ME160: Solid Modeling
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ME160: Solid Modeling Jackson Jaworski Office Hours TR: 3:00 – 4:00 p.m. Office: ET 344 Email: [email protected] 4/19/2020 ME160 1
Transcript of ME160: Solid Modeling
ME160: Solid Modeling
Jackson Jaworski
Office Hours
TR: 3:00 – 4:00 p.m.
Office: ET 344
Email: [email protected]
4/19/2020 ME160 1
4/19/2020 ME160 2
Contents in Today’s Class
Project Submission Overview
Reports
Poster
File Submission
CSWA Overview
Thermal Simulations
Flow Simulations
Work on Projects
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Reports
Submit a final technical memo
Cover page is fine but not necessary
Follow standard memo format (posted on website)
This is an academic technical memo
(no jokes, informal slang, or 1st person)
Sample sections could include:
Abstract, Purpose, Introduction, Motivation,
Modeling Strategy, Assembly, Simulations, Results,
Conclusion, Appendices, etc…
Feel free to add more sections as needed!
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Poster
Submit a poster that briefly summarizes your work
Follow the poster template (posted to website)
This is an academic technical poster
(no jokes, informal slang, or 1st person)
Show off simulation/motion results!
This should just be a summary of everything in report
Sample sections could include:
Abstract, Purpose, Introduction, Motivation,
Modeling Strategy, Assembly, Simulations, Results,
Conclusion, etc…
Feel free to add more sections as needed!
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File Submission
Files to include:
All part files
All assembly files
Complete Engineering Drawing Package
Simulations/motion animations
STL File for 3D print
Final Poster file
Final Paper file
Put these into a .zip folder and upload them to
Blackboard.
Due by April 30th at 11:59 p.m.
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Student Overview for the
Certified SolidWorks Associate
(CSWA) Program
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CSWA Certification Program Overview
CSWA Certification
CSWA Competencies
CSWA Preparation
CSWA Exam Day
CSWA Benefits
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CSWA Certification
The CSWA Certification demonstrates your aptitude with
SolidWorks, 3D solid modeling techniques, design concepts
and engineering practices, and commitment to professional
development.
The CSWA Certification requires passing the CSWA Exam. The
CSWA Exam is a comprehensive, on-line, proctored, three hour
test administered by the CSWA Provider.
The CSWA Certification proves to employers that you have the
required skill sets to work in the design and engineering fields.
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CSWA Competencies
• 3D CAD modeling technology
• Parts and Assemblies
• 2D Sketching and Geometry Principles
• Drawing Basics
• Engineering Principles
• Mass Properties
• Materials
• Design Iterations
• Design Process
• Design Intent
• Recognition of industry practices and standards
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CSWA Exam Preparation
Minimum for 45 hours of classroom
instruction in engineering design
3D illustrations with dimensions
2D Drawing views with dimensions
and annotations
Reference Books:
Engineering Drawing, Detailing,
Technical Drafting, Machine Drafting
and Drawing Communication
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CSWA Exam Preparation
Complete the suggested SolidWorks
Tutorials
Utilize SolidWorks Help Topics to
locate information about a particular
function
Complete the “Sample Exam”
questions at www.solidworks.com/cswa
Verify your time to complete the
Sample Exam (~90 min)
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CSWA Exam Breakdown
Category Qty Points Total
Points
Drawing Theory 3 5 15
Basic Part Modeling 2 15 30
Intermediate Part Modeling 2 15 30
Advanced Part Modeling 3 15 45
Assembly Modeling 4 30 120
Total 240
Passing: 165 Points (or greater)
Time allotted: Three hours: (180 minutes)
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CSWA Exam Day: Requirements
Requirements:
A computer with SolidWorks installed on it in a secure environment
An internet connection
A valid email address
A voucher ID code (Provided by your CSWA Provider)
CSWA Provider Institution
Accredited, degree granting educational institution, secondary or post secondary level
SolidWorks subscription
Approved CSWA Provider application www.solidworks.com/cswa
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Exam Day: Download the TesterPro Client
Login to the Tangix_TesterPRO site
(http://www.virtualtester.com/solidworks).
Click Download TesterPRO Client link to
start the exam process.
Click the Run button.
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Exam Day: Run the Tester software
Click Run to run the Tangix
Tester software.
Read the Tangix Software
License Agreement.
Click I Agree.
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CSWA Exam Day: Select Language
Select your language for the Tangix tester:
English
French
German
Portuguese
Spanish
Italian
Japanese
Chinese Simplified
Chinese Traditional
Korean
Click Continue.
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CSWA Exam Day: Your Information
Students can not use notes,
books, calculators, PDA’s,
cell phones, or materials not
authorized by a SolidWorks
Certified Provider or DS
SolidWorks Corp. during the
exam.
Enter your personal
information.
Click Continue.
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CSWA Exam Day: Login and Voucher
Number
Write down your login email and
password.
Click Yes, I have written my
password down.
Enter your Voucher number
provided by your instructor.
Click Submit.
Click Continue.
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CSWA Exam Day: Select Language for
Exam
Select language for the
exam.
Read the Exam Publisher
license agreement.
Click I Agree.
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CSWA Exam Day: Start Exam
Read the Examination
Information.
Click Start
Examination.
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CSWA Exam Day: Answering questions
Read the question.
Click on views for
more detail.
Create the model in
SolidWorks.
Select the best answer
or fill in the answer
field.
Click Next Question
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CSWA Exam Day: Answering questions
Read the question.
Click on views for more
detail.
Download and unzip the
assembly models and save
them locally.
Create the final assembly.
Select the best answer or fill
in the answer field.
Click Next Question.
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CSWA Exam Day: Answering questions
Answer multiple choice
questions for the Drawing
Theory and Analysis
Theory questions.
Use Help for assistance.
Note: Click the Reset
Question button to clear a
selected answer.
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CSWA Exam Day: Tips
Read directions thoroughly. The complete question requires you to
scroll down.
Review all drawing views.
Know how to apply materials and calculate material properties
(mass, volume, moment of inertia, etc).
Enter dimensions and annotations precisely.
Know how to create a Reference Coordinate System.
Use SolidWorks Help and COSMOSXpress / SimulationXpress
Help for theory questions.
Work quickly and accurately. It is a timed exam.
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CSWA Exam Day: Show Summary
Click Show Summary button to
review the Answered questions.
Click Back to Question to
return to exam.
Click End Examination when
complete.
Click Yes to exit.
Read your score.
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CSWA Exam Day: Your account
If you pass, return to the Virtual
Tester,
www.virtualtester.com/SolidWork
s
Login to your account.
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CSWA Exam Day: Print your certificate
Select the CSWA Exam.
Print your CSWA certificate.
Record the Certificate ID for your
resume.
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CSWA Exam Benefits
• Formal recognition of achievement
• Professional credibility with proven
engineering competencies
• Membership to the CSWA community
• Online certificate access
• Success in the first level of the SolidWorks
Certification program
• Professional, Sheet Metal, Surfacing,
Finite Element Analysis
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Thank You
www.solidworks.com/cswa
Please get completed by May 3 at 11:59 p.m.
If you’re using Fusion360 please complete the modeling exam on
Blackboard by May 3 at 11:59 p.m.
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Thermal Simulations
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Background – Conduction
Heat Transfer
Conduction Convection Radiation
Conduction is the transfer of energy from more energetic particles of a
substance to adjacent less energetic particles due to interactions
between these particles.
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Background – Conduction
One-dimensional heat transfer by
conduction as outlined by Fourier’s law
describing the diffusion of energy.
𝑄𝑥 = −𝑘𝐴𝜕𝑇
𝜕𝑥
Fourier’s Law
One-dimensional
Heat flow is significant in one direction
Two-dimensional
Heat flow is significant in two directions
Three-dimensional
Heat flow is significant in three directions
𝑘 ≡ 𝑇ℎ𝑒𝑟𝑚𝑎𝑙 𝐶𝑜𝑛𝑑𝑢𝑐𝑡𝑖𝑣𝑖𝑡𝑦 [ 𝑊 𝑚. 𝐾]
𝐴 ≡ 𝐶𝑟𝑜𝑠𝑠 − 𝑠𝑒𝑐𝑡𝑖𝑜𝑛𝑎𝑙 𝐴𝑟𝑒𝑎 [𝑚2]
𝑄𝑥 ≡ 𝐻𝑒𝑎𝑡 𝑇𝑟𝑎𝑛𝑠𝑓𝑒𝑟 [𝑊]
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Background – Conduction
𝛼 =𝑘
𝜌𝑐𝑝
Thermal Diffusivity
𝛼 ≡ 𝑇ℎ𝑒𝑟𝑚𝑎𝑙 𝐷𝑖𝑓𝑓𝑢𝑠𝑖𝑣𝑖𝑡𝑦 𝑚2 𝑠
𝑘 ≡ 𝑇ℎ𝑒𝑟𝑚𝑎𝑙 𝐶𝑜𝑛𝑑𝑢𝑐𝑡𝑖𝑣𝑖𝑡𝑦 𝑊 𝑚. 𝐾
𝜌 ≡ 𝐷𝑒𝑛𝑠𝑖𝑡𝑦 [ 𝑘𝑔 𝑚3]
𝑐𝑝 ≡ 𝑆𝑝𝑒𝑐𝑖𝑓𝑖𝑐 𝐻𝑒𝑎𝑡 𝐽 𝑘𝑔. 𝐾
Thermal Conductivity
Measure of how easily energy is diffused,
moved, within a material. Useful when trying to
design the rate at which an object needs to be
cooled.
Thermal Diffusivity
Measures the ability of a material to store or
release energy.
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Background – Conduction
Differential control volume from a larger
part of a cylinder. The volume is taken
as (r 𝑑𝑟 𝑑𝜃 𝑑𝑧) for conduction in the
cylindrical coordinate system (𝑟, 𝜃, 𝑧).
𝐸𝑖𝑛 + 𝐸𝑔𝑒𝑛 − 𝐸𝑜𝑢𝑡 = Δ 𝐸𝑠𝑡
Energy Balance
𝐸𝑖𝑛 ≡ 𝐸𝑛𝑒𝑟𝑔𝑦 𝑖𝑛𝑡𝑜 𝑠𝑦𝑠𝑡𝑒𝑚
𝐸𝑔𝑒𝑛 ≡ 𝐸𝑛𝑒𝑟𝑔𝑦 𝑔𝑒𝑛𝑒𝑟𝑎𝑡𝑒𝑑 𝑏𝑦 𝑠𝑦𝑠𝑡𝑒𝑚
𝐸𝑜𝑢𝑡 ≡ 𝐸𝑛𝑒𝑟𝑔𝑦 𝑜𝑢𝑡 𝑜𝑓 𝑠𝑦𝑠𝑡𝑒𝑚
Δ 𝐸𝑠𝑡 ≡ 𝐸𝑛𝑒𝑟𝑔𝑦 𝑠𝑡𝑜𝑟𝑒𝑑 𝑏𝑦 𝑠𝑦𝑠𝑡𝑒𝑚
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Background – Conduction
Assumptions:
The medium is of constant material properties
No heat generation
Heat flows in two-dimensions under transient conditions T(r,z,t)
1
𝑟
𝜕
𝜕𝑟𝑟
𝜕𝑇
𝜕𝑟+
𝜕2𝑇
𝜕𝑧2 =1
𝛼
𝜕𝑇
𝜕𝑡
The Heat Diffusion Equation
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Background – Conduction
Steady-state vs Transient
Looking at a problem once the
solution has reached a particular
consistent point. Typically occurs
after all the “excitement” and time
does not matter.
Looking at the beginning of a
problem when the solution will
vary with time. Occurs during
the “exciting” period and time
does matter.
Transient
Steady-state
y
t
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Background – Conduction
Types of Boundary Conditions
Fixed or constant temperature: 𝑇 𝑥, 𝑡 = 𝑇𝑠
Heat flux at surface:−𝑘
𝜕𝑇
𝜕𝑥𝑥=0
= 𝑞𝑥′′
Adiabatic Surface: −𝑘
𝜕𝑇
𝜕𝑥𝑥=0
= 0
Convection at surface:−𝑘
𝜕𝑇
𝜕𝑥𝑥=0
= ℎ 𝑇∞ − 𝑇 0, 𝑡
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Exercise I
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Exercise I
2D Thermal Simulation
Use Adiabatic boundary condition
Use Temperature boundary condition
Use Convection boundary condition
Steady-state analysis
Transient analysis
Tutorial from Slides
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Step 1
Create the following geometry, thickness doesn’t matter yet
Select the mid-plane at the section plane with a thickness of 0.01m
0.1m
0.1m
Material:
6061 Alloy
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Step 2
Apply the following boundary conditions
T = 100C T = 100C
T∞ = 50C
h = 450 W/(m^2.K)
Adiabatic
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Step 3
Steady-state results
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Step 4
Change the simulation to Transient
Apply an initial temperature
T = 100C T = 100C
T∞ = 50C
h = 450 W/(m^2.K)
Adiabatic
Ti = 80C
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Transient Results
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Flow Simulations
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Extra Exercise
Use simulation tools to run elementary
analysis.
Flow Simulations
Not required!!!
Tutorial within SolidWorks
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Step 1
Ensure that
Simulation under
add-on’s is disabled.
Under the Menu Bar.
Select Help.
SolidWorks Tutorials.
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Step 2
On the pop-up Menu
Select Design Evaluation.
Then select SolidWorks
FloXpress
Follow the tutorial
Show me when completed
4/19/2020 ME160 49
Work on Projects
