부산대학교 도서관

Present investigation examines the turning process of Al–4.5%Cu/TiB2/3p MMC composite on a HMT lathe machine. An attempt has been made to explore the machining characteristics such as cutting force & chip morphology of in situ MMC composite by varying the machining input parameters like cutting speed, depth of cut, & feed rate. Further, to have an enhanced understanding of the mechanism behind turning operation, a 3D finite element simulation model was developed for the estimation of cutting force by replicating the process of turning in software code ANSYS 19.1. Here, Johnson–Cook material & failure model was employed for the constitutive material model definition in finite element simulation modelling, considering ductile nature of Al–4.5%Cu/TiB2/3p composite. In the present study, several simulation models were developed with varying cutting parameters and FE mesh sizes. The cutting forces were estimated by conducting both numerical simulation modelling & turning experimentation of Al–4.5%Cu/TiB2/3p composite, and contrasts were drawn between the results from these two methods.