Study On Multihole Laminated Board Based On Finite Element Analysis

In this paper, isotropic, single-layer and multi-layers composite materials were studied respectively. The main factors which influence the bending rigidities of these materials and the relations between the factors and the bending rigidities were found. The best design of bending rigidity of composite board with holes was obtained. The paper discussed the finite element modeling method of the board with holes and compared the calculated results with the experiment results.The paper researched isotropic board based on the theory of elastic mechanics. Some conclusions were obtained: there is larger deflection if the holes are in the location of the larger bending moment. There is less deflection if the reinforcing bars are in the place of the larger bending. The experimental results are consistent with that of numerical analysis.The paper also analyzed two factors, the positions and the configurations of the holes, which influence the bending rigidities of multi-hole board. The bending rigidity of the board is positive correlation with the distance between the place of holes and the center of the board. On the other hand, the bending rigidity of moulded-in hole is larger than the drilled hole. To sum up, the largest bending rigidity can be achieved in the place of holes where has the least bending moment and the holes are reinforced.The paper principally studies on the design traits of composite materials in engineering application. Ultimately the conclusions that it is feasible to utilize the results of finite element to design the bending rigidity of multi-hole board are of practical use. The bending rigidity of the board that is designed by finite element software, according to design points, can be obviously increased.The primary purpose of this paper is to provide a metrical method to study the structural design of complex composites. In conclusion, it is entirely feasible to substitute the common materials with composites.