Jordan Journal of Civil Engineering

A Review and Comparative Study of Boundary Conditions Used for Wave Transmission in Soil with Application in Free Field Response


Lakshmi Kant; Avik Samanta;


In soil�structure interaction (SSI) problem, the structural response is affected by additional wave energy dissipation through radiation and material damping of soil. The infinite soil around a sizeable stiff structure behaves like a natural damper. The modeling of such phenomenon of wave transmission that radiates outward from the vibrating structures towards infinity has significant difficulties. In numerical analysis, the only finite domain of the soil medium is analyzed and boundary condition (BC) is imposed to prevent the outgoing radiation waves from reflecting of the boundary region. The accuracy of SSI simulation in numerical analysis depends on how well the non-reflecting boundary condition is working in the simulation. Many approaches have been developed to simulate such boundary conditions over the past few decades and the accuracy of waveabsorbing BC has been improved over the period of time. This paper aims to review and implement the different wave transmitting boundary conditions that are generally familiar in analyzing problems in the soil�structure interaction. Accuracy, suitability and application of wave-absorbing BCs are studied in this paper using the finite element program ABAQUS modeling.


Soil-structure interaction, Boundary condition, Finite element (FE), Free field response of soil, Numerical analysis