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Design and Analysis of Freeform Shell Structures Composed of Doubly Curved Sheet Metal Panels


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Our current research deals with innovative structures made up of doubly-curved sheet metal panels for realization of wide-spanning, lightweight freeform structures. We introduce the design and geometrical optimization of a prototype shell structure consisting of two thin layers of sheet metal. Thin sheet metal construction poses various design challenges: Global and local buckling effcts and local stress phenomena such as shear and hole bearing forces. The main focus is structural analysis of the shell structure with an in depth discussion on the challenging modelization of multilayered, ultra-thin sheet metal components.
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Keywords: Incremental Sheet Forming; Individual Freeform Panels; Self Supporting Structures; Sheet Metal; Stretch Forming

Document Type: Research Article

Affiliations: 1: Chair of Structures and Structural Design, RWTH Aachen University Schinkelstraße 1, 52062 Aachen, Germany, Email: [email protected] 2: Chair of Structures and Structural Design, RWTH Aachen University Schinkelstraße 1, 52062 Aachen, Germany 3: Institute of Metal Forming, RWTH Aachen University Intzestraße 10, 52056 Aachen, Germany

Publication date: October 7, 2019

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