通过建立ANSYS/LS-DYNA有限元仿真模型,对激光冲击处理后靶材的残余应力场进行了有效的预测,对隐式分析前后模型的表面形貌进行了分析,对不同激光冲击参数下激光冲击强化产生的残余应力洞进行了分析.结果表明,增加峰值压力、冲击次数和光斑直径虽然可以改善激光冲击强化效果,增加最大残余应力,但同时也会增大残余应力洞现象,使用方形光斑可以有效减弱残余应力洞现象.
参考文献
| [1] | Peyre P;Fabbro R;M errien P et al.Laser shock processing of aluminium alloys.Application to high cycle fatigue behaviour[J].Materials Science and Engineering A,1996,210(1):102-113. |
| [2] | 罗新民,张静文,赵广志,任旭东,张永康.激光冲击强化对2A02铝合金疲劳行为的影响[J].中国激光,2009(12):3323-3328. |
| [3] | 张永康,陈菊芳,许仁军.AM50镁合金激光冲击强化实验研究[J].中国激光,2008(07):1068-1072. |
| [4] | 孔德军,周朝政,吴永忠.304不锈钢激光冲击处理后的残余应力产生机理[J].红外与激光工程,2010(04):736-740. |
| [5] | Pant B K;Sundar R;Kumar H et al.Studies towards development of laser peening technology for martensitic stainless steel and titanium alloys for steam turbine applications[J].MATERIALS SCIENCE & ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2013,587:352-358. |
| [6] | Irizalp S G;Saklakoglu N;Akman E et al.Pulsed Nd:YAG laser shock processing effects on mechanical properties of 6061-T6 alloy[J].Optics and Lasers Technology,2014,56:273-277. |
| [7] | Wei X L;Ling X .Numerical modeling of residual stress induced by laser shock processing[J].Applied Surface Science,2014,301:557-563. |
| [8] | 申来娣,陈菊芳,李兴成,李仁兴.激光冲击AM50镁合金残余应力场的有限元分析[J].激光技术,2012(01):45-49. |
| [9] | 鲁金忠,张永康,孔德军,杨超君.激光两点冲击强化处理LC4合金的实验[J].农业机械学报,2006(12):206-208,176. |
| [10] | 王礼力.应力波基础[M].北京:国防工业出版社,1985 |
| [11] | 周南;乔登江.脉冲束辐照材料动力学[M].北京:国防工业出版社,2002 |
| [12] | Fabbro R;Fournier J .Physical study of laser-produced plasma in confined geometry[J].Jourrtal of Applied Physics,1990,68(2):775-784. |
| [13] | 胡永祥,姚振强,胡俊.激光冲击强化残余应力场的数值仿真分析[J].中国激光,2006(06):846-851. |
| [14] | Zhang X C;Zhang Y K;Lu J B et al.Improvement of fatigue life of Ti-6 Ai-4V alloy by laser shock peening[J].Materials Science and Engineering A,2001,527:3411-3415. |
| [15] | Kan Ding;Lin Ye .Simulation of multiple laser shock peening of a 35CD4 steel alloy[J].Journal of Materials Processing Technology,2006(1/3):162-169. |
| [16] | 姜银方,来彦玲,张磊,唐振州,李志飞.激光冲击材料表面"残余应力洞"形成规律与分析[J].中国激光,2010(08):2073-2079. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%