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This report evaluates the dynamic response of structures using designed 3D-printed components. It is divided into four challenges, where each addresses different aspects of structural dynamics. Challenge 1 involves designing a wheel that can achieve a low angular acceleration, while exploring the principles of rotational motion. In Challenge 2, a shake table is created using a reciprocating motion system machine to convert rotational motion into linear or ground motion beneath a structure. Challenge 3 includes various free vibration tests conducted at a targeted natural frequency, achieved through the design of structural columns. Finally, Challenge 4 builds upon what was done in Challenges 2 and 3, by testing the structure’s displacement and transmissibility when subjected to forced vibrations generated by the shake table in Challenge 2. 

The 3D-printing Dynamics Design (3D3) Competition intends to train School of Civil Engineering & Environmental Science (CEES) undergraduates at the University of Oklahoma in fundamental concepts related to vibrations, structural dynamics, and earthquake engineering through a semester-long, hands-on competition run in parallel with Introduction to Dynamics for Architectural and Civil Engineers (CEES 3263). Competition participants, or 3D3 Scholars, design, build, and test a bench-scale shake table using 3D-printed components. The designs of these shake tables are published here, along with all the STL files needed for teachers or students elsewhere to fabricate the tables. Also, the data collected during the challenges is published. 

This report will explore concepts regarding structural dynamics through the utilization of a 3-D printed structure. The report has been broken into 4 challenges, each with its own concept being investigated. Within Challenge 1, a wheel was designed and printed to generate the lowest possible angular acceleration while gathering examining the theory behind rotational motion. Challenge 2 explored cyclical motion as this is where the shake table was designed and constructed. This challenge allowed for an understanding of how ground motion can be generated under a structure. Challenge 3 consisted of free vibration tests through the design of columns with a targeted natural frequency. Challenge 4 compounded off of Challenge 2 and Challenge 3 when the structure was subjected to forced, cyclical motion, from the shake table in order to explore concepts such as displacement and transmissibility generated from a structure subjected to forced vibration.The 3D-printing Dynamics Design (3D3) Competition intends to train School of Civil Engineering & Environmental Science (CEES) undergraduates at the University of Oklahoma in fundamental concepts related to vibrations, structural dynamics, and earthquake engineering through a semester-long, hands-on competition run in parallel with Introduction to Dynamics for Architectural and Civil Engineers (CEES 3263). Competition participants, or 3D3 Scholars, design, build, and test a bench-scale shake table using 3D-printed components. The designs of these shake tables are published here, along with all the STL files needed for teachers or students elsewhere to fabricate the tables. Also, the data collected during the challenges is published.