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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.12 [2005] >
IJEMS Vol.12(5) [October 2005] >
| Title: | Influence of fibre proportion and position on the machinability of GFRP composites- An FEA model |
| Authors: | Budan, D Abdul |
| Issue Date: | Oct-2005 |
| Publisher: | CSIR |
| IPC Code: | G01N3/58, C08B |
| Abstract: | More commonly considered criteria
for judging the machinibility are the cutting forces on the tool and power
consumption. A classical Merchant’s model is widely used to predict the cutting
forces while machining isotropic material. However, no such model exists to
predict the cutting forces while machining orthotropic materials. In this
paper, an effort is made to modify the Merchant’s formula by incorporating the K-factor to evaluate the shear strength,
the fibre orientation as shear angle and a constant coefficient of friction.
The cutting forces evaluated by modified Merchant’s model on unidirectional
GFRP composite material has been compared with the results predicted by
two-dimensional FEA model. In FEA model both maximum stress and Tsai-Hill
failure criteria were used to simulate the chip separation. The influence of
composite design, in particular the fibre proportion and orientation on cutting
forces has been investigated. The higher fibre proportion in the composite
caused an increase in cutting force values. Fibre orientations 45° and 60° have
shown favorable results. The FEA predicted results have shown good agreement
with the results evaluated by modified Merchant’s model. |
| Page(s): | 443-450 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.12(5) [October 2005]
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