environment problem related to improper disposal of phone
1.become garbage in landfill
2.phones contain some toxic material which will enter our environment
3.highlight the importance of proper disposal of phone
http:/hk.myblog.yahoo.com/jw!p7lzXESVAhL4oJ
MECH103 Mechanisms and Dynamics of Machinery
Chapter 10 Introduction to Mechanism Synthesis
1
Mechanism synthesis
Qualitative synthesis: to create the potential solutions
Some linkage design in the absence of a well-defined
algorithm that predicts the so
MECH 103
Review of Dynamics and
Mechanisms of Machinery
Goal
1. learn how to analyze and to predict the
motion of machines (Force, Motion)
2. learn how to design (synthesize) mechanisms,
esp. 4-bar linkage (a paradigm)
(Geometry, Motion)
1
Summary of Cha
MECH103 Mechanisms and Dynamics of Machinery
Chapter 9 INTRODUCTION TO MECHANISMS
POSITION ANALYSIS
http:/www.designofmachinery.com/
1
Textbook: Chap 1, 2, 4
Engineering Design
Definition:
The process of applying the various
techniques and scientific prin
Mech103 Mechanisms and Dynamics of Machinery
Chapter 7 - Two dimensional dynamics of
rigid bodies
Textbook: Chap 18
Chapter 7: 2 dimensional dynamics of rigid bodies
Newtons second law for particle system
d
Fi + Fij = Fi = dt mi v i
i
i, j
i
i
[ Fij (int
MECH103 Mechanisms and Dynamics of Machinery
Chapter 8 Energy and Momentum in
Planar Rigid-Body Dynamics
1
Textbook: Chap 19
Kinetic energy of a system of rigidly connected particles
1
T = mi v i v i
2
dR i
vi = v +
= v + Ri
dt
mR
i
i
=0
= k
: the veloci
Mech103 Mechanisms and Dynamics of Machinery
Chapter 5 Principle of Impulse and Momentum
- How to design safer vehicle
to avoid severe traffic
accident?
-How to evaluate the cause of
the accident? Head Injury
Criterion ~ a2.5 t
- How to design a better go
Mech103 Mechanisms and Dynamics of Machinery
Chapter 6 Planar Kinematics of
Rigid Bodies
Applications:
Design the robotic motions
(inverse kinematics)
Design machines for manufacturing plants
Design various products which have
moving parts (cant be regard
MECH 103
Mechanisms and Dynamics of
Machinery
Chapter 2
Motion of a Point
- Kinematics
1
http:/archives.math.utk.edu/visual.calculus/index.html
Motion = displacement, velocity, acceleration
Position Vector r = r(t)
From a reference point O to the
position
MECH103
Mechanisms & Dynamics of Machinery
Chapter 3
Force, Mass, and Acceleration
1
Chapter 2
(review assoc. with coordinate system selection)
Example
At the instant shown in the figure, cars A and B are traveling
with speeds of 8 m/s and 12 m/s, respect
MECH103 Mechanisms and Dynamics of Machinery
Mechanisms: Introduction to Gear Trains
Jaguar 3.8 Litre, 6 cylinder
Textbook: Chap 9
1
Spur Gear
Axis of the gear
Spur gear: gear with radial teeth parallel to its axis
2
Backlash: the amount of "play" or cle