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The goal of this project is to gain a better understanding of the importance of structural integrity and how structures behave under motion. This report intends to investigate and analyze structural dynamics’ concepts with 3-D printed components in four unique challenges. Challenge 1 explores angular acceleration and rotational dynamics through a 3-D printed wheel. Challenge 2 focuses on reciprocating motion by designing and assembling a mechanism that is connected to a 3-D printed shake table. Challenge 3 involves creating structural columns which are assembled in a single-story structure. It also dives into concepts such as the natural frequency of a structure and how elements of design will influence it. Challenge 4 incorporates both Challenges 2 and 3 by shaking the single-story structure through the reciprocating motion mechanism. It also looks at important structural dynamics’ concepts such as transmissibility and resonance.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.
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Structural Dynamics Through the Lens of 3-D Printing
This report explores the topics of dynamics with a focus on structures and 3-dimensional printing. With the first challenge, angular velocity and acceleration were the focus. The second challenge involved the ideas of converting rotational motion into linear motion. However, a target frequency and acceleration meant that an equation needed to be derived in order to gage the magnitude of the dimensions necessary to achieve this target. The final challenge required the employment of material properties and displayed the inaccuracies of the 3-D printer. Not only were topics important to dynamics highlighted through these challenges but diving further into the intricacies of 3-D printing was a large portion of experimentation and learning.
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- Award ID(s):
- 1943917
- PAR ID:
- 10410709
- Publisher / Repository:
- Designsafe-CI
- Date Published:
- Subject(s) / Keyword(s):
- [AGM] Challenge 2 – Shake Table [AGM] Challenge 3 – Structural Dynamics [AGM] Challenge 1 – Wheel [AGM] Challenge 3 – Sensor Info [AGM] Challenge 2 – Sensor Info [AGM] Challenge 1 – Sensor Info [AGM] Free Vibration [AGM] Forced Vibration [AGM] Wheel w/ Nuts [AGM] Wheel w/o Nuts [AGM] Half Power [AGM] Full Power [AGM] Data Report Other
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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