Signal Simulation and Experimental Research on Acoustic Emission using LS - DYNA

Zhang Jianchao, School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Haidian District,Beijing 100044 , China, Hao Rujiang, Wu Zhe, Jim Green, Li Shaohua, Engineering Training Center,Shijiazhuang Tiedao University, 17 Northeast, Second Inner Ring,Shijiazhuang 050043, China, Engineering Training Center,Shijiazhuang Tiedao University, 17 Northeast, Second Inner Ring,Shijiazhuang 050043, China, School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Haidian District,Beijing 100044 , China, Department o f Electrical and Computer Engineering, University of Miami, Coral Gables FL 33146, United States, Engineering Training Center,Shijiazhuang Tiedao University, 17 Northeast, Second Inner Ring,Shijiazhuang 050043, China
2015 Journal of Engineering Science and Technology Review  
To calculate sound wave velocity, we performed the Hsu-Nielsen lead break experiment using the ANSYS/LS-DYNA finite element software. First, we identified the key problems in the finite element analysis, such as selecting the exciting force, dividing the grid density, and setting the calculation steps. Second, we established the finite element model of the sound wave transmission in a plate under the lead break simulation. Results revealed not only the transmission characteristics of the sound
more » ... stics of the sound wave but also the simulation and calculation of the transmission velocity of the longitudinal and transverse waves through the time travel curve of the vibration velocity of the sound wave at various nodes. Finally, the Hsu-Nielsen lead break experiment was implemented. The results of the theoretical calculation and simulation analysis were consistent with the experimental results, thus demonstrating that the research method using the ANSYS/LS-DYNA software to simulate sound wave transmissions in acoustic emission experiments is feasible and effective.
doi:10.25103/jestr.083.20 fatcat:h666p47xmbcwncnlcavhwjitpe