The goal of this study is to investigate the behavior and failure mechanism historical Irgandi Bridge located in Bursa City under earthquake loads by using linear nonlinear dynamic analysis. Dynamic characteristics bridge investigated in-situ Operational Modal Analysis (OMA) tests. finite element model updated according OMA Three different artificial records from weak very strong are applied fo...

In this research, the non-linear dynamics of drill string system model, considering influence fluid—structure coupling and effect support stiffness, are investigated. Using Galerkin’s method, equation motion is discretized into a second-order differential equation. On basis an improved mathematical numerical simulation carried out using Runge—Kutta integration method. The effects parameters, su...