A design method for beam members consisting of CFRP laminates

摘要

The goal of this research is to develop a design method for beam members consisting of Carbon Fiber Reinforced Polymer (CFRP) Laminates. Specimens with four laminate structures which consist of orthogonal laminas are employed, and four point bending tests are carried out. Finite clement analysis is conducted to examine a dominant stress to failure. Results of the bending tests are discussed with the ones calculated based on beam theory and on results of the finite element analysis. The calculated results show that the proportion of longitudinal laminas in laminate structure can design displacement by bending and that flexural strength can be determined when dominant stresses to failure and material strengths are known, which is affected by the effect of the interaction between longitudinal normal and in-plane shear stresses.