Exam (elaborations)
IET 450_ FEA Written Exam (1).
- Course
- Institution
IET 450_ FEA Written Exam (1).
[Show more]
Seller
Follow
denicetho
Content preview
IET 450- Midterm Part 26 Types of Cams - correct answer-Plate or Disc Cam, Translating or Wedge Cam, Cylindrical
Cam, Conical Cam, Face Cam, and Globonical Cam
How many types of cams are there? - correct answer-6
Two types of cam-follower motions? - correct answer-Translating
Oscillating
3 Types of contacts of translating follower? - correct answer-Radial, In-line, and Offset
Name Three types of contacts of oscillating follower? - correct answer-Flat-face, Roller, and
Cylindrical/Spherical-face
Characteristics of constant velocity? - correct answer-Uniform-velocity profile, Straight-line
profile,
Straight line from
zero to end of the rise.
Disadvantages of constant velocity? - correct answer-Infinity acceleration at the beginning
and end,
Consequent large inertia forces at these points,
Inadequate in application of moderate to high velocity,
Result in vibration,noise,high stress level,and wear
Characteristics of modified constant velocity? - correct answer-Avoid infinite acceleration
beginning and end of rise,
Smaller R derives undesirable velocity changes, Bigger R derives gradual
acceleration but higher, velocity during midsections
Disadvantages of modified constant velocity? - correct answer-Not constant velocity
anymore,
Derivative of acceleration (Jerk) is infinite,
Inertia force changes in time (Jerk) cause noise,
shorten life, surface wear, and fatigue of adjacent
Characteristics of Parabolic Motion? - correct answer-A cam mechanism with the basic
curve;The acceleration, is maximum at the
initial position, zero at the mid-position, and negative maximum at the final
position.
Disadvantages of Parabolic Motion? - correct answer-Even though the velocity and
acceleration is finite, the
maximum acceleration is discontinuous at the start and end of
the rise period. Hence the third derivative, jerk, will be infinite at
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller denicetho. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.24. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67474 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now