Interaction analysis revisited by generalized finite difference method with perfectly matched layer

Mengi Y., Korkut F.

Soil Dynamics and Earthquake Engineering, vol.170, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 170
  • Publication Date: 2023
  • Doi Number: 10.1016/j.soildyn.2023.107923
  • Journal Name: Soil Dynamics and Earthquake Engineering
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), Communication Abstracts, Environment Index, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: Generalized finite difference, Inclined waves, Input motion function, Interaction, Perfectly matched, Rayleigh waves
  • Middle East Technical University Affiliated: Yes

Abstract

A unified formulation is given for solid-solid interaction problems. For the description of the formulation, the embedded foundation problem is considered with interaction interface being taken as either flexible or rigid. Introducing a transfer function relating free field displacements at interaction interface to seismic excitation, a formula is established for the evaluation of all the elements of input matrix at a single step without using complicated scattering analysis. Some sample problems are considered in the study for the assessment of the formulation. In the in-plane problem, involving an infinitely long rigid embedded foundation under the influence of inclined P-SV or Rayleigh waves, it is found that the behavior of input motion functions for θv<θcr are drastically different from those of θv>θcr for the reasons discussed in the study, where θv and θcr are respectively the inclination and critical angles for SV waves. The computations in the work are carried out by generalized finite difference method (GFDM) together with perfectly matched layer (PML).