ME450 –
Dynamic Machine Components (3 Credit Hours)
Course Description: This course covers the selection and application
of machine elements in dynamic systems. Specific components covered include
transmission elements (gears and pulleys), mechanisms, linkages, shafting,
bearing systems, and prime movers.
Course Instructors: This course is typically taught by the following
instructors:
Sample Syllabus: A sample syllabus indicative of that typically used
in the course can be found here.
Pre-Requisite Skills: Students entering this course are expected to
have mastered the following skills:
- ESM 264 - Dynamics
- Draw a free body
diagram (FBD) of both translational and rotational mechanical systems
- Perform vector
summation of forces and moments from the FBD
- Explain and use
Newton's laws of motion for particles and rigid bodies
- Compute relative
velocities and accelerations for translational mechanical systems due to
applied external forces from the governing equations derived from the
Newton's laws of motion
- ME
350 - Static Machine Components
- Determine the stresses
and strains of machine elements including shafts, beams, cylinders, rings
and curved members due to bending, axial and torsional loads
- Compute axial, bending
and torsional displacements of beam and shaft systems with rigid elements
attached
- List the different
modes of failure and explain the causes
- Apply failure theories
(such as maximum normal stress, maximum normal strain, maximum shear
stress and distortion energy) to predict the safety factor or size of a
given structural component subject to static loading and to design
mechanical components to prevent failure
- Apply stress-life
theory to predict fatigue failure and design machine components to
prevent failure due cyclical loading.
- Compute the design
variables of fasteners, screws and welds
Course Objectives: Students who successfully complete this course can
be expected to:
- Compute the gear train ratio
and identify the rotational direction of each gear (e)
- Compute the gear ratio and
design parameters for a compound gear set including planetary and miter
gear systems (e)
- Identify the different kinds
of rolling contact and journal bearings and explain the application modes
of each type (a2)
- Compute reaction loads in a
bearing system and also select bearings for a given application based on
the load rating results (e)
- Explain the working
principles of flexible mechanical elements such as belts and chains, and
their applications to modern powertrain systems and industrial drives (a2)
- Specify flexible mechanical
elements for the design of a mechanical system (c)
- Design a shaft based on
static loading and fatigue analyses (c)
- Explain the working principle
of clutches, brakes, couplings and flywheels, and their applications in
safety concerns of automotive, aerospace and industrial systems (a2)
- Specify clutches, brakes,
couplings and flywheels for a design based on force and temperature
analyses ( c)
- Explain the kinematic
principles of four bar linkages, and determine the motion of each part
(a2)
- Synthesize the rigid
components of a mechanism in terms of design path ( c)
- Calculate the positions,
velocities and accelerations of each point in a four, five or six bar
linkage (e)
- Draw a FBD of each rigid link
in a mechanism, and calculate the reaction forces and mechanical motions
using equations of motion (e)
- Explain the concept of static
and dynamic balancing (a2)
- Calculate the severity of
unbalances by applying dynamic balancing equations (e)
- Calculate the amount of
eccentricity and mass needed to balance a rotating shaft system (e)
- Calculate balancing
parameters for mechanical linkages subject to shaking forces (e)
- Design a people-centered,
contemporary mechanical system in which the components meet certain life,
strength and dynamic response requirements while also addressing human
safety and comfort (c,o)
- Present case study results in
both written and oral forms as part of a team (g,d)
Sample Examinations: Examples of Examinations given in this course
can be found here.
Downstream Users: This course serves as a pre-requisite to the
following courses at The University of Alabama: