Ashley Thrall

Ashley Thrall

Ashley P. Thrall completed her Ph.D. in the “Design and Optimization of   Linkage-Based Movable Bridges” in May   2011 under the direction of Sigrid Adriaenssens, Maria Garlock, and David Billington.  This research   focused on developing new forms for movable bridges utilizing linkages as the   main structural and kinematic elements. The research methodology has included   using physical shape-finding techniques to develop new conceptual designs that   utilize mechanical advantage to minimize power demands. The geometry and the   section profiles of each conceptual design are optimized for minimum self-weight   and minimum force for operation.  She is currently the Cardinal John O’Hara,   C.S.C. Assistant Professor of Civil Engineering and Geological Sciences at the University of Notre Dame where  she directs the Kinetic Structures Laboratory (


Thrall A.P., Zhu M.,Guest J., Paya-Zaforteza I.,Adriaenssens S.(2012). ‘Structural Optimization of Deploying Steel Pantographs’. In: ASCE  Journal of Computing in Civil Engineering (accepted for publication)

Thrall A.P., Adriaenssens S., Paya-Zaforteza I, Zoli E. (2012). ‘Linkage Based Movable Bridge Forms: Design Methodology and Three Novel Forms. In: Engineering Structures, v.37,pp.214-223.

Thrall A., Adriaenssens S., Zoli T.P. (2012). ‘A Linkage-Based Movable Bridge Form: Design and Optimisation’. ASCE Structures Congress, Chicago, USA.

Thrall A., Adriaenssens S., Zoli T. (2011). ‘Applications for Linkages in Movable Bridge Design’. Structural Morpohology Workshop IABSE-IASS Symposium, London, UK.

Thrall A., Adriaenssens S. (2010).’Case studies in integrating mechanical and structural systems in movable bridges’., IASS 2010. Shanghai, China.

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