Seminar: Glaucio Paulino (Georgia Institute of Technology)
Glaucio H. Paulino – Raymond Allen Jones Chair and Professor, Georgia Institute of Technology
We study the geometric mechanics of origami assemblages and investigate how geometry affects origami behavior and properties. We review the basic mathematical rules of origami and use 3D-printed origami legos to illustrate those concepts. We then present an improved bar-and-hinge model to analyze the elastic stiffness, and estimate deformed shapes of origami. We explore the stiffness of tubular origami and kirigami structures based on the Miura-ori folding pattern. A unique orientation for zipper coupling of rigidly foldable origami tubes substantially increases stiffness in higher order modes and permits only one flexible motion through which the structure can deploy. Deployment is permitted by localized bending along folds lines; however, other deformations are over-constrained. Furthermore, we couple compatible origami tubes into a variety of cellular assemblages including configurational metamaterials. We introduce origami tubes with polygonal cross-sections that can reconfigure into numerous geometries. The tubular structures satisfy the mathematical definitions for flat and rigid foldability, meaning that they can fully unfold from a flattened state with deformations occurring only at the fold lines. The presentation concludes with a vision toward the emerging field of origami engineering, including multifunctional origami, e.g. reconfigurable origami antennas.
Professor Paulino is the Raymond Allen Jones Chair at the Georgia Institute of Technology. His seminal contributions in the area of computational mechanics include the development of methodologies to characterize the deformation and fracture behavior of existing and emerging materials and structural systems; topology optimization for multiscale/multiphysics problems; deployable structures and origami engineering; the latter being the topic of his lecture. He received the Walter L. Huber Civil Engineering Research Prize from ASCE, and he is a fellow of USACM, IACM, AAM, ASCE/EMI, and ASME. He received the Ted Belytschko Applied Mechanics Award from ASME; and the 2015 Cozzarelli Prize from the National Academy of Sciences, “which recognizes recently published PNAS papers of outstanding scientific excellence and originality.” He was president of the Society of Eng. Science (SES) in 2018. His h-index is 53 (web of Science), 69 (Google Scholar). More info can be found at the url: http://paulino.ce.gatech.edu.
All graduate seminars hosted by the Department of Civil and Systems Engineering are FREE and open to the public. Attendance is required for all enrolled CaSE graduate students.
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