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A platform for research: civil engineering, architecture and urbanism
Local postbuckling of omega-stringer-stiffened composite panels
https://orcid.org/0000-0003-1611-4048
Abstract In order to utilize the full lightweight potential of thin-walled stringer-stiffened composite panels, a new closed-form analytical solution for the buckling and postbuckling of omega-stringer-stiffened composite panels is introduced. Because of the high computational efficiency, it allows the analysis of the early postbuckling behaviour in the framework of preliminary design. The solution is derived based on the principle of the minimum of the total elastic potential. A suitable set of buckling shape functions models the buckling pattern and imperfection. The load is applied via prescribed displacements. The results of the closed-form model are compared and verified with finite element simulations and the implementation of another closed-form model found in the literature. An exemplary cross-ply laminated panel under uniaxial compression is investigated. The results show that the proposed model achieves excellent general agreement in the practically most relevant design space.
Graphical abstract Display Omitted
Highlights Stability behaviour of uniaxially loaded omega-stringer-stiffened composite panels. Simple closed-form analytical approximate solution. Local buckling and postbuckling analysis including initial imperfections. Results in good agreement with finite element analyses.
Local postbuckling of omega-stringer-stiffened composite panels
https://orcid.org/0000-0003-1611-4048
Abstract In order to utilize the full lightweight potential of thin-walled stringer-stiffened composite panels, a new closed-form analytical solution for the buckling and postbuckling of omega-stringer-stiffened composite panels is introduced. Because of the high computational efficiency, it allows the analysis of the early postbuckling behaviour in the framework of preliminary design. The solution is derived based on the principle of the minimum of the total elastic potential. A suitable set of buckling shape functions models the buckling pattern and imperfection. The load is applied via prescribed displacements. The results of the closed-form model are compared and verified with finite element simulations and the implementation of another closed-form model found in the literature. An exemplary cross-ply laminated panel under uniaxial compression is investigated. The results show that the proposed model achieves excellent general agreement in the practically most relevant design space.
Graphical abstract Display Omitted
Highlights Stability behaviour of uniaxially loaded omega-stringer-stiffened composite panels. Simple closed-form analytical approximate solution. Local buckling and postbuckling analysis including initial imperfections. Results in good agreement with finite element analyses.
Local postbuckling of omega-stringer-stiffened composite panels
https://orcid.org/0000-0003-1611-4048
Abstract In order to utilize the full lightweight potential of thin-walled stringer-stiffened composite panels, a new closed-form analytical solution for the buckling and postbuckling of omega-stringer-stiffened composite panels is introduced. Because of the high computational efficiency, it allows the analysis of the early postbuckling behaviour in the framework of preliminary design. The solution is derived based on the principle of the minimum of the total elastic potential. A suitable set of buckling shape functions models the buckling pattern and imperfection. The load is applied via prescribed displacements. The results of the closed-form model are compared and verified with finite element simulations and the implementation of another closed-form model found in the literature. An exemplary cross-ply laminated panel under uniaxial compression is investigated. The results show that the proposed model achieves excellent general agreement in the practically most relevant design space.
Graphical abstract Display Omitted
Highlights Stability behaviour of uniaxially loaded omega-stringer-stiffened composite panels. Simple closed-form analytical approximate solution. Local buckling and postbuckling analysis including initial imperfections. Results in good agreement with finite element analyses.
Local postbuckling of omega-stringer-stiffened composite panels
Schilling, Jakob C. (author) / Mittelstedt, Christian (author)
Thin-Walled Structures ; 181
2022-08-12
Article (Journal)
Electronic Resource
English
Postbuckling Analysis of Stringer-Stiffened Composite Laminated Cylindrical Panels
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Postbuckling Simulation of Stiffened Composite Panels
| British Library Conference Proceedings | 2004