Alhajahmad, Ahmad ; Mittelstedt, Christian (2023)
Semi-analytical modelling of mode jumping phenomena in pressurized fuselage panels.
In: International Journal of Solids and Structures, 282
doi: 10.1016/j.ijsolstr.2023.112458
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
In this paper, a novel semi-analytical model is developed to capture the mode jumping phenomenon in composite and metallic pressurized fuselage panels. The analytical formulation is derived using the Ritz-based approach and the resulting system of nonlinear equations are solved numerically by homotopy methods. Panels with two different aspect ratios and three different types of boundary conditions are investigated. The panels are loaded in two sequential steps. In the first step the panel is loaded by pressure resulting in a primary mode shape. In the second step, the panel is loaded by an in-plane axial compressive load which causes a sudden change in the primary mode shape leading to a mode jumping event. For verification purposes, finite element models are developed and analysed using the commercial software Abaqus. It is demonstrated that the semi-analytical model is able to successfully capture the mode jumping phenomenon and predict the corresponding load. New findings concerning the mode jumping problem in pressurized fuselage panels are analysed and interpreted.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Alhajahmad, Ahmad ; Mittelstedt, Christian |
| Art des Eintrags: | Bibliographie |
| Titel: | Semi-analytical modelling of mode jumping phenomena in pressurized fuselage panels |
| Sprache: | Englisch |
| Publikationsjahr: | 15 Oktober 2023 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | International Journal of Solids and Structures |
| Jahrgang/Volume einer Zeitschrift: | 282 |
| DOI: | 10.1016/j.ijsolstr.2023.112458 |
| URL / URN: | https://www.sciencedirect.com/science/article/abs/pii/S00207... |
| Kurzbeschreibung (Abstract): | In this paper, a novel semi-analytical model is developed to capture the mode jumping phenomenon in composite and metallic pressurized fuselage panels. The analytical formulation is derived using the Ritz-based approach and the resulting system of nonlinear equations are solved numerically by homotopy methods. Panels with two different aspect ratios and three different types of boundary conditions are investigated. The panels are loaded in two sequential steps. In the first step the panel is loaded by pressure resulting in a primary mode shape. In the second step, the panel is loaded by an in-plane axial compressive load which causes a sudden change in the primary mode shape leading to a mode jumping event. For verification purposes, finite element models are developed and analysed using the commercial software Abaqus. It is demonstrated that the semi-analytical model is able to successfully capture the mode jumping phenomenon and predict the corresponding load. New findings concerning the mode jumping problem in pressurized fuselage panels are analysed and interpreted. |
| Zusätzliche Informationen: | Artikel-ID: 112458 |
| 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: | 05 Okt 2023 07:46 |
| Letzte Änderung: | 05 Okt 2023 07:46 |
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