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Despite these advantages, challenges persist in achieving consistent mechanical properties in comparison to traditional manufacturing methods due to inter-strand bonding issues, void formation, and anisotropy. In this study, a model based on peridynamic theory is proposed to study the mechanical behaviour of acrolonitrile butadiene styrene parts produced by material extrusion focusing on the effect of process parameters and bonding mechanisms. A novel modelling approach was developed to capture the effects of strand geometry, interstrand bonding, and microstructural interactions on macroscopic mechanical performance. The results show the accuracy and capability of Peridynamics in describing the mechanical properties of printed parts and highlight the critical influence of key parameters such as layer thickness, printing speed, and extrusion rate. This model provides a robust framework for describing the mechanical properties of material extrusion additive manufacturing components, paving the way for parameter optimisation and material-specific design.<\/jats:p>","DOI":"10.1007\/s00366-026-02323-3","type":"journal-article","created":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T09:24:35Z","timestamp":1777454675000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A peridynamic approach to modelling the mechanical behaviour of extrusion-based additive manufactured components"],"prefix":"10.1007","volume":"42","author":[{"given":"Zahra","family":"Shafiei","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ugo","family":"Galvanetto","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mirco","family":"Zaccariotto","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2026,4,29]]},"reference":[{"key":"2323_CR1","doi-asserted-by":"publisher","unstructured":"Gibson I, Rosen D, Stucker B, Khorasani, M (2021) Material Extrusion, pp 171\u2013201. https:\/\/doi.org\/10.1007\/978-3-030-56127-7","DOI":"10.1007\/978-3-030-56127-7"},{"key":"2323_CR2","doi-asserted-by":"publisher","DOI":"10.1016\/j.compstruct.2024.118490","volume":"349\u2013350","author":"I Khan","year":"2024","unstructured":"Khan I, Barsoum I, Abbas M, Al Rashid A, Koc M, Tariq M (2024) A review of extrusion-based additive manufacturing of multi-materials-based polymeric laminated structures. 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