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| Shock pressure induced by glass-confined laser shock peening: Experiments, modeling and simulation | |
Wu XQ(吴先前) ; Duan ZP(段祝平); Song HW(宋宏伟); Wei YP(魏延鹏); Wang X(王曦); Huang CG(黄晨光); Wu, XQ (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Hydrodynam & Ocean Engn, Beijing 100190, Peoples R China
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| Source Publication | JOURNAL OF APPLIED PHYSICS |
| 2011-09-01 | |
| Pages | 053112 |
| Conference Name | 9th Workshop on Piezoresponse Force Microscopy (PFM)/10th International Symposium on Ferroic Domains |
| Conference Date | SEP 22-24, 2010 |
| Conference Place | Prague, CZECH REPUBLIC |
| Abstract | The shock pressure generated by the glass confined regime in laser shock peening and its attenuation in the target material are investigated. First, the particle velocity of the target back free surface induced by laser generated shock pressure of this regime is measured using a photonic Doppler velocimetry system. The temporal profile of the particle velocity at the back free surface, where the elastic precursor is captured, manifests a powerful diagnostic capability of this newly developed photonic Doppler velocimetry system for tracking the velocity on short time scales in shock-wave experiments. Second, a coupling pressure analytical model, in which the material constitutive models of confined layers and target material are considered, is proposed to predict the plasma pressure profile at the surface of target. Furthermore, using the predicted shock pressure profile as the input condition, the dynamic response of the target under the shock pressure is simulated by LS-DYNA. The simulated back free surface velocity profile agrees well with that measured by the photonic Doppler velocimetry system. Finally, the attenuation behavior of stress waves and particle velocities in the depth of the target is analyzed, and it indicates an exponential decay. The corresponding empirical formulas for the attenuation behavior are given based on the numerical results. |
| Keyword | Doppler Effect Dynamic Response Glass Glass Lasers Velocimeters Velocity Control Velocity Measurement Analytical Model Diagnostic Capabilities Empirical Formulas Exponential Decays Free Surface Velocity Free Surfaces Laser Shock Peening Ls-dyna Particle Velocities Photonic Doppler Velocimetry Plasma Pressures Shock Pressure Short Time Scale Stress Wave Target Materials Temporal Profile Wave Experiments Stress Waves Plasma Generation Aluminum Geometry Alloys Metals |
| Department | LMFS冲击与耦合效应(LHO) |
| URL | 查看原文 |
| Indexed By | CPCI ; EI |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/46854 |
| Collection | 水动力学与海洋工程重点实验室(2009-2011) |
| Corresponding Author | Wu, XQ (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Hydrodynam & Ocean Engn, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Wu XQ,Duan ZP,Song HW,et al. Shock pressure induced by glass-confined laser shock peening: Experiments, modeling and simulation[C]JOURNAL OF APPLIED PHYSICS,2011:053112. |
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