The City College of New York The City College of New York Department of Mechanical EngineeringDepartment of Mechanical Engineering

Assembly and Analysis ofAssembly and Analysis ofCollectors Edition Chevy ImpalaCollectors Edition Chevy Impala

Group Members:Group Members:Dave MaharajDave Maharaj

Okason MorrisonOkason MorrisonAlexandra OrtizAlexandra Ortiz

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

OverviewOverview Background Background

Analyzed PartsAnalyzed Parts

Pro/Engineering 3-D PicturesPro/Engineering 3-D Pictures

Finite Element AnalysisFinite Element Analysis

ChallengesChallenges

ImprovementsImprovements

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

BackgroundBackground Analyze Collector Edition Chevy Impala to Analyze Collector Edition Chevy Impala to

determine the failure of different partsdetermine the failure of different parts

Disassemble original Chevy Impala to Disassemble original Chevy Impala to measure individual partsmeasure individual parts

Create 3-D simplified models utilizing Create 3-D simplified models utilizing Pro/Engineering Pro/Engineering

Perform Finite Element Analysis to find:Perform Finite Element Analysis to find:

– Maximum Von Mises StressMaximum Von Mises Stress

– Maximum Displacement MagnitudeMaximum Displacement Magnitude

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Pro/engineering 3-D PicturesPro/engineering 3-D Pictures

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Pro/engineering 3-D Pictures (Cont.)Pro/engineering 3-D Pictures (Cont.)

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Pro/engineering 3-D Pictures (Cont.)Pro/engineering 3-D Pictures (Cont.)

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Pro/engineering 3-D Pictures (Cont.)Pro/engineering 3-D Pictures (Cont.)

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Pro/engineering 3-D Pictures (Cont.)Pro/engineering 3-D Pictures (Cont.)

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Finite Element AnalysisFinite Element Analysis

LoadsLoads– 50lb50lb

MaterialsMaterials– PolyethylenePolyethylene

0.05

Seat Sensitivity Study:Seat Sensitivity Study:

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Finite Element Analysis (cont.)Finite Element Analysis (cont.)Seat Von Mises Stress:Seat Von Mises Stress:

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Finite Element Analysis (cont.)Finite Element Analysis (cont.)Seat Deformation:Seat Deformation:

0.00658 in

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Finite Element Analysis (Cont.)Finite Element Analysis (Cont.)

MaterialMaterial– Die Cast ZincDie Cast Zinc

LoadLoad– 50lb50lb

Mirror Sensitivity Analysis:Mirror Sensitivity Analysis:

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Finite Element Analysis (Cont.)Finite Element Analysis (Cont.)Mirror Von Mises Stress:Mirror Von Mises Stress:

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Finite Element Analysis (Cont.)Finite Element Analysis (Cont.)Mirror Deformation:Mirror Deformation:

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Finite Element Analysis (Cont.)Finite Element Analysis (Cont.)

MaterialMaterial– PolyethylenePolyethylene

LoadLoad– 50lb50lb

Steering Wheel Sensitivity Study:Steering Wheel Sensitivity Study:

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Finite Element Analysis (Cont.)Finite Element Analysis (Cont.)Steering Wheel Von Mises Stress:Steering Wheel Von Mises Stress:

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Finite Element Analysis (Cont.)Finite Element Analysis (Cont.)Steering Wheel Deformation:Steering Wheel Deformation:

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Finite Element Analysis (Cont.)Finite Element Analysis (Cont.)Strength Comparison Strength Comparison

0

10000

20000

30000

40000

50000

60000

70000

Seat ST.Wheel

Mirror

Parts

Str

es

s (

ps

i) UltimateTensileStrengthVon Mises

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

Challenges Challenges

Small DimensionSmall Dimension Finite Element Analysis resulted in Finite Element Analysis resulted in

fatal error for assemble partsfatal error for assemble parts Finite Element Analysis would not Finite Element Analysis would not

convergeconverge Redefine MeshesRedefine Meshes

ME 371: Computer Aided DesignME 371: Computer Aided DesignThe City College of New York The City College of New York

Department of Mechanical EngineeringDepartment of Mechanical Engineering

ImprovementsImprovements

Change MaterialChange Material Modify DesignModify Design Change Size of Failed partChange Size of Failed part