cad final project presentation

8/8/2019 Cad Final project presentation

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CAD Applications Final Project

Pankaj Sharma

Department of Mechanical

Engineering

University at Buffalo


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:Pro b le m S ta te m e n t &Pro d u ct D e sig n A n a lysis o f fla p m ob ile

p h o n e:Design Goal

( ,Flap Analysis basic motion simulation stressanalysis while applying different pressure forces

)on flap Drop test of complete body ( )NEW USP unique selling point generation &Battery mechanism Location Customer feedback


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Market Survey of flap cellphones

:References[ ] :// . . / / - / - . , - -3 http www lg com us mobile phones LG LX550 jsp Nov 20 2010[ ] :// . . / / , - -4 http us blackberry com smartphones blackberrypearl8200 Nov 20 2010[ ] :// . . / - . , - -5 http www gsmarena com nokia_2760 1975 php Nov 20 2010[ ] :// . . / / - - - - - -6 http www buy com prod alcatel elle flip phone with camera

/ / / / . , - -unlocked q loc 12435 204735396 html Nov 20 2010


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:Idea Generation Phase

:Concept Design Overall cell phone body

surface concept


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Parameters Concept 1 Concept 2Pros

Aesthetical looks better Aesthetical ok Aesthetics Excellent GoodSurface finish Good ExcellentDurability Good Very good

Mock upResponse fromCustomers

5(Very High) 4(High)

Cons ManufacturingIssues

Mold design of such design will be little bitcomplicated

Flap shaft mechanism willbe complicated

Quality Maintainability will be a major issueCost

High (Due to complicated profile) Moderate

Comparison of Alternative Designs


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Idea Generation for New Unique Selling point inCell phone


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Compact Tube Light Retractable USB DrivePros

We can read while walking and travelling Students problem of loosing USBdrive will be resolved

Easiness of use Users do not need to carry cable for

data transferCons Complicated and delicate productMore chances of breakage of tube light Care while using

Cost $7 $6

Comparison for new features concepts


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Decision Making Table

KPOVKPIV Parameters Ease of

Manufacturing(30%)

Cost of Quality(20%)

Final Cost(50%)

TotalScore(100)

Concept 1 20 15 40 75Concept 2 25 17 45 87Please note that Final cost high means less value for decision matrix table

:cision table for cell phone concepts

KPOVKPIV Parameters Ease of Manufacturing

(20%)CustomerResponse (30%)

Final Cost(50%)

TotalScore

Mini Light 20 15 35 70USB Drive 25 15 37 77

:Decision table for USP


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Sketches


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Sketches


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Sketches


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Sketches


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Detailed 2D drawing of Flap body


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Detailed 2D drawing of Main Body


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Complete Assembly Exploded View


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Flap Assembly Exploded View


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Main Body Assembly Exploded View


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Start

Choose the materialfor Engineering

Analysis

Apply the material properties on the mobileassembly in the simulation mode of SolidWorks and

set the model for analysis

Set the Flap angle and applyvariable pressure force on the

flap

Meshing

If meshing is done smoothly run thesimulation study

Yes

No

Take the plot reading for Von messes stressgeneration and strain reading and check the

major area of stresses

Update the excel sheet for von messes stress obtain atparticular angle and for a particular material and repeat

all the iterations from the step3

Stop

ign Optimization Flow Chart for analyzing von messes stressdifferent materials at various flap angles


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lapAngles ressure( )orce psi ( )on Messes Stress PSI Straincryliclastic ylon 6 cryliclasticMaterialylon 6

Max Max Max Max90 .0 01 .40 4 .42 2 . -7 36E 05 . -2 06E 05

110 83 94 . -1 19E 04 . -3 43E 05130 .77 9 88 . -9 79E 05 . -3 43E 05150 .76 4 .87 3 . -1 14E 04 . -3 19E 0590 .0 5 .2017 9 2108 . -3 60E 03 . -1 03E 03110 .4147 6 4699 . -5 99E 03 . -1 71E 03130 .3895 5 4421 . -4 89E 03 . -1 36E 03150 `3822 4365 . -5 70E 03 . -1 59E 03

:Plots Analysis data comparison for various.plastics


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Von Messes Stresses at various flap Angles at VariablePressure Forces


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,Von Messes Stress Strain at 150 degree Angle at Pressure Forces. .of 0 5 psi


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:A Motion Simulation of Flapbased cell phone :B Pressure Force

Analysis

Virtual Drop Test Simulation

Animations of the Engineering Analysisresults


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Virtual Drop Test Simulation

: . A 0 01 thickness : . B 0 02thickness

: . A 0 03 thickness


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Von Messes Stresses of body casing for shell thickness.0 03inch

, With ribs additionreduction in stresses about

( . .40 percent from 0 5 to 0 3).MPa


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Challenges Faced During the Project

Surfacing

Meshing of this bodiesMeshing for complete BodyDrop Test Failures on SolidWorks

in Furnas Lab

Solutions

:Surfacing Model Simplification and newtools learning

:Meshing simplification of the model :Drop Test Failures Theoretical Hypothesis

developed and 1 Newton impact force applied

.for analysis purpose


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Questions ?

cad final project presentation

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