New Finite Element for Bond‐Slip Analysis

Abstract

A new finite element for bond stress‐slip analysis is presented. A one dimensional model which is based on equilibrium and local bond stressslip law is developed. The relationship between axial force and slip at the elements nodes is expressed through a stiffness matrix. The global stiffness matrix is assembled and solution yields slip, strain and stress distributions along the steel bar. The nonlinear bond stress‐slip relationship leads to an iterative technique which is found to converge rapidly. The proposed method predictions are compared with experimental results of monotonic and push‐pull tests and very good correspondence is found.