Study Of The Parameters In Ansys Numerical Simulation Of Transient Rayleigh Wave Method

Applying numerical simulation to simulate the transient Rayleigh wave is the ideal way to study transient Rayleigh wave data acquisition, data processing and interpretation for complex surface areas,and it is also a effective way to study Rayleigh wave dynamics and kinetics.The wave equation of the Rayleigh wave numerical simulation is essentially to solve the rayleigh wave equation.So,applying the numerical simulation to simulate Rayleigh method consists of all information about Rayleigh wave vibration and propagation.The varieties of the vibration information can supply more evidence for studying Rayleigh wave propagation mechanism and interpreting the exploration data.From the above,applying numerical simulation to study Rayleigh wave method is of great significance in the application and study of the exploration.The commonly used numerical simulation methods have Fourier transform method, finite element method, and finite difference method,among them the ANSYS finite element method is relatively mature applied in simulating rayleigh wave and has the merit of seting medium properties arbitraily and setting geometry form of models relatively arbitrarily.This properities gain favor from some domestic and foreign scholars.In recent years,applying ANSYS software to simulate the application of rayleigh wave in project has the obvious achivement.However,there was not any person systematacially conduct a study about setting proper parameters in the ANSYS numerical simulation and field test,and there was not anyone compare the accuracy of two dimension numerical simulation and three dimension numerical simulation.In three dimension numerical simulation,when the measuring line and underground cave are at different location, the numerical simulation method whether can find it and the accurcy of the method have not been studied.To solve these problems,the thesis applies ANSYS software to conduct systematacially and scientificlly numerical simulation study about numerical simulation parameters of transient rayleigh wave method and parameters of field exploration.Compared the numerical simulation results with field exploration data,thus arrive at numerical simulation of transient Rayleigh wave reasonable parameters and field engineering reasonable parameters.Then contrast the field exploration curve with curve gained by two dimension and three dimension of numerical simulation and get the accuracy of the two dimension and three dimension numerical simulation method.The results can provide some reasonable suggests to transient rayleigh wave numerical simulation.At last, the thesis makes use of ANSYS software to cunduct three dimension simulation and studies when the measuring lines and the underground caves are at different location whether the transient rayleigh wave can explore the caves,at the same time,veries the accuracy of simulation method.Thus the thesis can provide more comprehensive theoretical basics and directions.