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Structural dynamics is the study of the behavior of structures under dynamic loads and forces. This report displays various concepts in dynamics by creating and testing 3D printed models designed and tested with certain goals. The project is organized into four Challenges, each exploring a specific dynamics concept. Challenge 1 analyzes angular acceleration and inertia’s impact on a wheel. Challenge 2 is based around designing and testing a reciprocating motion device capable of turning rotational displacement into linear displacement. Challenge 3 focuses on designing a small structure’s columns to have a specific natural frequency. Challenge 4 combines the reciprocating motion device and the structure from the previous two challenges to make a shake table. This shake table tests the structure at several different forcing frequencies to observe the impact that the forcing frequency has on the displacement at the top of the structure.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.