Abstract：In order to simulate seismic source, 2D and axially-symmetric finite-element methods are used to solve Lamb's problems that belong in the three types: (I) Poisson-solid mediuW and surface point source that produces vertically-downward concentrative force, (2) Poisson-solid medium and surface line source which generates vertically-down-ward concentrative force, and (3) Non-poisson solid medium and surface point source which brings vertically-downward concentrative force.Numerical solutions of Lamb's problems using finite-element methods show the wave fields created by different sources in different media, and reveal obviously the wave phenomena which were only known by few people.The sufficient use of properties of wave field created by seismic source favours improving the quality of data acquisition, data processing and data interpretation.
收稿日期: 1987-06-19
引用本文:
徐常练. 兰姆问题有限元法数值解及其在地震勘探中的意义[J]. 石油地球物理勘探, 1988, 23(2): 163-170.
Xu Changlian. The numerical solution of Lamb's problem using finite-element method and its significance to seismic exploration. OGP, 1988, 23(2): 163-170.
