A New FE Modelling Approach to Simulate the Inter‐Layer Adherence in Hybrid Sandwich Structures Achievable by Additive Manufacturing

Numerically predicting the mechanical behavior of additively manufactured sandwich structures, particularly those produced through filament extrusion, poses a significant challenge. Existing collapse mechanisms, including interlayer debonding, lack comprehensive numerical formulation. This paper pre...

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Bibliographic Details
Published in:Macromolecular symposia. 2024-06, Vol.413 (3), p.n/a
Main Authors: Garofano, Antonio, Sellitto, Andrea, Acanfora, Valerio, Battaglia, Miriam, Riccio, Aniello
Format: Article
Language:eng ; rum
Subjects:
composite material
Data compression
Design for manufacturability
FE model
Honeycomb cores
Interlayers
Mechanical properties
Numerical prediction
numerical simulation
polymeric filament
sandwich panel
Sandwich structures
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Summary:Numerically predicting the mechanical behavior of additively manufactured sandwich structures, particularly those produced through filament extrusion, poses a significant challenge. Existing collapse mechanisms, including interlayer debonding, lack comprehensive numerical formulation. This paper presents an improved finite element (FE) modeling approach for filament‐based additive processes. Utilizing the cohesive zone model (CZM), it incorporates a cohesive‐type contact to simulate critical layer interactions, such as the core‐face sheet interface. Validation against a literature‐referenced composite sandwich structure with designed for additive manufacturing honeycomb core demonstrates good agreement between the proposed numerical approach and experimental test data in compression and bending.
ISSN:1022-1360
1521-3900
DOI:10.1002/masy.202300181