ME 160: Solid Modeling - users.pfw.edu
Transcript of ME 160: Solid Modeling - users.pfw.edu
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ME 160: Solid ModelingLecture 01: Introduction and First Solid Model
Lecture Instructor Lab Instructor
Jackson Jaworski Omar AlGafri
[email protected] [email protected]
MW | 5:00 – 6:00 p.m. MF: 12:00 – 1:00 p.m.
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Overview
• Who are your professors?
• Introduction of course/syllabus
• Overview of SolidWorks
• Creating your first model
• Homework
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Who are your professors?
Jackson Jaworski
Education• Bachelors in Mechanical Engineering – PFW• Masters in Engineering w/ concentration in
Mechanical Engineering – PFW• Applying for Ph.D. programs
Background• Research in heat transfer• Certified SolidWorks Associate• Taught ME160 in spring 2019• Other courses: Engr 127 (lab), Control Systems
Hobbies• Ultimate frisbee & disc golf• Playing saxophone and bass guitar
Omar AlGafri
Education• Bachelors in Mechanical Engineering – AUS• Masters in Engineering w/ concentration in
Mechanical Engineering – PFW
Background• Research in Solid Mechanics and Composites• Teaching ME 293• Experienced engineer in the field
of construction (MEP)• Fundamentals of Engineering Exam NCEES-U.S
Hobbies• Music• Travel and Food
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Student Design Examples
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Student Design Examples
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Personal Design Examples
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Personal Design Examples
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Textbook
SyllabusObjectives
• Learn solid modeling techniques
• Master modeling skills using SolidWorks
• Utilize solid models for advanced engineering design
William E. Howard and Joseph C. Musto, Introduction to Solid Modeling Using
SolidWorks 2019, ISBN-9781260113303, McGraw Hill Higher Education.
(Not required but recommended)
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Grades
SyllabusGrades and Final Exam
In-Class Exercises: 5%
Quizzes: 5%
Homework: 15%
Project: 30%
Midterm Exam: 20%
Final Exam: 25%
Total: 100%
Final Exam
Section 1: May 7 at 6:15 pmSection 2: May 5 at 5:45 pm
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SyllabusCourse Outcomes
• Basic/advanced modeling skills (Today!)
• Create dimensioned drawings
• Illustrate design concepts
• Communicate through technical memos and presentations
• Use SolidWorks simulation and motion studies
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SyllabusCourse Polices
• Do not submit another students electronic files.• Check email and website regularly.• No internet surfing, no music, and no playing games.• Silence cell phone during lecture.• Deadlines:
• Show exercises to instructor BEFORE leaving, no makeups.• Submit quizzes and tests when time has expired, no makeups.• Homework's BEFORE start of next class (-20% per day).
• Students with disabilities should contact the SSD office at Walb 113 (481-6657) for a description of services available.
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SyllabusCourse Topics
• Introduction of SolidWorks (Today!)• Overview of Solid Modeling Techniques• Basic Part Modeling• Part Drawings• Advanced Part Modeling• Parametric Modeling• Basic Assemblies• Advanced Assemblies• Engineering Design Applications
• Static Simulation• Thermal Simulation• Flow Simulation
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Downloading SolidWorks
1. Uninstall any/all previous versions of SolidWorks2. Go to www.solidworks.com/SDK using the SDK-ID: 92018SDK3. Download SolidWorks 2019-20204. During the download, you will receive an email with the 24-character serial
number needed to install and activate the license.
Refer to the handout online for any other questions.
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SolidWorks?
Solidworks
Solid-works
Solid works
Solid Works
SolidWorks
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Solid Modeling in Engineering Design
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Evolution of Mainstream CAD (70’s)?
• Difficult to Visualize• Prone to Errors• Time Consuming to Change• Will the design work?
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UNIX
???***!!!
Evolution of Mainstream CAD (80’s)
• Complex to Use• Expensive to Own• Difficult to Learn• Dedicated Users
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Evolution of Mainstream CAD (90’s - today)
• Powerful• Affordable• Quick to Learn• Easy to Use
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Design Skills
What you Can Learn – I
• 3D Models (part)• Bill of Materials (assembly)• Mechanisms (machine)• Surface Modelling (ergonomics)• Drawings (production
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Simulation Skills
What you Can Learn – II
• Advanced Mechanisms• (Design concept, motion study)• Rendering (visualization)• Animation (communication)
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FEA Skills
What you Can Learn – III
• Static Analysis (Solid Mechanics)• Heat Transfer (Thermal Dynamics)• Buckling (Stability)• Fatigue Analysis (Time Factor)
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FEA (Flow Simulation) Skills
What you Can Learn – IV
• Aerofoil• Pipe Flow• Valve• Electrical Enclosure
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Certified SolidWorks Associate
What you Should Get
• Spring 2019: Over 80% pass rate• Counts for 12.5% of your grade!
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Operators
Constructive Solid Geometry
Union: Combining the sets of points of two discrete solids.
Intersection: Defining the common set of points to be found in both solids.
Difference: Producing the difference of two sets of points (note: Order matters!)
Hint: This will be on a homework, quiz, midterm, and final ☺
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How to Open SolidWorks
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SolidWorks – Getting Started
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Creating a New File
.sldpart.sldasm
.slddrw
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SolidWorks Interface
Command Manager
Head-Up View Toolbar
Feature Manager Design Tree
Status Bar
Task Pane
Menu Bar
Graphics Area
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The SolidWorks Interface (cont.)
• Allows the user to toggle between Sketch tools, Feature tools, Assembly tools, etc…
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The Heads-Up View – Perspective
Angles between faces are equal
Two of the three angles between faces are equal
No angles between faces are equal – Front Face is
emphasized
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The Heads-Up View – Orientation
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The Heads-Up View – Style
Hidden Lines Visible
Hidden Lines Removed
Wireframe
Shaded
Shaded with Edges
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System Options vs Document Options
System Options:Apply to all documents
Document Properties:Apply to current
documents
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Document Options in First Model – 1
• Under Document Properties: Go to Drafting Standardand select ANSI (American National Standards Institute) – Typical for US drawings
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Document Options in First Model – 2
• Under Document Properties: Grid/Snap: Display Grid• This displays a grid when in 2D sketching mode
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Document Options in First Model – 3
❑Under Document Properties: Units: IPS, three decimal places shown for lengths, none for angles
IPS (inches, pounds, seconds) are commonly used in the textbook.
Note: You may change the units at any time and SolidWorks will convert existing dimensions to the new unit system
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Exercise I
• Create the flange shown in the figure on the left.
• Follow the proceeding tutorial or on pg.’s 5-29 in the book.
• When completed, raise hand and the instructor will check exercise.
• Once marked off, you are free to leave, ask questions, and/or work on homework.
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Exercise I
• Be familiar with the SolidWorks part modeling environment
• Use these features:• Extruded Boss/Base• Extruded Cut• Circular Pattern• Fillet• Chamfer
• Learn how to create a new Reference Plane• Learn to consider the Design Intent when
planning a model
New Toys!
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Exercise I – Step 1
• Draw a circle of Ø5.50• Use the Boss-Extrude tool to
extrude the model to a depth of 0.75 along positive Z-axis
Extrude Base
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Exercise I – Step 2
• Sketch a Reference Plane offset from the front plane by 2.25
• Draw a circle of Ø2.75
Construction Plane
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Design intent is the consideration of the end use of a part, and possible changes to the part, when
creating a solid model.
What is Design Intent?
What are some other ways we could have made this part?
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Exercise I – Step 3
• Use the Boss-Extrude tool to extend the model to the next surface• i.e. Up to Next
Extrude Base
How would this have been done differently if we extruded the part from
the top surface?
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Exercise I – Step 4
• Use the Extruded Cut tool to remove part of the model through the entire model of Ø1.50• i.e. Through All
Extruded Cut
How would the other cut through options possibly effect the design intent
of the part?
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Exercise I – Step 5
• Create a Construction Circle of Ø4.25 with the center aligning with the center of the part.
• Create a Construction Line running vertically down the center of the part.
• Where the two meet (notice orange diamond), create a circle of Ø0.50
• Use the Cut-Extrude tool to cut the bolt hole Through All
First Bolt Hole
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SolidWorks Tip: Naming Features
Unnamed Feature Tree Named Feature Tree
Which is easier to understand? Which is easier
to modify if you come back to this part in a few weeks?
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Exercise I – Step 6
• Use the Circular Pattern feature under the Linear Pattern dropdown menu.
Parameters• Select an edge for which to repeat the
pattern around.• Choose how many instances the
pattern needs to be repeated (4).• Equal Spacing should be selected.• Select Bolt Hole as the feature to
pattern.
Circular Hole Pattern
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Exercise I – Step 7❑Use the Fillet tool to create fillets
at specific edges.
Parameters❑Constant size.❑Select edges to fillet.❑Select Tangent propagation❑Select Full Preview❑Radius of 0.250
Fillets
Is it better to create all the fillets at once or as three individual fillets?
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SolidWorks Tip: Fillet and Chamfer
Should you fillet or chamfer every edge in a part because of this?
Fillets and chamfers reduce stress concentrations in a part. A edge has a higher stress concentration then a
fillet or chamfer.
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Exercise I – Step 8• Use the Chamfer tool to create fillets at
specific edges.• Can be found under Fillet tab in the
dropdown menu.
Parameters• Select Angle Distance.• Distance of 0.080• Angle of 45°• Select “Select Through Faces”• Select Tangent Propagation• Select Partial View
Chamfer
Completed!
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Exercise I: Completed
Material: 1023 Carbon Steel Sheet (SS)
What is the mass of the part (lbs)?
6.23 lbs
Congratulations! You have completed your first model in SolidWorks!
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Questions?Homework
Always due a week from when assigned unless told otherwise and due BEFORE the next class.
• Complete HW_01 CAD drawing• Submit on an engineering memo and
answer the following questions.• Review the online questions, not due.
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