Strength prediction in single beads of large area additive manufactured short‐fiber polymers

The use of fiber reinforcement in large area additive manufactured components is of industrial interest due to the ability to enhance the structural properties of final processed parts. This work presents a methodology to predict the tensile, compressive, and flexural yield strength of single beads...

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Bibliographic Details
Published in:Polymer composites 2021-12, Vol.42 (12), p.6534-6550
Main Authors: Russell, Timothy, Jack, David A.
Format: Article
Language:English
Subjects:
additive manufacturing
Beads
composites
Compressive strength
Failure analysis
Fiber orientation
Fiber reinforced materials
Fiber reinforcement
Finite Element Analysis (FEA)
Methodology
Parameter sensitivity
strength
structure–property relations
Three dimensional printing
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Summary:The use of fiber reinforcement in large area additive manufactured components is of industrial interest due to the ability to enhance the structural properties of final processed parts. This work presents a methodology to predict the tensile, compressive, and flexural yield strength of single beads of a large‐scale, 3D printed, short‐fiber reinforced material. The methodology is built on the strength theory of Van Hattum and Bernardo, which combines the Tsai‐Wu failure criteria with Advani and Tucker's orientation averaging technique, allowing fiber orientation flow model results to serve as direct input into strength predictions. Visual advantages of the methodology such as the ability to plot spatially varying strength constants and failure plots are demonstrated. In addition, an analysis of the methodology's sensitivity to various parameters is conducted. Overview of 3D printing melt deposition modeling for internal fiber microstructure realignment resulting in the spatial variation of mechanical properties.
ISSN:0272-8397
1548-0569
DOI:10.1002/pc.26319