Title
Prediction of the deformed geometry of vat photo-polymerized components using a multi-physical modeling framework
Author
Westbeek, S.
Remmers, J.J.C.
van Dommelen, J.A.W.
Maalderink, H.H.
Geers, M.G.D.
Publication year
2021
Abstract
In photopolymerization-based additive manufacturing a complex interplay exists between the vat photopolymerization process characteristics and the (photo-active) resin’s material properties, which governs the trajectory from the input target geometry to the resulting true geometry of a printed component. Particularly for fine featured geometries, there might be a clear mismatch between the latter two. Determining whether the entire component is printable can only be properly assessed through a test-print. The current work proposes an alternative modeling-driven route, which, after system and material characterization, facilitates predicting the geometrical defects of the resulting solidified component (including deformation). This is enabled through a coupled multi-physical modeling of irradiation, photopolymerization, solidification and chemical shrinkage.
Subject
Additive manufacturing
Vat photopolymerization
Digital light processing
Multi-physical modeling
Process simulation
Validation study
Mechanical analysis
To reference this document use:
http://resolver.tudelft.nl/uuid:c83982ae-e139-4d6a-b02e-e7a0b0f138af
DOI
https://doi.org/10.1016/j.addma.2021.101922
TNO identifier
953368
Publisher
Elsevier
ISSN
2214-8604
Source
Additive Manufacturing, 40 (40)
Document type
article