Investigation of effect of two-side laser shock order on small-hole specimen strengthening
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摘要: 小孔构件是典型的应力集中细节,其易在疲劳载荷下产生裂纹,影响关键结构的使用性能和服役寿命。为了研究双面冲击次序对小孔件强化效果的影响,对双面激光同时冲击强化(双面对冲)和依次冲击强化的TC4-DT小孔构件进行了疲劳拉伸试验,并利用ABAQUS有限元软件,对两种冲击次序强化后的残余应力分布进行了仿真。结果表明,双面对冲的试样疲劳增益是双面激光依次冲击强化后的2倍以上;双面对冲后小孔件的应力分布更均匀,其疲劳源明显偏离厚度中点处,而双面激光依次冲击时,两激光冲击表面的残余应力差较大。仿真结果与试验有较好的一致性。Abstract: Small-hole components have typical details of stress concentration so that they are easy to produce fatigue cracks under fatigue load and the usage performance and service life of critical structures are easily affected. In order to study effect of two-side laser shock processing (LSP) order on strengthening of small-hole specimens, fatigue tensile tests of TC4-DT hole components by two-side LSP simultaneously and two-side LSP successively were carried out. ABAQUS finite element software was adopted to conduct simulation study on residual stress distribution of TC4-DT hole components after different two-side LSP. The results show that the specimen fatigue gain after two-side simultaneous LSP is above 2 times than that after two-side successive LSP. Residual stress distribution of a hole component after two-side simultaneous LSP is more homogeneous. And the fatigue source deviates from the midpoint of the thickness significantly. The difference of residual stress of two LSP surfaces is large after two-side successive LSP. The simulation results have good agreement with the experiment results.
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[1] SHEN Y Y, ZHAI W J. Cold extrusion family introduction of FTI's reinforcement techniques of holes[J]. Civil Aircraft Design and Research, 1998(1):1-7(in Chinese).
[2] QIAN X M, JIANG Y F, GUAN H B, et al. Research and application of strengthening technology for fastening holes of aircraft structures[J]. Journal of Mechanical Strength, 2011, 33(5):749-753(in Chinese).
[3] CAO Z W,CHE Z G,ZOU S K, et al. The effect of laser shock peening on fatigue property of 7050 aluminum alloy fastener hole[J]. Applied Laser, 2013, 33(3):259-262(in Chinese).
[4] WANG Q, WANG X, GAO Y K, et al. Effect of strengthened hole on the fatigue life of TC18 titanium alloy[J]. Materials Engineering, 2011, 39(2):84-86(in Chinese).
[5] SHEPARD M J, SMITH P R, AMER M S. Introduction of compressive residual stresses in Ti-6Al-4V simulated airfoils via laser shock processing[J]. Journal of Materials Engineering and Performance, 2001, 10(6):670-678.
[6] WANG J M, ZHOU Q L, JIANG Y F, et al. Numerical simulation of sheet deformation by hollow laser shock[J]. Laser Technology, 2012, 36(6):727-730(in Chinese).
[7] WANG S B, FAN Y, WU H X, et al. Research of strengthening 7050 aerial aluminum alloy structural material with laser shock processing[J]. Chinese Journal of Lasers, 2014, 31(1):125-128(in Chinese).
[8] JIANG Y F, CHENG Z J, DING B, et al. Residual stress and fatigue failure in hole specimen by one side laser shock processing[J]. Laser Infrared, 2014, 44(10):1090-1094(in Chinese).
[9] FAN Y, WANG S B, WU H X, et al. Experimental research of laser shock processing on aerial aluminum alloy[J]. Laser Technology, 2003, 27(4):273-275(in Chinese).
[10] PEYRE P, MERRIEN P, LIEURADE H P, et al. Laser induced shockwaves as surface treatment for 7075-T7351 aluminum alloy[J]. Surface Engineering, 1995, 11(1):47-52.
[11] MONTROSS C S, WEI T, YE L, et al. Laser shock processing and its effects on microstructures and properties of metal alloy:a review[J]. International Journal of Fatigue, 2002, 24(10):1021-1036.
[12] JIANG Y F, ZHANG J W, JING R, et al. Analysis of the residual stress field in hole specimen by laser shock processing with different power density[J]. Laser Infrared, 2012, 42(8):866-869(in Chinese).
[13] CUELLAR S D, HILL M R, de WALD A T, et al. Residual stress and fatigue life in laser shock peened open hole samples[J]. International Journal of Fatigue, 2012, 44:8-13.
[14] FAN Y, WANG S B, WU H X, et al. Research of residual compressive stress induced by laser shock processing on 7050 aerial aluminum alloy[J]. Applied Laser, 2003, 23(1):5-8(in Chinese).
[15] ZHOU J Zh,YANG X D,HUANG S, et al. Residual stress field of ZK60 specimen with central hole induced by both-side laser shot peening[J].Chinese Journal of Lasers, 2010, 37(7):1850-1855(in Chinese).
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