ANALYSIS OF ELASTIC PROPERTIES OF UNIDIRECTIONAL CARBON FIBER REINFORCED COMPOSITE USING MICROMECHANICAL FINITE ELEMENT MODELING

• Main Author: KHOLISH RUMAYSHAH, KHODIJAH
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/28482
• Institution: Institut Teknologi Bandung

<p align="justify"> The elastic properties of composite material can be obtained using three approaches, i.e. experimental test, analytical model, and numerical simulation. In this research, numerical finite element modeling was conducted to obtain the elastic properties of unidirectional carbon fiber-reinforced epoxy polymer (CFRP) composite. The simulation had done at the micro level which the unit cell of the composite material was modeled using a square packing arrangement type. The fiber was assumed to be distributed on a periodical pattern between matrix. The simulation was done for three values of fiber volume fraction. A periodic boundary condition corresponding to the behavior of the unit cell became a major concern in this study. The value of elastic properties obtained from numerical simulation was compared to the analytical models which had been validated using experimental results. The comparison between numerical simulation result and analytical model showed good agreement for all elastic properties i.e. error of 0–2.863% except the longitudinal shear modulus (G12) which had a 6.1–13.1% error. Fiber volume fraction variation had an effect on the value of the elastic properties. As the fiber volume fraction got higher, the values of Young’s Modulus (E11, E22, and E33) and shear modulus (G23 and G12) become larger while the values of Poisson’s ratio (?12, ?13, and ?23) become smaller. <p align="justify">