Next Article in Journal
Fire Damage Assessment of Reinforced Concrete Structures Using Fuzzy Theory
Next Article in Special Issue
Impact of the Fused Deposition (FDM) Printing Process on Polylactic Acid (PLA) Chemistry and Structure
Previous Article in Journal
Detection of Pitting in Gears Using a Deep Sparse Autoencoder
Previous Article in Special Issue
Influence of the Origin of Polyamide 12 Powder on the Laser Sintering Process and Laser Sintered Parts
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessFeature PaperConcept Paper
Appl. Sci. 2017, 7(5), 516; doi:10.3390/app7050516

Sintering of Two Viscoelastic Particles: A Computational Approach

1
Polymer Technology, Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands
2
Brightlands Materials Center, Geleen, 6167 RD, The Netherlands
*
Author to whom correspondence should be addressed.
Academic Editor: Peter Van Puyvelde
Received: 31 March 2017 / Revised: 2 May 2017 / Accepted: 10 May 2017 / Published: 16 May 2017
(This article belongs to the Special Issue Materials for 3D Printing)

Abstract

Selective laser sintering (SLS) is a high-resolution additive manufacturing fabrication technique. To fully understand the process, we developed a computational model, using the finite element method, to solve the flow problem of sintering two viscoelastic particles. The flow is assumed to be isothermal and the particles to be in a liquid state, where their rheology is described using the Giesekus and XPP constitutive models. In this work, we assess the parameters that define this problem, such as the initial geometry, the Deborah number and other dimensionless parameters present in the rheological models. In particular, the conformation tensor is considered, which is a measure for the polymeric strain and plays an important role in the crystallization kinetics of semicrystalline polymers like polyamide 12, usually used in SLS. View Full-Text
Keywords: finite element method; viscoelastic flow; coalescence; 3D printing; SLS finite element method; viscoelastic flow; coalescence; 3D printing; SLS
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Balemans, C.; Hulsen, M.A.; Anderson, P.D. Sintering of Two Viscoelastic Particles: A Computational Approach. Appl. Sci. 2017, 7, 516.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top