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STRENGTH AND COST EFFECTIVENESS OF DIFFERENT GEOMETRIC HONEYCOMB SANDWICH STRUCTURE

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Iris YiJun

on 12 November 2012

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Transcript of STRENGTH AND COST EFFECTIVENESS OF DIFFERENT GEOMETRIC HONEYCOMB SANDWICH STRUCTURE

OBJECTIVES SCOPE METHODS
&
MATERIALS RESULTS STRENGTH AND COST EFFECTIVENESS OF DIFFERENT GEOMETRIC
SANDWICH STRUCTURE Goh Jun Rui Kuo Yi Jun Muhammad Ashiq Ricky Wijaya Vincent CONCLUSION Deflection vs Load Deflection increment vs Load Weight-Strength Comparison Strongest Honeycomb Circular honeycomb

Even stress distribution

Current methods unsuitable Cost Effectiveness Amount of material used
Hexagon: 35; Circle: 33
Circle more cost effective in small-scale production
Hexagonal more cost effective in large-scale industrial production Five sets of three sandwich structures
Circle
Trapezium
Hexagon
Square
Triangle

Cardboard paper
127mm X 203mm
20mm thickness Construction Dimensions

Adhesives
UHU glue

Weighing each structure Construction 1. Place metal plate onto structure
2. Place pail onto metal plate
3. Pour water into pail gradually
4. Measure deflection length
5. Repeat steps 3 & 4 till max deflection
obtained
6. Record deflection length in table
7. Plot graphs of deflection vs load Methodology LITERATURE
REVIEW Circular honeycomb structure - strongest

HOWEVER, circular honeycomb is not feasible

Hexagonal - mainly used in industries

Best strength to cost effectiveness ratio Use similar geometric cells and width

An enhanced loading technique
Repeating the experiment only thrice

Loading - may not be evenly spread out

Weights of the structures are different THANK
YOU

Q&A
First man-made structure appeared >2000yrs ago
Repeating unit cells
Shapes: hexagon, square, triangle etc.
Light-weight, high strength, high energy absorptivity
Good heat insulator – 90% air
Determine the strongest sandwich structure

Identify and analyze the most cost effective sandwich structure INTRODUCTION Background Objectives Overview DISCUSSIONS Ricky Ashiq Jun Rui 5 geometric shapes Same cell area
Ensure fairness
Optimal performance Loading experiment Uses of sandwich structures best! strongest! x 3! Apparatus and Materials DISCUSSIONS DISCUSSIONS CONCLUSION RECOMMENDATIONS LIMITATIONS Ricky Vincent Yi Jun Cost Comparison Honeycomb Sandwich Structure Rectangle Circular Rhombus Hexagonal Square Triangular Kagome 5 honeycomb patterns 5 honeycomb patterns http://www.listen2unclejay.com/gallery/albums/userpics/10001/CN%20Tower.jpg http://www.automation-drive.com/EX/05-15-03/CARmageddon1984.jpg http://wallpapermaza.com/wallpapers/3d_architecture_wallpapers_23-1280x800.jpg http://economy.ocregister.com/files/2010/09/NASA-X-48B-Blended-Wing-Body-aircraft-LRG.jpg http://yalian-fw.com/en/images/upfile/honeycomb%20box.jpg https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcQXtmn_
TNS40Jv-9rXvgWJLgncPUJUGpNL-_TVcBMQpbcGYS3N9BA http://www.clker.com/cliparts/Y/J/e/T/w/n/10-kg-weight-md.png https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcQ3eLGf0p5x5n6dWv9LM_Q7qBfeTFuj9LUMumOi0Egjkq2fOjN8Yg http://trypophobia.net/wp-content/uploads/2012/01/honeycomb.jpg http://solutions.3m.com/3MContentRetrievalAPI/BlobServlet?lmd=1303760545000&locale=en_EU&assetType=MMM_Image&assetId=1273682515442&blobAttribute=ImageFile http://static.tvtropes.org/pmwiki/pub/images/strongant_4107.png http://www.thereikicentre.ca/ESW/Images/Money.jpg https://img.tineye.com/result/a6587afa5cd6195367c761bcae42843cf4e4f3f475f1719b914d896ee0d7e153 http://ars.els-cdn.com/content/image/1-s2.0-S0263822302000582-gr1.jpg http://www.linusbike.com/wp-content/plugins/simplemap/inc/images/loading.gif Circle vs Rectangle http://www.freepatentsonline.com/6605685.html http://mathworld.wolfram.com/CirclePacking.html http://webmaths.wordpress.com/problem-solving/ http://www.sciencedirect.com/science/article/pii/S0734743X09001092 http://www.sciencedirect.com/science/article/pii/S0020740399000284 http://www.gautampuri.com/research.html http://www.sciencedirect.com/science/article/pii/S0734743X09001092 http://www.sciencedirect.com/science/article/pii/S0734743X09001092 http://www.sciencedirect.com/science/article/pii/S0734743X09001092 http://www.sciencedirect.com/science/article/pii/S0734743X09001092 http://www.sciencedirect.com/science/article/pii/S0734743X09001092 http://www.sciencedirect.com/science/article/pii/S0020740399000284 http://www.gautampuri.com/research.html Limitations of Prior Researches Mostly focused on tensile strength

Inadequate studies on some geometric pattern COST EFFECTIVENESS
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