Recently, with the development of computer, FEM has became the most frequently used numerical analysis method, FEM shows great ability in structures analysis, however, Galerkin`s Method is more useful in grasping influence or the tendency of parameter which forms the structure, This paper perform the eigenvalue analysis using Galerkin`s Method which is advantageous in grasping the influence and the tendency of parameter which forms the structure and study on the influence of parameter that forms arch on natural frequency response. |