Shake Table

1
Shake Table

• HHES Team members
• Andrew Krebs
• Gabrielle Fraire
• Kimberly Peters
• Zak Boswell

2
Team Member Roles

• Andrew Krebs Co- Project Leader
• - motors and circuit analysis
• Gabrielle Fraire Co- Project Leader
• - design development
• Kimberly Peters - Liaison with Project Partner
• - communicates about project progression,
  educational materials.
• Zak Boswell Manager of Construction

3
Reaching Needs of HHES

• Mrs. Brailes request
• Interactive for kids
• Reusable for years
• Computer visual aid for understanding
• Safe for students
• Educational material

4
Description

• The shake table will allow students to build
  basic buildings and put them on the table to see
  if they can withstand the simulated earthquake.
• The shake table will model the horizontal change
  in displacement and frequency of an earthquake.
• With these changes in displacement and frequency,
  the accelerometers will record the graph on a
  computer program and will relate to the Richter
  scale.

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Devices

• Accelerometer
• Structure
• Base
• Plexiglass
• Tracks
• Motor
• Spring System

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Accelerometer

• Vernier Software
• Measures tables acceleration
• Interactive/Graphical Interface for use by
  students via computer
• - Go-link
• Attached to the building

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Picture of Accelerometer
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Project Drawing
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Structure

• Picture

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Motor

• DC Drive
• Variable frequency
• -60rpm to 500rpm
• Pulse-width modulator
• Placement
• Potentiometer

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Motor Picture
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Placement
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Spring-Gear System

• Variable displacement
• Manual crank
• -external control of earthquake displacement
• Relates to Richter Scale

14
So far this semester

• Designed Basic Structural look for the shake
  table
• Chosen an interface system for the shake table
  and computer
• Chosen a motor type and control for the motor
• Constructed the basic framework

15
Progression Phases

• Weeks 1-4 ? Design and Development
• Weeks 5-10 ? Purchase materials begin
  construction and testing
• Weeks 10-14 ? Complete construction of original
  design and troubleshoot problems

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Gantt Chart
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Plan for next semester

• Install motor and spring system
• Test and troubleshoot
• Educational Materials

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Questions