激光激发板状分层材料的超声波场模拟

›› 2014, Vol. 27 ›› Issue (11): 38-.

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Simulation of Laser-generated Ultrasonic in Layered Planes by Spectral Element Method

XU Baiqiang,LI Junmin,XU Guidong,ZHANG Jingxiu

(1.College of Science,Jiangsu University,Zhenjiang 212013,China;
2.School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China)

Online:2014-11-15 Published:2014-11-19

Abstract

Abstract:

This paper presents a novel derivation to construct dynamic stiffness matrix of wave generation and propagation in homogeneous medium forced by line distribution loading.The frequency response of element dynamic stiffness is studied in both non-boundaries and boundaries conditions.Dynamic stiffness of the spectral element layer and the throw-off element as a function of frequency parameter for the plane case are given.An element matrix similar to finite element is proposed,which is referred to as spectral finite element method.And the modeling is established according to the matrixes to obtain the displacement response.

Key words: FFT;layered planes;laser generated ultrasonic

CLC Number:

TN244

XU Baiqiang,LI Junmin,XU Guidong,ZHANG Jingxiu. Simulation of Laser-generated Ultrasonic in Layered Planes by Spectral Element Method[J]., 2014, 27(11): 38-.

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Simulation of Laser-generated Ultrasonic in Layered Planes by Spectral Element Method

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