Midterm Exam
Prepared by Oziel Rios, Ph.D.
for
MECH 3305  ComputerAided Design
March 22, 2012
Name: H
NetImL
You are allowed two, 8.5x11 inch formula sheets (front and back), pencil/ pen
and a calculator. No devices capable of wireless communication are
Class 12
Review for midterm
Class 1
Intro to SolidWorks
Tutorial Parts
In class activity
You can begin with the first section or skip to a
later section to bypass tasks you already know
how to do.
Setting up a new part document
Creating the base featu
Office of Communications
The Hermite Cubic Spline
Oziel Rios, PhD
MECH 3305 ComputerAided Design
create your future
www.utdallas.edu
Design of Curves
In CAD, the computer aids the designer to synthesize the
shape of the curve
Analytic curves are essent
Office of Communications
The Design Process
Oziel Rios, PhD
MECH 3305 ComputerAided Design
create your future
www.utdallas.edu
Why are design problems difficult?
Share past experience from ECS 1200 and MECH 1208.
2
Mechanical Design
In the arts, design
Office of Communications
Overview of Course
Oziel Rios, PhD
MECH 3305 ComputerAided Design
create your future
www.utdallas.edu
Contact Information
2
Pre/CoRequisites
3
Description
4
Description
Similar to lab except focus
on theory as opposed to
applica
Office of Communications
Application of Curves to CAD
Oziel Rios, PhD
MECH 3305 ComputerAided Design
create your future
www.utdallas.edu
Curves
Curve entities are fundamental to any CAD modeling system
They are used to generate sketches which can be op
Office of Communications
Strategies for Assembly Modeling
Oziel Rios, PhD
MECH 3305 ComputerAided Design
create your future
www.utdallas.edu
Objective
Two modeling approaches for assemblies
TopDown
Bottom Up
Constraints to create static and kinemati
Office of Communications
What is a sketch?
Oziel Rios, PhD
MECH 3305 ComputerAided Design
create your future
www.utdallas.edu
Freehand Drawings
In the initial stages of the design process, it is useful to
capture and convey information about the problem
Office of Communications
Spatial Visualization
Oziel Rios, PhD
MECH 3305 ComputerAided Design
create your future
www.utdallas.edu
Spatial Visualization
Spatial visualization is the ability to mentally
manipulate 2D and 3D objects and involves
recognizin
Outline of Topics
Matrices and Vectors
MATLAB Basics
Syntax
Control of Data Flow
Creating Function Files
1
Office of Communications
Computations involving Matrices and Vectors
Oziel Rios, PhD
MECH 3305 ComputerAided Design
create your future
www.utd
Class 3
Design Intent and Sketch
09012015
Content
Recap : Last class extruding a rectangle ,
tutorial 1 ( user interface and simple solid)
Design intent
Customer needs
Knowledge of mechanical components
Free hand sketch/drawing
Computer aided sket
Prepared by Oziel Rios
MECH 3305 CAD
Spring2011
X8 . (March 10, 2011)
Problem 1: 1C) / This exam is closed book and notes but you are
allowed to use the Provided formula sheet. If you
g P1. Ob em 2 , Li Q / have any questions, please ask the instruct
Test 1
MECH 3305  ComputerAided Design (CAD)
Allotted time 1 hour and 30 minutes
March 3, 2016
Name: _
Instructions
There are five problems given in this test. The first four questions are closed book. You are allowed to use
your three page notes (cheat
CAD Tutorial for View Control: Creo 2.0
Topics Covered in this Lesson
1. Setting the Working Directory
2. Opening a Part
3. Spinning a Part
4. Using Standard Views
5. Using Display Modes
6. Viewing Planes and Axes
7. Utilizing the Model Tree
8. Using Mod
MECH 3305: Computer Aided
Design: CAD
Fall 2015
Dr. Yonas Tadesse
Mechanical Engineering Department
The University of Texas at Dallas
1
Course Overview cont
Description:
Lecture course. Course material includes an
introduction to ComputerAided Mechanica
To determine number of dimensions needed to fully define a sketch
1. Determine the total DOF of the geometric entities
2. Determine the DOF removed by constraints
3. Subtract results of (1) and (2) to determine number of dimensions
Entities
Line Segment
C
Assignment 1
Assigned: September 14, 2016
Due: September 21, 2016, to be submitted in class@ 7:00pm
Total points (120)
Problem 1 (20 points)
For the compound gear train shown in Figure 1, determine the pitch diameters d2, d3 and d4 to
achieve a velocity r
Apache Attack Helicopter
Members: Cameron Aminian, Doug Warzon,
Manuel Houlemont, Yahya Murtadha
The Apache helicopter design essentially consists of a body that we will create as one
piece, assembled with all the parts shown in the diagram. Except for th
Solid Modeling
Some of the slides were taken from Dr. Rios ( Courtesy of Dr.
Rios)
Some of the videos are from Toogood Creo Parametric Tutorial
and Multimedia.
Ref. book : Computer Aided Engineering Design, Anupam Saxena
an Birendra Sahay
Some of the vide
Solid Modeling
Some of the slides were taken from Dr. Rios ( Courtesy of Dr.
Rios)
Some of the videos are from Toogood Creo Parametric Tutorial
and Multimedia.
Ref. book : Computer Aided Engineering Design, Anupam Saxena
an Birendra Sahay
Some of the vide
Class 4
Design Intent, Sketch, relations,
Constraints and Degrees of
Freedom
1
Design Intent
2
Previous Class
Before starting the design Free hand
sketching
Motor
Gear 1
Shaft
Gear 2
Example 1
Problem: Suppose we want to design a onestage, simple gear t
MECH 3305: Computer Aided
Design: CAD
Fall 2016
Dr. Yonas Tadesse
Mechanical Engineering Department
The University of Texas at Dallas
1
Course Overview cont
Description:
Lecture course. Course material includes an
introduction to ComputerAided Mechanica
Class 4
Some of the lecture notes are from Dr. Rios
(courtesy of Dr. Rios)
1
Topics
Gear train from last class (last class)
Sketching
Constraints
Sketch dimensions ( weak vs strong)
Parametric Curve and Geometric Entities
Degree of Freedom of a geometric
Solid Modeling
Modeling strategy
How do you model the following object?
You know Extrude , Extrude cut , Hole creation
2
Modeling Approach
2.5D extrusion (protrusion).
2.5D extrusion (cut) to create
holes. Alternatively, add hole
feature.
2.5D extrusion
Class 2
Design Intent and Sketch
Content
Recap : Last class
extruding a rectangle ,
 tutorial 1 ( user interface and simple solid)
Design intent
Customer needs
Knowledge of mechanical components
Free hand sketch/drawing
Computer aided sketch(CAD s
Parametric curves
Class 9
MECH 3305 CAD, Y. Tadesse Fall 2016
Parametric Circles
Circles and circular
arcs = most common
entities
Stored in CAD:
xc R cos(t )
P(t ) yc R sin(t ) , 0 t 2
zc
Radius
Center
WCS
t =pi/2
R
Y
Arc is the same as
circle exce
Pulley Kinematic Assembly and
animation
Fall 2016
Yonas Tadesse
1. Prepare parts
 Bottom up approach
Assembly the base
 Insert the base
 Default constraint to make it ground
 Click the Check mark
Insert L bracket
 Assemble, browse the file Lbracket
