Kharghani, Navid ; Mittelstedt, Christian (2023)
Free-edge effects at circular holes in composite laminates under hygrothermomechanical load.
In: Journal of Composite Materials, 57 (25)
doi: 10.1177/00219983231200941
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
In this paper, the free-edge effects which play an important role in the failure analysis of composite laminates are studied. Pure temperature change and its combination with biaxial tension are investigated for a composite plate with a centric circular hole that is adequately small in comparison to the dimension of the plate. Moreover, the laminate is assumed to be thin, the temperature change of all points of the plate is identical and the biaxial tensile load is applied far from the center of the hole. For this purpose, a semi-analytical method based on a two-dimensional thermoelastic boundary layer theory and a minimum potential energy principle is proposed. It is shown that the present method predicts the interlaminar peeling and shear stresses surrounding the hole with good agreement compared to the results obtained by FEM analysis.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Kharghani, Navid ; Mittelstedt, Christian |
| Art des Eintrags: | Bibliographie |
| Titel: | Free-edge effects at circular holes in composite laminates under hygrothermomechanical load |
| Sprache: | Englisch |
| Publikationsjahr: | 2023 |
| Ort: | London |
| Verlag: | SAGE |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Composite Materials |
| Jahrgang/Volume einer Zeitschrift: | 57 |
| (Heft-)Nummer: | 25 |
| DOI: | 10.1177/00219983231200941 |
| Kurzbeschreibung (Abstract): | In this paper, the free-edge effects which play an important role in the failure analysis of composite laminates are studied. Pure temperature change and its combination with biaxial tension are investigated for a composite plate with a centric circular hole that is adequately small in comparison to the dimension of the plate. Moreover, the laminate is assumed to be thin, the temperature change of all points of the plate is identical and the biaxial tensile load is applied far from the center of the hole. For this purpose, a semi-analytical method based on a two-dimensional thermoelastic boundary layer theory and a minimum potential energy principle is proposed. It is shown that the present method predicts the interlaminar peeling and shear stresses surrounding the hole with good agreement compared to the results obtained by FEM analysis. |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet für Konstruktiven Leichtbau und Bauweisen-KLuB (2023 umbenannt in Leichtbau und Strukturmechanik (LSM)) |
| Hinterlegungsdatum: | 20 Sep 2024 07:51 |
| Letzte Änderung: | 20 Sep 2024 07:51 |
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