3-D finite element method (FEM) is widely used as an effective numerical simulation technique to solve the complex engineering problem. While using the FEM simulation technique at first it is necessary to solve the problem. However

almost all of the engineering problems have very complicated structure and shape

so that there are also a lot of difficulties in mesh generation. Furthermore

the correct generation of mesh is one of the most significant issues that directly affect the accuracy of the FEM simulation. Though the existing commercial software has an excellent automotive mesh generation system

the hexahedral automatic mesh generation and its adaptation are not enough to be used for practical applications

because the mesh generation of complex shape is very difficult and still done intensively by hand. In this study

we present a new method to generate an appropriate mesh using existing regular hexahedral mesh and hexahedron mesh generation technique

which are based on the wave transmits theory with damp. The results show that an effective hexahedron mesh generation can be obtained of the Complex Shoped FEM is transmitted to redular mesh side using wave method.discrete hexahedral mesh model generated when shape of the side apply to regular mesh side as a wave constraint.