How do I create design skeleton sheel under non-design shell?

GustavoVi
GustavoVi Altair Community Member
in Community Q&A

Hello, community,

I am working on an academic project about structural optimization in an aircraft fuselage. This project, inspired by the publication DOI 10.1007/s00158-015-1364-3, deals with structural optimization for shape maintenance.

In the article, the author mentions that the model consists of a fuselage skin with a thickness of 3mm, and beneath it, a design space was created to evaluate the arrangement of stiffeners and frames in an ideal scenario.

I would like to understand how this modeling is done, with one element positioned below another and only one within the design space.

Does anyone know the best way to model this?



For reference: Model in the publication

image.png


For reference: After optimization


image.png

Text from publication:

The whole structure of the front fuselage is covered with an un-designable skin of 3 mm in thickness. And the design domain is defined as the shell skeleton under the skin to get stiffener ribs like results.


Product/Topic Name : Hypermesh, optistruct

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Answers

  • Rajashri_Saha
    Rajashri_Saha
    Altair Employee

    Hi,

    I am not sure which document you are following. But if you are doing shell topology optimization, then refer the below tutorial where the base thickness is given to a sheet metal component and you can see the stiffener rib in the final design after optimization.

    https://2024.help.altair.com/2024/hwsolvers/os/topics/solvers/os/design_reference_for_structural_c_clip_r.htm

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