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    Item type:Publication, Access status: without files ,
    Ansatz zur lastpfadoptimierten Gestaltung von Sandwichstrukturen mithilfe virtueller Tests und realitätsnahen Testaufbauten
    (2022-09)
    Schwenke, Johann
    ;
    Schwan, Lukas
    ;
    Hanna, Michael
    ;
    Krause, Dieter
    Approach for load path optimized design of sandwich structures using virtual tests and realistic test setups The design of sandwich structures is challenging due to the large number of constituents and materials used. Existing design approaches do not include the consideration of the occurring initial damage as well as application-oriented boundary conditions in testing and optimization. Therefore, a general approach to the design optimization is presented consisting of the four parts problem definition, physical test, virtual test and design optimization, as well as an initialization phase and subsequent iterations. An exemplary application is performed for the novel design concept of optimizing the geometry of the core filling. From the initial results, the potential of the new design approach becomes clear, which can be used as a basis for the design optimization of any sandwich structures.
    Publicationtype: Conference Paper
      58
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    Item type:Publication, Access status: with files ,
    Virtual testing of honeycomb sandwich structures with multiple load introduction points
    (Composite Construction Laboratory, 2022-06)
    Schwan, Lukas
    ;
    Schwenke, Johann
    ;
    Hartwich, Tobias S.
    ;
    Krause, Dieter
    In Nomex honeycomb sandwich structures, inserts are often used for local load introduction. In the surroundings of the inserts, complicated stress conditions occur, which can often lead to local failure of the structure. Due to design measures, several inserts often have to be positioned next to each other, which can lead to interferences of the stress fields, reducing the load-bearing capacity of the individual inserts. For such cases, only rough reduction factors are specified in the ESA insert design handbook, which can lead to large safety factors. To predict the influence of the positioning of two inserts and to minimize oversizing, pull-out tests as well insert proximity tests are carried out. Respective virtual models are build-up for further numerical investigations.
    Publicationtype: Conference Paper
      101  852
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    Item type:Publication, Access status: with files ,
    Methodical approach for the model-based development of aircraft cabin product families under consideration of lightweight and cost-based design
    (Cambridge University Press (CUP), 2022-05)
    Hanna, Michael
    ;
    Schwenke, Johann
    ;
    Schwan, Lukas
    ;
    Krause, Dieter
    Aircraft cabin monuments must be optimized in terms of lightweight design, cost structure and variance. Model-based approaches support the aircraft data and help to modify them consistently during further development. In this paper, a holistic methodological approach for product families of aircraft cabin development is shown, which integrates lightweight and cost-efficient aspects, in addition to the variance focus. For this purpose, the development of cost-efficient and ligthweight optimized cabin modules is supported in a model-based way.
    Publicationtype: Conference Paper
    Scopus© Citations 3  69  77