Soft Wall Design Project

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Soft Wall Design Project

• Jason Adams, Bill Long, Chris Barbee, David
  Salks, Abdullah Alenezi, Yaser Abbas
• UNCC Senior Design Project

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Description

• Popular Sport
• Continually Increasing Speeds
• Need for Driver and Fan Safety

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Project Goals

• Decrease g loading on the driver by 15
• Select best energy absorbing material
• Select best covering material
• Material Availability
• Test Materials to confirm selections

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Project Constraints

• Withstand Glancing Blow
• Clean Up Within 10 Minutes
• Cost Effective for Tracks
• Size and Weight
• Weather resistance
• Fan Safety
• Fire Resistant

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Technology

• Contact automobile manufactures
• Use internet to search for information
• Calculations and possible lab tests
• Assemble information
• Make selection based on information gathered
• Adaptable to all tracks

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Design Assumptions

• Use worst case scenario of 200mph head-on impact
• Concrete wall absorbs no energy
• Driver reasonably expected to survive 40gs of
  force

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Design Evaluation Plan

• Compression test
• energy absorbed by material evaluated against
  total energy during a crash
• Crash test by Lowes Motorspeedway or NASCAR?

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Pugh Method 1-Inside Matl

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Pugh Method 2 - Outside Matl
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Compression Data Results

• Aluminum Cans
• Compression Tests
• Energy Absorbed
• Arrangement of Cans

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Results of all Materials Investigated

• Aluminum Cans
• Ceramcel Foam
• Aluminum Foam
• Safety Steel
• HL34 Foam
• CF42 Basline

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Sample Calculations
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Sample Calculations cont.
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Final Drawing
Detail B-B
Detail A-A
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Recommendations

• EPS 2lbs/ft3
• Aluminum cans (Horizontal arrangement)