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XU Baiqiang, LIU Hongkai, XU Guidong, XU Chenguang, LI Junmin. Mixed stress-displacement finite element method for laser-generated ultrasound[J]. LASER TECHNOLOGY, 2014, 38(2): 230-235. DOI: 10.7510/jgjs.issn.1001-3806.2014.02.018
Citation: XU Baiqiang, LIU Hongkai, XU Guidong, XU Chenguang, LI Junmin. Mixed stress-displacement finite element method for laser-generated ultrasound[J]. LASER TECHNOLOGY, 2014, 38(2): 230-235. DOI: 10.7510/jgjs.issn.1001-3806.2014.02.018
shu

Mixed stress-displacement finite element method for laser-generated ultrasound

  • 1.

    Faculty of Science, Jiangsu University, Zhenjiang 212013, China;

  • 2.

    School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China

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  • Received Date: April 10, 2013
  • Revised Date: April 22, 2013
  • Published Date: February 24, 2014
    Graphical Abstract
    • Abstract
  • In order to study the generation and propagation of laser-generated ultrasound in isotropic semi-infinite aluminum material, a laser-generated ultrasound in an arbitrary elastic semi-infinite medium model was established by using mixed stress-displacement finite element method and perfectly matched layer(PML). The transient wave snapshots and surface normal displacement waveforms in semi-infinite aluminum materials were obtained. The surface normal displacement waveforms were compared with the same geometrical finite element model. The results show that the mixed stress-displacement finite element method can effectively eliminate reflection waves from truncated boundary, and simulate the generation and propagation of ultrasound in semi-infinite solid material accurately. The simulation results provide an effective method for research of the laser-generated ultrasound waves in micro-nanostructure by picosecond or femtosecond laser irradiation.
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    • References (15)
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