Engr Mech Dynamics
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Transcript of Engr Mech Dynamics
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CECS 1
Engineering Mechanics
The Basic Sequence
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CECS 2
Kinematics
Engineering Mechanics
Newtonian Mechanics
Kinetics
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CECS 3
Kinematics
Kinematics - the geometry of motion
Engineering Mechanics
Kinematics
Newtonian Mechanics
Kinetics
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CECS 4
Kinematics
Kinetics (also Dynamics) - the study of forces causing
or resulting from a change
in motion
Kinematics
Kinematics - the geometry of motion
Engineering Mechanics
Kinematics
Newtonian Mechanics
Kinetics
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CECS 5
Kinematics
Non-accelerating(Statics)
Accelerating(Dynamics)
Engineering Mechanics
Kinematics
Newtonian Mechanics
Kinetics
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CECS 6
Kinematics
Single particle
System of particles
Rigid body/bodies
Deformable body
/bodies
Engineering Mechanics
Kinematics
Newtonian Mechanics
Kinetics
Single particle
System of particlesRigid body/bodies
Deformable body
Accelerating(Dynamics)
/bodies
Single particle
System of particlesRigid body/bodies
Deformable body
/bodies
Non-accelerating(Statics)
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CECS 7
Kinematics
Single particle
System of particles
Rigid body/bodies
Deformable body
/bodies
Engineering Mechanics
Kinematics
Newtonian Mechanics
Kinetics
Single particle
System of particles
Rigid body/bodiesDeformable body
Accelerating(Dynamics)
/bodies
Single particle
System of particles
Rigid body/bodiesDeformable body
/bodies
Non-accelerating(Statics)
ENGR 2301
Statics
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CECS 8
Kinematics KineticsKinetics
Single particle
System of particles
Rigid body/bodies
Deformable body/bodies
Engineering Mechanics
Kinematics
Newtonian Mechanics
Single particle
System of particles
Rigid body/bodies
Deformable body
Accelerating(Dynamics)
/bodies
Single particle
System of particles
Rigid body/bodies
Deformable body/bodies
Non-accelerating(Statics)
ENGR 2302
Dynamics
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CECS 9
Kinematics KineticsKinetics
/bodies
Engineering Mechanics
Kinematics
Newtonian Mechanics
Single particle
System of particles
Rigid body/bodies
Deformable body
Accelerating(Dynamics)
/bodies
Single particle
System of particles
Rigid body/bodies
Deformable body/bodies
Non-accelerating(Statics)
ENGR 3306
Mech. of Materials
Single particle
System of particles
Rigid body/bodies
Deformable body
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CECS 10
Engineering Mechanics
Course Sequence:
ENGR 2301
Statics
ENGR 2302
Dynamics
MENG 3306
Mechanics of
Materials
Kinetics ofnon-accelerating
particles, systems of
particles, and rigid bodies
Kinematics and kinetics of
acceleratingparticles,
systems of particles, and
rigid bodies
Statics, kinematics of
deformable bodies
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CECS 11
ENGR 2302 Dynamics
Catalog description
Analysis of the kinematics and kinetics of particles,
systems of particles, and rigid bodies. Three hours of
lecture per week.
Prerequisites
ENGR2301, MATH 2414
Text
Engineering Mechanics: Statics & Dynamics, 11th
EditionbyR.C. Hibbeler. Published by Prentice Hall, Upper
Saddle River, NJ, ISBN0-13-221509-8, 2007
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CECS 12
ENGR 2302 Topics Covered
Kinematics of particles Rectilinear and curvilinear motion
Relative motion.
Kinetics of particles
Newtons second law Work and kinetic energy; potential energy
Impulse and momentum methods.
Kinematics of rigid bodies Planar and three-dimensional.
Kinetics of rigid bodies Planar and (some) three-dimensional
Newtons second law
Work and kinetic energy; potential energy
Impulse and momentum methods.
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CECS 13
ENGR 2302 Course Objectives
By the end of this course students will be able to:
Set up and solve particle kinematics problems using rectilinearand curvilinear, planar and three-dimensional, coordinatesystems.
Set up and solve kinetics of particles problems, planar and three-dimensional, using Newtons second law, work and energy, andimpulse and momentum methods.
Set up and solve kinematics of rigid bodies problems in planarand (some) three-dimensional coordinate systems.
Set up and solve kinetics of rigid bodies problems usingNewtons second law, work and energy, and impulse andmomentum methods.
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CECS 14
ENGR 2302 Grading
COURSE GRADING
3 hour quizzes @ 25
points each75 points
Final exam 25 points
Homework/In-Class
performance
10 points
Semester Grade = (your total points/110) x 100
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CECS 15
Why Take This Course? Whats Next?
Where will I use this material?
MEs
Fluid Dynamics (MENG 3310)
Dynamics of Machinery (MENG 3303)
Mechanical Systems Design (MENG 3309)
Tech electives such as Vibrations (MENG 4317)
FE exam
CEs
Fluid Dynamics (MENG 3310)
Tech electives
FE exam
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CECS 16
End
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CECS 17
ENGR 2301/2302 vs. MENG 3306
In Statics/Dynamics: RIGID bodies
Translate
Rotate
Remain fixed
In Mech. of Matls: DEFORMABLEbodies
Stretch
Bend Twist
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CECS 18
ENGR 2301/2302 vs. MENG 3306
In Statics/Dynamics: Interested in Forces and
moments EXTERNAL to the body
In Mech. of Matls: Interested in INTERNAL
FORCES/ MOMENTSresulting from external
forces/moments
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CECS 19
ENGR 2301/2302 vs. MENG 3306
First steps in problem solving similar for both
Statics/Dynamics and Mechanics of
Materials:
Draw a FREE BODY DIAGRAM
Solve for unknown external forces and moments
Fx = 0, Fy = 0, MA = 0
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CECS 20
Similarities with Fluid Mechanics
Both have elegant mathematical theories describing
the media behavior
Theory ofElasticity, Navier-Stokes Equations, Continuum
Mechanics Both have commonly used technical or
engineering treatments that mostly predate the
mathematical theories
Beam bending, torsion, column behavior, etc. Bernoulli equations, Pascal equation, pipe friction, etc.
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CECS 21
Similarities with Fluid Mechanics
Early mechanicists developed thesetechnical treatments based on empiricaldata and observations, motivated by need
Euler, Bernoulli, Hooke, St. Venant, Pascal,Timoshenko,
Most have been shown to be special caseswithin the more general theories
Until FEA and otherCFD, most engineersused the technical treatments exclusively
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CECS 22
MENG 3306
Where will I use this material? MENG 3309 Mechanical Systems Design
CENG Structures, Soil Mechanics, Foundations
Senior Design FEA
What Courses Might Follow? Elasticity (The Mathematical Theory of )
Continuum Mechanics
Vibrations ofContinuous Media
Plates and Shells