Microstructure-Level Machining Simulation of Carbon Nanotube Reinforced Polymer Composites-Part I:Model Development and Validation  

Oleh:

Dikshit, A. ; Samuel, J. ; DeVor, R. E. ; Kapoor, S. G.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Journal of Manufacturing Science and Engineering vol. 130 no. 3 (Jun. 2008), page 031114.
Topik: Carbon Nanotube Composites; Machining Model

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ93.11 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

A microstructure-level finite element machining model has been developed to simulate the machining of carbon nanotube (CNT) reinforced polymer composites. The model integrates a failure model with a previously developed microstructure-based material model. The competition between ductile and brittle modes of failure in the polymer phase (polycarbonate) is captured by implementing the Gearing and Anand failure model calibrated at different temperatures. The CNT phase is given a simple strain-to-failure criterion. The proposed machining model has been validated at different orthogonal machining conditions for the plain polycarbonate and for composites with two different percentage loadings of CNTs. On an average, the model is seen to successfullly predict the cutting forces with an accuracy of 8% and the thrust forces with and accuracy of 13.4% for all the materials. The machingn model also predicts the continuous chip morphology and formation of CNTs. On an average, the chip thicknesses are predicted within an accuracy of 14% for plain polycarbonate and 10% for the CNT composites.

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