Plypass Optimization Design of Variable Stiffness CFRP laminates

Abstract

In production and life practice, composite laminated plate is playing a absolutely irreplaceable role, therefore, it is very important for the performance is good or bad, and the performance of composite laminated plate, of course is determined by its material and structure, in our rules on the dosage of specific material and size, the internal structure of the different is the laminated plates of mechanics performance of the most important cause for this difference. Laminated composite structure design need to select suitable constituent materials and arrangement of its internal structure, and by using the path of the change of composite layer, we can preparation of variable stiffness composite laminated plate, making it more buckling load, to meet our needs. In this article, we will explain laying fiber curve, the preparation process of composite laminated plate method. Using this method, in the laminated plate layer fiber after using the appropriate path, its internal stress and strain will also corresponding change, to make the composite board get better mechanical properties. We will use commercial software ABAQUS to modeling the process of the calculation, in laying path and in a straight line for the buckling of laminated plate after comparing, we can find that the curve path layer of variable stiffness of composite laminated plate buckling load, significantly higher than the stiffness of plate.