DOI: 10.4236/eng.2014.610060 Author(s) Hee Seok Kim Affiliation(s) Structural Engineering Research Division, Korea Institute of Civil Engineering and Building Technology, Goyang-si, South Korea. ABSTRACT In this paper an analytical study is carried out to examine the effectiveness of absorbing boundaries using dashpot. Validity of the absorbing boundary conditions suggested by Lysmer-Kuhle- meyer and White et al. is investigated by adopting the solution of Miller and Pursey. The Miller and Pursey’s problem is then numerically simulated using the finite element method. The absorption ratios are calculated by comparing the displacements at the absorbing boundary to those at the free field without the absorbing boundary. The numerical verification is carried out through comparison of displacement at the boundary. KEYWORDS Absorbing Boundary, Dashpot, Absorption Ratio
