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Crushing of a Soda CanCrushing of a Soda Can
Sudheer sama
Graduate Student
Department of Mechanical Engineering
University of Nevada , Las Vegas (UNLV)
Advanced Energy Variation MethodsUnder
Dr Brendan.J.O,Toole
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Introduction/ObjectiveIntroduction/Objective
•• The objective of this presentation is to see the transient finitThe objective of this presentation is to see the transient finite e element analysis on the Crush of a Soda Can element analysis on the Crush of a Soda Can
•• Finite element analysis to see the Vonmises Stresses under a Finite element analysis to see the Vonmises Stresses under a Certain Axial Load will be presentedCertain Axial Load will be presented
•• Finite element analysis to see displacements under a certain AxiFinite element analysis to see displacements under a certain Axial al Load will also be presented.Load will also be presented.
•• This will lead to an Understanding of crushing on a Soda Can.This will lead to an Understanding of crushing on a Soda Can.
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Soda Can GeometrySoda Can Geometry
•• Radius of the Can Radius of the Can –– 3.3 centimeters3.3 centimeters
•• Height of the Can Height of the Can –– 12.1 centimeters12.1 centimeters
•• Thickness of the Can Thickness of the Can -- .25 centimeters.25 centimeters
•• Thickness on the lid of the can Thickness on the lid of the can -- 0.3 centimeter.0.3 centimeter.
•• Thickness on the bottom of the can Thickness on the bottom of the can –– 0.3 centimeters0.3 centimeters
Dimensions were drawn from Coca Cola Soda Can
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22--D Front View of the Soda CanD Front View of the Soda Can
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22--D Top View of the Soda CanD Top View of the Soda Can
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33--D view showing Rigid Wall with D view showing Rigid Wall with DimensionsDimensions
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33--D View showing Can and Rigid WallD View showing Can and Rigid Wall
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Meshing DetailsMeshing Details
•• Aspect Ratio Aspect Ratio –– 1:21:2
•• Height of the can Height of the can –– 20 elements20 elements
•• Circumference of the can Circumference of the can –– 10 elements10 elements
•• Model Defined for Can Model Defined for Can –– Shell in natureShell in nature
•• Model defined for Rigid Wall Model defined for Rigid Wall –– solid solid
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33--D View Showing Dimension D View Showing Dimension of Height Line Element on Soda Canof Height Line Element on Soda Can
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33--D View Showing Dimension of D View Showing Dimension of Circumference Element on Can Circumference Element on Can
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33--D View D View
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Material ModelsMaterial Models
•• *MAT_PLASTIC_KINEMATIC*MAT_PLASTIC_KINEMATIC-- Soda CanSoda Can
•• *MAT_RIGID *MAT_RIGID –– Rigid WallRigid Wall
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Mechanical Properties of the canMechanical Properties of the can
28000 28000 0.33 0.33 6060750007500027002700
Tangent Tangent Modulus(Mpa)Modulus(Mpa)
Poisson’s Poisson’s RatioRatio
Yield Yield Strength(Mpa)Strength(Mpa)
Young’s Young’s Modulus Modulus (Mpa) (Mpa)
Density(kg/m3)Density(kg/m3)
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Mechanical Properties of the Rigid WallMechanical Properties of the Rigid Wall
71507150220E+9 220E+9 0.30.3
Density (kg/m3)Density (kg/m3)Elastic Modulus(Gpa) Elastic Modulus(Gpa) Poisson’s RatioPoisson’s Ratio
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Contact InterfacesContact Interfaces
•• Surface to surface contact between Rigid Surface to surface contact between Rigid Wall and the Soda CanWall and the Soda Can
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Load CurveLoad Curve
1.000E4 1.000E4 9.000E9.000E--3 3
5.000E3 5.000E3 1.000E1.000E--3 3
1.000E3 1.000E3 0.00035 0.00035
0000
Time (sec)Time (sec)Load (N)Load (N)
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Isometric View Showing Forces Isometric View Showing Forces on Rigid wall and constraints on the bottom on Rigid wall and constraints on the bottom
of the canof the can
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Isometric View with all the applied Isometric View with all the applied ConditionsConditions
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ResultsResults
•• The Crush of the Soda Can was occurred at following ValuesThe Crush of the Soda Can was occurred at following Values
•• Vonmises Stress Vonmises Stress –– 7.652E+9 Pascal.7.652E+9 Pascal.
•• Pressure Pressure -- 3.426E+9 Pascal.3.426E+9 Pascal.
•• ZZ-- Stress Stress -- 7.42E+9 Pascal.7.42E+9 Pascal.
•• Z Z –– Displacement Displacement -- 0.07425 meter.0.07425 meter.
•• Time step Time step –– 0.00053 sec.0.00053 sec.
•• XX-- displacement displacement -- --9.0e9.0e--7 meters.7 meters.
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Results Showing PressureResults Showing Pressure
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Showing Vonmises StressShowing Vonmises Stress
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Showing Z Showing Z ––StressStress
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Plot Showing Resultant displacementPlot Showing Resultant displacement
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Initial Crush of the CanInitial Crush of the Can
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Crush at the Center of the CanCrush at the Center of the Can
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Final Crush of the CanFinal Crush of the Can
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ConclusionsConclusions
•• Made the Can to buckle realisticallyMade the Can to buckle realistically
•• The Thickness on the lid of the Can can be made such that half oThe Thickness on the lid of the Can can be made such that half of it f it lies above the neutral and other half below the neutral axis ,thlies above the neutral and other half below the neutral axis ,this is might have stiffen the lid of the can.might have stiffen the lid of the can.
•• This could be a precursor for crushing of Soda CansThis could be a precursor for crushing of Soda Cans
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AcknowledgementsAcknowledgements
Dr Brendan.J.O,TooleDr Brendan.J.O,Toole