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Foldable Plate Structures

Speaker: Sergio Pellegrino, California Institute of Technology
Series: CEE Departmental Seminars
Location: Bowen Hall Auditorium
Date/Time: Tuesday, December 7, 2010, 4:30 p.m. - 5:30 p.m.


I will present two alternative approaches to the problem of designing a large retractable roof spanning over a circular or elliptical stadium. The first solution is based on an extension of Hoberman's angulated element and involves plates undergoing a planar motion; it allows the plates to move towards the outer perimeter of the stadium. The second solution is a double fan structure involving a series of triangular plates that roll along the edges and are connected by cables; its hinging scheme appears more suitable for large structures.  Both solutions have a single degree of kinematic freedom and could be used for a variety of other applications.