ME 314 (Design of Machinery) Class Information

Department of Mechanical Engineering

1. Syllabus and schedule.

A concise syllabus for ME 314 is available for download as a PDF file.

2. Mailing List.

There is a mailing list (listserv) titled ME314-L for this class. You may sign up at any time.

HOW TO SUBSCRIBE TO THE LIST:

Individuals can subscribe to the list by sending a message to: listserv@list.unm.edu

Leave the Subject field blank. In the body of message type (with no other text):

subscribe ME314-L Firstname Lastname

Once the subscribe request is approved, a notification will be emailed to the person.

3. ADAMS.

Material related to the ADAMS computational dynamics package.

3.1 ADAMS Guide.

Here is an ADAMS Guide I'm writing to help you in using ADAMS for this course. As new sections are added I'll note them below.

NOTE: Now updated with disk cam/follower material...

3.2 ADAMS GCON Example (Geneva Stop Mechanism).

Here is an ADAMS "Command File" for the Geneva Stop Mechanism. Please download this file and select "Import a file" in ADAMS. We will work with this mechanism to illustrate the ADAMS "General Constraint" (GCON). You will have to "browse" for this file in the File Import dialog box.

4. MATLAB.

Here is a MATLAB Tutorial prepared by the UNM Math Department (PDF file).

You can also go to the Mathworks' MATLAB Tutorial...click on the "View Tutorial" below the MATLAB Tutorial heading. There is a lot more information here, which may or may not be more helpful.

5. Handouts.

Here are materials I've developed for the class.

Starr Section on Kinematics. This is based on material from the legendary Thomas R. Kane, from the Applied Mechanics Department at Stanford University.
I will update this kinematics document as we proceed through Chapters 3 and 4. I'll go through it in class, so you'll know what has been added.
How to Compute Cam Profiles. Geometry of the cam/follower contact and equations for computing the coordinates of a cam profile.
The MATLAB camprofile.m function. This function will generate the (x,y) coordinates of a cam profile.
The Cam Example we did in class.
The Cam Design MATLAB Script that I used to compute the displacement functions, etc. The output of this script can be used by camprofile.m to generate the [xc, yc] cam profile points that can then be plotted.

6. Homework "hints and answers."

Here are PDF and M-files containing hopefully helpful hints, some answers, and other information for the homework and programming assignments. The MATLAB M-files will not download, but will display so you can "cut and paste" into the MATLAB Editor if you wish.

Chapter 1 Hints. I built a cardboard model for Problem 1.9; also created an ADAMS model. These problems shouldn't be too bad.
Chapter 3 Hints. Problems 3.6 and 3.15 might be a little challenging; I tried to give you some direction. As I make progress on the ADAMS models (particularly constructing link 4 of Problem 3.11) I'll send out email and update my hints.
Chapter 4 Hints. Updated 1915 on Tuesday, 9/29/09. There are now some partial answers, and more suggestions on setting up the problems. I will update these hints with more discussion and some more partial results when I get the problems completed.
Chapter 5 Hints. I've requested that you do several more things on these three problems than the text requires, so please follow my guidelines. Problem 5.7 is a decent amount of work; don't put it off...the Chapter 5 HW is due on Friday, October 30; any ADAMS work you do can be submitted on Monday, November 2. For the ADAMS work: submit screenshots of your cam/follower plus any plots you make.
Chapter 6 (and 10) Hints. These are all text problems, plus the "Starr Problem" of designing a planetary overdrive.
Here's the article on Planetary Gear Trains from Machine Design magazine. That's the method I'll be using in class.
Chapter 14 Hints. Problem 15 hints changed to reflect impending motion caused by M_12. Use the "analytical method" for all three problems (free-body diagrams and force/moment balances).

7. Homework and Programming Solutions.

Here are PDF and M-files containing the entire homework and programming solutions. Again, the PDF files will download, but the MATLAB M-files will appear on the screen; you can then "copy and paste"...

Chapter 1 Solution. Oops, forgot to get this up in a timely manner (currently 1847 MDT 9/8/2009). Sorry.
Chapter 3 Solution. The analytical work and ADAMS plots are here, along with some comments, etc. I think I corrected most of the errors...
Chapter 4 Solution. Errors in Problem 6 corrected, I think.
Chapter 5 Solution. I completely forgot to put this online until 11/16/09. I guess nobody was too concerned. Anyway, Problem 5.7 was somewhat involved; if you had problems perhaps you can follow my reasoning in the solution.
Chapter 6/10 Solution. Also forgot to put this online until the Monday after it was due Friday. Sorry.