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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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Scotch Yoke Movement of a Shake Table
The following challenges are applications of the dynamics of a one-story structure with a vertical load and a horizontally applied force from a shake table. The shake table is made of 3D-printed components that create a scotch yoke mechanism to create linear motion from angular motion. There are three challenges where Challenge 1 serves as an introduction for Challenges 2 and 3. The purpose of these challenges is to create a single-story structure that will move on the shake table. The displacement is measured and the frequency of the roof of that structure is found.
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- Award ID(s):
- 1943917
- PAR ID:
- 10410706
- Publisher / Repository:
- Designsafe-CI
- Date Published:
- Subject(s) / Keyword(s):
- [REY] Challenge 3 – Structural Dynamics [REY] Challenge 2 – Shake Table [REY] Challenge 1 – Wheel [REY] Challenge 3 – Sensor Info [REY] Challenge 2 – Sensor Info [REY] Challenge 1 – Sensor Info [REY] Forced Vibration [REY] Free Vibration [REY] Half Power [REY] Full Power [REY] Wheel w/o Nuts [REY] Wheel w/ Nuts [REY] Data Report Other
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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