In the last few years, isogeometric analysis (IGA) has become the object of many scientific researches. It is a new numerical analysis method, based on the usage of the exact geometry representation in analysis environment instead of the common mesh discretization. In the NURBS based IGA, the linear Lagrange polynomials basis function, utilized in FEA, are substituted by non uniform rationals b-splines basis functions, the same used in CAD environment. This new approach, in the future, will lead to a great saving of time and money, considering that the meshing phase can be computationally very expensive, hard to fully automate, error-prone, and it becomes exponentially more time consuming with the growth of the product complexity.