This document contains details about an engineering design and CAD modeling course taught by Dr. Vi Nguyen at the Vietnamese-German University. The course will cover topics like the engineering design process, CAD modeling, CAM, and CAE tools over 8 sessions from July 30th to August 27th. Sessions will be split between on-site and online meetings. Students will complete assignments, an exam, and a final project. The course will use textbooks on engineering design, technical drawing, CAD/CAM/CAE systems, and NX modeling software.

1. VGU
Vietnamese-German university
Engineering Design and
CAD Modeling
Instructor: Vi Nguyen, PhD
Lecturer in Sustainable Product Development
Global Production Engineering Management
(GPE(M))
Faculty of Engineering
Vietnamese-German University

2. Tentative program
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Vi Nguyen
Week Time Sat(30/07) Sun(31/07) Sat(06/08) Sun(07/08) Sat(13/08) Sun(14/08) Sat(20/08) Sun(21/08) Sat(27/08)
30.07
-
27.08
08:45-09:30 BD-ONSITE BD-ONSITE BD-ONSITE ONlLINE BD-ONSITE ONlLINE BD-ONSITE ONlLINE BD-ONSITE - Exam
09:30-10:15 BD-ONSITE BD-ONSITE BD-ONSITE ONlLINE BD-ONSITE ONlLINE BD-ONSITE ONlLINE BD-ONSITE - Exam
10:15-10:30
10:30-11:15 BD-ONSITE BD-ONSITE BD-ONSITE ONlLINE BD-ONSITE ONlLINE BD-ONSITE ONlLINE BD-ONSITE - Exam
11:15-12:00 BD-ONSITE BD-ONSITE BD-ONSITE ONlLINE BD-ONSITE ONlLINE BD-ONSITE ONlLINE BD-ONSITE - Exam
12:00-13:00
13:00-13:45 BD-ONSITE BD-ONSITE BD-ONSITE PROJECT BD-ONSITE PROJECT BD-ONSITE PROJECT BD-ONSITE -Project presentation
13:45-14:30 BD-ONSITE BD-ONSITE BD-ONSITE PROJECT BD-ONSITE PROJECT BD-ONSITE PROJECT BD-ONSITE -Project presentation
14:30-14:45
14:45-15:30 BD-ONSITE BD-ONSITE BD-ONSITE PROJECT BD-ONSITE PROJECT BD-ONSITE PROJECT BD-ONSITE -Project presentation
15:30-16:15 BD-ONSITE BD-ONSITE BD-ONSITE PROJECT BD-ONSITE PROJECT BD-ONSITE PROJECT BD-ONSITE -Project presentation
Computer room: B303
E-Mail: vi.nh@vgu.edu.vn
Office: B109

3. Deliverables & grading
How to pass the lecture ED-CAD
Grade of the examination and every project and homework must be better than 4.0
Weighting factor:
GPEM 2021
Assignment: 25%
Exam: 35%
Project: 40%
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4. Books
Engineering design
George E.Dieter, Linda C.Schmitdt: Engineering Design. Fifth
edition, Mc Graw Hill. (Textbook)
Karl T. Ulrich and Steven D. Eppinger: Product Design and
Development. 5th edition, Irwin McGraw-Hill, 2012
Machine elements
Hamrock, Bernard J.: Fundamentals of Machine Elements. McGraw
Hill Book Co
Technical drawings
Simmonds, C. H.: Manual of Engineering Drawing: Technical
Product Specification and Documentation to British and
International Standards. Elsevier / Butterworth-Heinemann.
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5. Books
Kunwoo Lee, Principles of CAD/CAM/CAE Systems, Addison- Wesley
Longman, 1999
NX 10 Tutorial: Online Instructor
Ming C. Leu. Amir Ghazanfari. Krishna Kola, NX10 for Engineering Design,
Missouri University of Science and Technology
P. Goncharov, I. Artamonov, T. Khalitov, Engineering Analysis With NX
Advanced Simulation, Siemens
100 CAD Exercises Beginners guide by 12CAD.com
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6. VGU
Vietnamese-German university
Engineering Design
Process

7. What is Design?
“Design establishes and defines solutions and pertinent structures for
problems not solved before, or new solutions to problems which have
previously been solved in a different way.” 1
• Design is an essential element of Engineering
• Design may or may not involved invention
• The ability to design is both a science and an art
• Good design requires both analysis and synthesis
1. J. F . Blumrich , Science, vol. 168, pp. 1551–1554 , 1970 . 7
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8. The Four C’s of Design
Creativity
• Requires creation of something that has not existed before or not existed in the designer’s mind
before
Complexity
• Requires decisions on many variables and parameters
Choice
• Requires making choices between many possible solutions at all levels, from basic concepts to
smallest detail of shapes
Compromise
• Requires balancing multiple and sometimes conflicting requirements
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9. Type of Designs
• A truly original design involves invention
• This form of design is at the top of the hierarchy
Original design
(innovative design)
• The design team adapts a known solution to satisfy a
different need to produce a novel application
Adaptive design
• Engineering design is employed to improve an existing
design
• Redesign is accomplished without any change in the
working principle or concept of the original design
Redesign
• The design task consists of selecting the components
with the needed performance, quality, and cost from
the catalogs of potential vendors
Selection design
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10. Consideration of Good Design
• Achievement of Performance Requirements
• Functional performance
• Complementary performance (life of design, robustness, reliability, ease,
economy, safety of maintenance)
• Total Life Cycle
Material selection, productivity, durability
• Regulatory and Social Issues
ASTM, ASME standards, codes of ethics, EPA requirements, etc.
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11. The Design Process- A Simplified Integration Model
Go
to
The
next
step
Design Operation Outcome
Specific
information
Evaluation
Yes
No
Feedback loop
General information
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12. What influences Product Cost?
100
80
60
40
20
Percent
Design
Overhead
Labor
Materials
Product Cost Influence on Product Cost
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13. Description of Design Process
Conceptual Design Embodiment Design Detail Design
Planning
for MFG
Planning
for Retir.
Planning
for Use
Planning
for Distr.
Define
Problem
Gather
information
Concept
Generation
Evaluation
of
concepts
Product
Architecture
Config.
Design
Parametric
Design
Drwgs
&
Specification
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14. The Design Engineer’s
Professional Responsibilities
➢ Understand the problem
➢ Identify the known
➢ Identify the unknown and formulate the solution strategy
➢ State all assumptions and decisions
➢ Analyze the problem.
➢ Evaluate your solution
➢ Present your solution.
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15. The Product Development and CAD/CAM
➢Today’s industries cannot survive worldwide competition unless they introduce
new products with better quality, at lower cost, and with shorter lead time.
➢Computer-aided design (CAD), computer-aided manufacturing (CAM), and
computer-aided engineering (CAE) are technologies used for these purposes during
the product cycle.
➢The product cycle is composed of two main processes: The design process and the
manufacturing process
Source: Kunwoo Lee, Principles of CAD/CAM/CAE Systems, Addison- Wesley Longman, 1999
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16. Product Cycle
The Design Process
Synthesis
Analysis The CAD Process
The CAM Process
Design
needs
Design specifications
Feasibility study with
collecting design
information
Design conceptualization
Analysis
model
Design
Design analysis
optimization
Design
evaluation
Design documentation
and communication
Process
planning
Order materials
Design and
procurement of
new tools
Production
planning
NC, CNC, DNC
programming
Production
Quality control Packaging
Marketing
Shipping
The Manufacturing Process
Source: Kunwoo Lee, Principles of CAD/CAM/CAE Systems, Addison- Wesley Longman, 1999 16
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17. Definition of CAD, CAM and CAE
CAD
Computer-aided design
(CAD) is the
technology concerned
with the use of
computer systems to
assist the creation,
modification, analysis,
and optimization of a
design
( Groover and Zimmers
1984)
.
CAE
Computer-aided
engineering (CAE) is a
technology concerned
with the use of
computer systems to
analyze CAD geometry,
allowing the designer to
simulate and study how
the product will behave
so that the design can be
refined and optimized.
CAM
Computer-aided
manufacturing (CAM)
is the technology
concern with the use of
computer to plan,
manage, and control
manufacturing
operations through
either direct or indirect
computer interface with
the plan’s production
resources.
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18. Definitions of CAD/CAM/CAE Tools
Based on Their Constituents
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Computer
graphics concepts
Design tools
Geometric
modeling
CAD
tools
Networking
concepts
Mfg tools
CAD
CAM
tools
Post-
processing
Analysis
solver
Pre-
processing
CAE
tools

19. Definitions of CAD/CAM/CAE Tools
Based on Their Constituents
Computer
graphics
concepts
Mfg tools
Networking
Design tools
Geometric
modeling
Analysis
Optimization
Tools
CAD/CAM
/CAE tools
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20. Integrated CAD/CAE/CAM
through the data base
(which is the objective of CIM)
Source: Kunwoo Lee, Principles of CAD/CAM/CAE Systems, Addison- Wesley Longman, 1999
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21. Using CAD/CAM/CAE systems
for Product Development – A Practical Example
➢Assume that our task is to design and
manufacture the front piece of a cellular
phone. With CAD system, we can carry
out the styling and conceptual design as
shown in the figure.
Solid model of example part
Source: Kunwoo Lee, Principles of CAD/CAM/CAE Systems,
Addison- Wesley Longman, 1999
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22. Finite element analysis model of example part
Finite element meshes Load condition: case 1 Load condition: case 2
➢ The next step n the product cycle would be the design analysis, for which the analysis model is generated by CAE
preprocessor
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23. Stress distribution on example part
Result for case1 Result for case2
Source: Kunwoo Lee, Principles of CAD/CAM/CAE Systems, Addison- Wesley Longman, 1999
➢ Running a finite-element analysis on the finite-element model, we can verify weather the designed cover is strong
enough
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24. Physical prototype of example part
➢ At this stage, we can make a physical prototype, using rapid prototyping system for a design evaluation
Source: Kunwoo Lee, Principles of CAD/CAM/CAE Systems, Addison- Wesley Longman, 1999 24
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25. Part drawing of example part
➢ Once the part design has been approved, a part drawing can be generated if needed
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26. Some Integrated CAD/CAE/CAM Systems
Professional CAD/CAE/CAM Tools
➢ CATIA (Dassault Systems - IBM)
➢ Unigraphics NX (Electronic Data Systems Corp - EDS)
➢ I-DEAS (EDS)
➢ Pro/ENGINEER (PTC)
➢ …...
Other CAD and Graphics Packages
➢ AutoCAD Mechanical Desktop
➢ SolidWorks (CATIA)
➢ Solid Edge (EDS)
➢ MicroStation
➢ Intergraph
➢ ….
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27. Unigraphics NX
NX, formerly known as Unigraphics NX or usually just UG, is an advance high-end
CAD/CAM/CAE software package originally developed by Unigraphics, but since 2007 by
Siemens PLM Software.
It is used for:
➢ Design (CAD): Parametric solid modeling, reverse engineering, engineering drawing
(drafting), sheet metal design, assembly modeling, etc.
➢ Engineering analysis (CAE): FEM, Kinermatics, Computational fluid dynamics (CFD) and
thermal analysis
➢ Manufacturing finished design by using included machining modules: Numerical control
(NC) programming
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28. Engineering Design Process
PROJEC
T
Define
Concept generation,
concept evaluation
Embodiment design
Discussion
Presentation of results
Detail Design
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29. The first three phases of
the Engineering Design Process
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Conceptual Design
Define
Problem
Problem statement
Benchmarking
QFD
PDS
Gather information
Internet
Patents
Trade
Literature
Concept Generation
Brainstorming
Functional
Decomposition
Morphological
Chart
Evaluation of concepts
Pugh concept selection
Decision matrices
Detail Design
Detail drawings &
Specifications
Product Architecture
Arrangement of
physical elements to
carry out function
Config. Design
Prelim, selection matls.
& mfg.
Modeling/sizing of
parts
Parametric Design
Robust design
Tolerances
Final dimen.
DFM
Detail Design
Detail drawings &
Specifications
Product Architecture
Arrangement of
physical elements to
carry out function
Config. Design
Prelim, selection matls.
& mfg.
Modeling/sizing of
parts
Parametric Design
Robust design
Tolerances
Final dimen.
DFM
Embodiment Design
Vi Nguyen

30. VGU
Vietnamese-German university
Thank You.
Vi Nguyen
+84-(0) 274-2220990, Ext. 136
vi.nh@ngu.edu.vn
www.vgu.edu.vn