Effect of Orifice Shape in Contour Crafting with Ceramic Material: A Simulation for Extrusion and Deposition Mechanism

Abstract:

Article Preview

This paper presents our experimentation and modeling efforts to study the pattern of material flow in the extrusion and deposition stages of the Contour Crafting (CC) process. Specifically, we performed a preliminary finite element analysis (FEA) of extrusion and deposition mechanisms with clay as the fabrication material. Using the FEA simulations, we derived certain basic understandings of the effect of extrusion orifice geometry on the performance of CC. We found that a square orifice is most aptly suited, both in terms of delivering the optimal fusion between layers as well as creating the desired external surface profile. Our experiments validate these results.

Info:

Periodical:

Advanced Materials Research (Volumes 26-28)

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

953-956

Citation:

H. K. Kwon and K. S. Kim, "Effect of Orifice Shape in Contour Crafting with Ceramic Material: A Simulation for Extrusion and Deposition Mechanism", Advanced Materials Research, Vols. 26-28, pp. 953-956, 2007

Online since:

October 2007

Export:

Price:

$38.00

[1] B. Khoshnevis, Innovative rapid prototyping process makes large sized, smooth surfaced complex shapes in a wide variety of materials, Materials Technology, 13(2): 52-63, (1998).

DOI: https://doi.org/10.1080/10667857.1998.11752766

[2] D. Ding, P. Townsend and M.F. Webster, Numerical Solution of Filling Problems Related to Injection Moulding, " in , IUTAM Symposium on Numerical Simulation of Non-Isothermal Flow of Viscoelastic Liquids - Proceedings held in Kerkrade, the Netherlands, November, (1993).

DOI: https://doi.org/10.1007/978-94-011-0191-2_9

[3] David S. Malkus, John A. Nohel, and Bradley J. Plohr Oscillations in Piston-Driven Shear Flow of a Non-Newtonian Fluid, " in , IUTAM Symposium on Numerical Simulation of NonIsothermal Flow of Viscoelastic Liquids - Proceedings held in Kerkrade, the Netherlands, November, (1993).

DOI: https://doi.org/10.1007/978-94-011-0191-2_5

[4] Sidney Levy and James F. Carley, Plastics Extrusion Technology Handbook, ASME Press, (1994).

[5] John Benbow and John Bridgwater, Paste Flow and Extrusion Figure 8. Relationship between the surface roughness and the process control parameters Figure 7. Cross section: (a) square orifice; (b) elliptical orifice (a) (b).