FEM을 이용한 동일 적층각 CFRP 평판의 적층수 변화에 따른 물성치 예측

Abstract

The world make efforts for increased energy efficiency. Because of pollution and fuel. Weight lightening of machine solve a problem of pollution and fuel shortage. Weight lighting of transportation equipment as passenger safety is also important. Therefore Machine field is trying to apply CFRP. CFRP has specific strength, rigidity, wear resistance, and electric insulation, etc. If Laminate method(angle, ply) is changed, CFRP has mechanical properties has changed. Because It is isotropic materials. so CFRP is very difficult to calculate the theoretical equation. CFRP have to experiment for obtain exact properties of matter. If every time you change the test method has to experiment. In case of will spend a lot of money and time. Simulation method In order to solve this problem would be to apply. Many country is used to Simulation method. Korea trend apply to Simulation method gradually. GENOA is Composite materials analysis program dedicated. GENOA and other analysis programs are difference. GENOA is can be apply to the environment variables(Fiber, Matirx, Void volume ratio, Fiber Volume ratio and Stacking angle, etc). So it is with the actual experimental result stunning results. MCQ using a property of matter obtained from the actual experiment, was simulation. Thus, the properties of matter of each layer can be obtained. Previous studies have evaluated the basic physical properties of CFRP using NX-Nastran and GENOA. After had a reliability assessment. In this study, Ply can be stacked on Different to predict the strength and stiffness using the fiber and Matrix properties obtained from previous study.(Simulation specimen is same experiment specimen.) Compare the simulation results with experimental results, the reliability was evaluated.