期刊
MATERIALS & DESIGN
卷 188, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2019.108414
关键词
Fused deposition modelling (FDM); Additive manufacturing; 3D printing; Thermoplastic polymers; Sintering; Mechanical properties
资金
- Talent Attraction grant from the Comunidad de Madrid [CM 2018 -2018-T2/IND-9992]
- Ministerio de Ciencia, Innovacion y Universidades, Agencia Estatal de Investigacion y Fondo Europeo de Desarrollo Regional [RTI2018-094318-B-I00]
Additive manufacturing technologies provide new opportunities for the manufacturing of components with customisable geometries and mechanical properties. In particular, fused deposition modelling (FDM) allows for customisable mechanical properties by controlling the void density and filament orientation. In this work, a methodology is provided for the prediction of the mechanical properties and mesostructure of FDM polymers. To this end, we propose a computational framework for the simulation of the printing process taking as input data specific manufacturing parameters and filament properties. A new two-stage thermal and sintering model is developed to predict the bond formation process between filaments. The model predictions are validated against original experimental data for acrylonitrile butadiene styrene (ABS) components manufactured by FDM. A parametric study is finally presented to interpret the effects of different manufacturing parameters on the mechanical performance of ABS specimens. Overall, the proposed framework offers new avenues for the design of 3D printed polymeric components with custom properties, directly in terms of manufacturing settings. (C) 2019 The Authors. Published by Elsevier Ltd.
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