Finite element analysis of effect of machining direction on fibre orientation of FRP composites

Abstract

Machining is sometimes required to impart the necessary dimensional tolerances to FRP laminated structures and assemblies inspite of considerable strides in near-net shape manufacturing. The tool-work interaction during the machining ofFRP laminates is very complex due to inherent anisotropy or general orthotropy. Many factors, such as, the type of fibre and matrix combination, fibre volume fraction, fibre-matrix bonding strength, stacking sequence of laminate, fibre orientation and machining process parameter are now known to influence the chip formation mechanism in FRP laminates. Finite element method is used to analyze orthogonal cutting of fibre-reinforced plastic composites. The machining direction is altered with respect to the fibre orientation. A comparison is made between the surface quality obtained with the so-called positive and negative fibre orientations.