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![Page 1: Presentation](https://reader035.fdocuments.in/reader035/viewer/2022062614/5464a4adaf7959f22f8b75a6/html5/thumbnails/1.jpg)
MICHAEL FLEMMINGAUGUST 4, 2009
Using a slider crank mechanism to compare simulation abilities of MATLAB and UGS NX
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Introduction
Brief Background of Software and Mechanism
CriteriaComparisonRecommendationsConclusion
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Previous Research
Dynamic Modeling and Identification of a Slider-Crank Mechanism – Ha, Fung, Chen, Hsien
Kinematics of a slider-crank mechanism – Michael Kearny
Applications of Analytical Method and Computer Technique for Solving Problem of Slider-Crank Mechanism – Phan Quang The
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Background - MATLAB
Numerical Analysis SoftwareBase Price: 1,150 USDAdditional Toolboxes
Signal Processing Databases Control Systems Etc.
MATLAB Programming Language
Simulink Toolbox Model-based Design System Linear and Non-linear
Modelling
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Background - NX
CAD/CAM/CAE PLM Software Computer-Aided Design Computer-Aided Manufacturing Computer-Aided Engineering Product Lifecycle Managment
Base Price: 8,700 USD3D environment
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Background - Mechanism
Modified 4 bar mechanism Ground Crank Connecting Rod Slider 3 Revolute Joints 1 Prismatic Joint
1 Linear Degree of FreedomDriven by Crank or SliderMost common use – Internal Combustion
Engine
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Criteria
AccuracyDesign DifficultyModification DifficultyInformationVisualsCost
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Design Process - MATLAB
Simulink Block diagram of kinetic equationsMATLAB M-files
1 driving program 1 animations program
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Design Process - Simulink
Extensive Block Library Continuous Discontinuous Sources Sinks Math Logic Custom Blocks
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Design Process - Simulink
Easily pass information from one equation to another
Divided into subsystems for organization
Create loop equations
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Design Process - NX
Individual Part Files for each componentAssembly file
Parts connected with specific mating conditions
Motion Simulation Each joint and link identified Ground link selected Range of motion determined Driving forces applied
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Comparison - Accuracy
Both models return same resultsSlider travels equal distance in both
directionsVelocity and Acceleration curves match
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0 5 10 15 20 25 30 35 40 45 5015
16
17
18
19
20
21
22
23
24
25Slider Position
Time
mPlots - Position
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0 5 10 15 20 25 30 35 40 45 50-5
-4
-3
-2
-1
0
1
2
3
4
5Slider Velocity
Time
m/sPlots - Velocity
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0 5 10 15 20 25 30 35 40 45 50-5
-4
-3
-2
-1
0
1
2
3
4Slider Acceleration
Time
m/s2
Plots - Acceleration
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Comparison – Design/Modification Difficulty
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Comparison – Available Information
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Comparison - Visuals
MATLAB 2D animation Upgrade to Virtual Reality
Toolbox for 3D animations. 246-page User Manual
NX 3D animation and design Flightpath Lighting Material Environment
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Comparison - Cost
MATLAB Base Price: 1,150 USD Additional Toolboxes: 230 USD
NX Base Price: 8,700 USD Plus Additional Licenses
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Recommendations/Conclusions
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MICHAEL FLEMMINGAUGUST 4, 2009
Using a slider crank mechanism to compare simulation abilities of MATLAB and UGS NX