Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Local buckling of omega-stringer-stiffened composite panels under compression–shear interaction
https://orcid.org/0000-0003-1611-4048
https://orcid.org/0000-0003-2413-2449
Abstract In the preliminary design of thin-walled structures the computational efficiency is especially important, as a high number of function evaluations of any computational analysis model is necessary. To further identify possible ways to reduce computational effort, the convergence behaviour and quality of different trial functions is investigated in the context of a computational model based on the Ritz-method. In the analysis framework, the local buckling behaviour of an omega-stringer-stiffened composite panel is investigated, where continuity conditions are ensured by the Lagrange multiplier method. The quality of the different trial functions assembled using trigonometric functions and Legendre polynomials is assessed in convergence and parametric studies.The load cases considered are uniaxial compression, biaxial compression, shear loading and their combinations. The most promising improvement on the results is identified by using a combination of a sine series and Legendre polynomials with simply supported boundary conditions.
Highlights New Ritz-method based semi-analytical model for local buckling analysis. Analysis of omega-stringer-stiffened panels under compression–shear interaction. Investigation of convergence behaviour of different trial functions. Combination of trigonometric and polynomial trial functions recommended. Highly efficient computational model for preliminary design.
Local buckling of omega-stringer-stiffened composite panels under compression–shear interaction
https://orcid.org/0000-0003-1611-4048
https://orcid.org/0000-0003-2413-2449
Abstract In the preliminary design of thin-walled structures the computational efficiency is especially important, as a high number of function evaluations of any computational analysis model is necessary. To further identify possible ways to reduce computational effort, the convergence behaviour and quality of different trial functions is investigated in the context of a computational model based on the Ritz-method. In the analysis framework, the local buckling behaviour of an omega-stringer-stiffened composite panel is investigated, where continuity conditions are ensured by the Lagrange multiplier method. The quality of the different trial functions assembled using trigonometric functions and Legendre polynomials is assessed in convergence and parametric studies.The load cases considered are uniaxial compression, biaxial compression, shear loading and their combinations. The most promising improvement on the results is identified by using a combination of a sine series and Legendre polynomials with simply supported boundary conditions.
Highlights New Ritz-method based semi-analytical model for local buckling analysis. Analysis of omega-stringer-stiffened panels under compression–shear interaction. Investigation of convergence behaviour of different trial functions. Combination of trigonometric and polynomial trial functions recommended. Highly efficient computational model for preliminary design.
Local buckling of omega-stringer-stiffened composite panels under compression–shear interaction
https://orcid.org/0000-0003-1611-4048
https://orcid.org/0000-0003-2413-2449
Abstract In the preliminary design of thin-walled structures the computational efficiency is especially important, as a high number of function evaluations of any computational analysis model is necessary. To further identify possible ways to reduce computational effort, the convergence behaviour and quality of different trial functions is investigated in the context of a computational model based on the Ritz-method. In the analysis framework, the local buckling behaviour of an omega-stringer-stiffened composite panel is investigated, where continuity conditions are ensured by the Lagrange multiplier method. The quality of the different trial functions assembled using trigonometric functions and Legendre polynomials is assessed in convergence and parametric studies.The load cases considered are uniaxial compression, biaxial compression, shear loading and their combinations. The most promising improvement on the results is identified by using a combination of a sine series and Legendre polynomials with simply supported boundary conditions.
Highlights New Ritz-method based semi-analytical model for local buckling analysis. Analysis of omega-stringer-stiffened panels under compression–shear interaction. Investigation of convergence behaviour of different trial functions. Combination of trigonometric and polynomial trial functions recommended. Highly efficient computational model for preliminary design.
Local buckling of omega-stringer-stiffened composite panels under compression–shear interaction
Schilling, Jakob C. (Autor:in) / Atamann, Dimitri (Autor:in) / Voges, Jonas (Autor:in) / Mittelstedt, Christian (Autor:in)
Thin-Walled Structures ; 180
17.07.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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