Analysis of dynamic response of axially loaded pile using nodal exact finite element model

Abstract

© 2018 Institute of Physics Publishing. All rights reserved. This research work presents the adoption of proposed displacement based finite element model so-called nodal exact finite element to solve dynamic response of axially loaded pile. The pile is assumed to be circular cross section embedded in elastic soil. The shape functions satisfy homogeneous differential equation of uniform elasto-dynamic bar was constructed. The stiffness and mass matrices for axially loaded pile are then formulated using energy principle, incorporate with proposed shape function. The dynamic response parameters, such as dynamic pile-head stiffness and damping of pile's axial vibration were computed from proposed finite element model by iterative procedure. Illustrative examples show fairly accurate results and demonstrate an effectiveness of proposed finite element compared with available analytical solutions from literatures.