software, and the effects of the different shot peening parameters on the surface residual stress distribution, surface roughness and surface three-dimensional morphology are observed. At the same time, the corresponding shot peening process is studied based on the experimental process, by comparing the simulation and experimental results, it is finally found that although there is a certain gap between the two in specific values, the two show obvious consistency in change trend. Therefore, it can be considered that the analysis results of the two are more reliable. At the same time, it is concluded that under the condition of simply adjusting the projectile size and velocity, it is difficult to give consideration to both the surface residual stress and the surface roughness at the same time, but the improvement of shot peening coverage can better take these two aspects into account at the cost of reducing production efficiency.
- 7075 aluminum alloy /
- shot peening /
- residual stress /
- roughness /
- finite element

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图 1 喷丸过程示意图

Figure 1. Schematic diagram of the shot blasting process

下载: 全尺寸图片幻灯片

图 2 不同喷丸覆盖率示意图

Figure 2. Schematic diagram of different shot blasting coverage rates

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图 3 不同喷丸覆盖率仿真结果

Figure 3. Simulation results for different shot blasting coverage rates

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图 4 不同喷丸速度下表面残余应力的分布

Figure 4. Distribution of surface residual stresses at different shot blasting velocities

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图 5 不同喷丸速度仿真下零件表面的三维形貌提取图

Figure 5. Extraction of three-dimensional surface topography for the component simulated at different shot blasting velocities

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图 6 不同喷丸速度下零件表面粗糙度变化趋势

Figure 6. Surface roughness variation trend for the component at different shot blasting velocities

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图 7 不同喷丸覆盖率下表面残余应力的分布

Figure 7. Distribution of surface residual stresses at different shot blasting coverage rates

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图 8 不同喷丸覆盖率仿真下零件表面的三维形貌提取图

Figure 8. Extraction of three-dimensional surface topography for the component simulated at different shot blasting coverage rates

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图 9 不同喷丸覆盖率下零件表面粗糙度变化趋势

Figure 9. Surface roughness variation trend for the component at different shot blasting coverage rates

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图 10 不同弹丸直径下表面残余应力的分布

Figure 10. Distribution of surface residual stresses at different shot diameter

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图 11 不同喷丸覆盖率仿真下零件表面的三维形貌提取图

Figure 11. Extraction of three-dimensional surface topography for the component simulated at different shot blasting coverage rates

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图 12 不同弹丸直径下零件表面粗糙度变化趋势

Figure 12. Surface roughness variation trend for the component at different shot diameter

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图 13 喷丸实验过程和结果

Figure 13. Shot blasting experimental processes and results

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图 14 喷丸表面三维形貌提取

Figure 14. Extraction of three-dimensional surface topography of the shot blasted surface

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图 15 粗糙度仿真结果和实验结果对比

Figure 15. Comparison of surface roughness simulation results with experimental results

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图 16 不同弹丸直径下表面残余应力分布的实验结果

Figure 16. Experimental results on surface residual stress distribution at different shot diameters

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表 1 7075铝合金Johnson-Cook本构模型参数^[12]

Table 1. Parameters for the Johnson-Cook constitutive model of 7075 aluminium alloy^[12]

A/
MPa B/
MPa C n m $ {\dot {\bar{{\varepsilon }}}_{0}} $ T_melt/
℃ T_room/
℃

448 476 0.0012 0.39 1.29 0.0001 635 25

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