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Prediction of mechanical properties of knitted fabrics under tensile and shear loading: Mesoscale analysis using representative unit cells and its validation

Dinh, Tien Dung ; Weeger, Oliver ; Kaijima, Sawako ; Yeung, Sai-Kit (2022)
Prediction of mechanical properties of knitted fabrics under tensile and shear loading: Mesoscale analysis using representative unit cells and its validation.
In: Composites Part B: Engineering, 148
doi: 10.26083/tuprints-00019839
Artikel, Zweitveröffentlichung, Postprint

Kurzbeschreibung (Abstract)

This article presents a numerical framework to predict the mechanical behavior of knitted fabrics from their discrete structure at the fabric yarn level, i.e., the mesostructure, utilizing the hierarchical multiscale method. Due to the regular distribution of yarn loops in a knitted structure, the homogenization theory for periodic materials can be employed. Thus, instead of considering the whole fabric sample under loading, a significantly less computationally demanding analysis can be done on a repeated unit cell (RUC). This RUC is created based on simple structural parameters of knitted yarn loops and its fabric yarns are assumed to behave transversely isotropic. Nonlinear finite element analyses are performed to determine the stress fields in the RUC under tensile and shear loading. During this analysis, contact friction among yarns is considered as well as the periodic boundary conditions are employed. The macroscopic stresses then can be derived from the stress fields in the RUC by means of the numerical homogenization scheme. The physical fidelity of the proposed framework is shown by the good agreement between the predicted mechanical properties of knitted fabrics and corresponding experimental data.

Typ des Eintrags: Artikel
Erschienen: 2022
Autor(en): Dinh, Tien Dung ; Weeger, Oliver ; Kaijima, Sawako ; Yeung, Sai-Kit
Art des Eintrags: Zweitveröffentlichung
Titel: Prediction of mechanical properties of knitted fabrics under tensile and shear loading: Mesoscale analysis using representative unit cells and its validation
Sprache: Englisch
Publikationsjahr: 2022
Verlag: Elsevier
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Composites Part B: Engineering
Jahrgang/Volume einer Zeitschrift: 148
Kollation: 16 Seiten
DOI: 10.26083/tuprints-00019839
URL / URN: https://tuprints.ulb.tu-darmstadt.de/19839
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Herkunft: Zweitveröffentlichungsservice
Kurzbeschreibung (Abstract):

This article presents a numerical framework to predict the mechanical behavior of knitted fabrics from their discrete structure at the fabric yarn level, i.e., the mesostructure, utilizing the hierarchical multiscale method. Due to the regular distribution of yarn loops in a knitted structure, the homogenization theory for periodic materials can be employed. Thus, instead of considering the whole fabric sample under loading, a significantly less computationally demanding analysis can be done on a repeated unit cell (RUC). This RUC is created based on simple structural parameters of knitted yarn loops and its fabric yarns are assumed to behave transversely isotropic. Nonlinear finite element analyses are performed to determine the stress fields in the RUC under tensile and shear loading. During this analysis, contact friction among yarns is considered as well as the periodic boundary conditions are employed. The macroscopic stresses then can be derived from the stress fields in the RUC by means of the numerical homogenization scheme. The physical fidelity of the proposed framework is shown by the good agreement between the predicted mechanical properties of knitted fabrics and corresponding experimental data.

Status: Postprint
URN: urn:nbn:de:tuda-tuprints-198399
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Keywords: Knitted fabrics, Multiscale analysis, Numerical homogenization method, Periodic boundary conditions

Sachgruppe der Dewey Dezimalklassifikatin (DDC): 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau
Fachbereich(e)/-gebiet(e): 16 Fachbereich Maschinenbau
16 Fachbereich Maschinenbau > Fachgebiet Cyber-Physische Simulation (CPS)
Hinterlegungsdatum: 05 Jan 2022 14:07
Letzte Änderung: 06 Jan 2022 05:55
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