Topics

Load and Stress Analysis

Mohr’s Circles

Shocks and Impacts

Failure theories

Shafts Design

Power Screws

Welding

Mechanical Springs 

Rolling-Contact Bearings, Lubrication and Journal Bearing

Gears, Spur and Helical Gears, Bevel and Worm Gears

Belts

Power Transmission

Finite-Elements Analysis

The students are expected to master these learning objectives:

• Understand and apply the method of sections to analyze internal forces in beams
• Understand and apply the failure criteria for ductile materials
• Understand the steps involved in designing a shaft using the stress failure criteria
•  Understand the different types of stress involved in dimensioning power screws
• Understand and determine the average shear stress in fillet welds
• Estimate the torsional yield strength of a helical compression spring wire
• Determine a bearing load life based on a rated reliability
• Understand how is the Petroff equation for a journal bearing is derived
• Determine a shaft bearing loads for spur and bevel gears
• Understand how is the Lewis equation for estimating the bending stress in a gear tooth is derived
• Estimate the centrifugal tension force and torque experienced by a transmitting power flat belt
• Understand how can the Finite Element Method be used, and applied for stress analysis in mechanical structural parts
• Practice how to write formal and informal engineering reports
• Experience how can you effectively work as a part of a team

COURSE PRE-REQUISITES

 MENG 3233 Mechanisms & Dynamics of Machines.

OTHER PREREQUISITES

Basic computer skills, MATLAB, SolidWorks, SolidWorks Simulations, MS Excel, hand calculator

Course

Format and Content: This course will be delivered in person at the McCoy School of Engineering. Classes meet MWF for 50 minutes. Lectures will focus on key concepts from the textbook and the solution of selected case problems. Not all material will be covered in class; students are responsible for reviewing the assigned textbook sections independently to strengthen their understanding.

Attendance and Conduct Regular attendance are required and will be recorded each session. Students are expected to act with professionalism and respect at all times. Phones, laptops, and other electronic devices are strictly prohibited under any circumstances.

Disruptive Behaviors: Inappropriate behavior in class such as disruptive talking, sleeping, eating, or drinking are not allowed, working on non-course related tasks, or watching videos on cellphones or laptops will be considerably detrimental to the student’s overall grade. Repeated absences, tardiness, or disruptive conduct may result in withdrawal from the course.

Participation: Active participation in discussions and problem-solving activities is encouraged and will be reflected in the final grade.

Why The Above Expectations Matter: Students are expected to remain attentive. These guidelines are in place to ensure a respectful and focused learning environment where every student can fully benefit from the course.

Exams

There will be two regular exams and a final exam at the end of the semester. Each exam will include the following, a) theoretical questions based on the textbook, designed to assess the students’ ability to independently acquire and understand the course material, b) practical questions aimed at evaluating students’ skills in analyzing, thinking critically, and solving engineering problems. Each exam will cover the course material taught prior to the first exam or between two consecutive exams. All exams will be conducted in class. Solutions must be written on the front side of the engineering paper or blank sheets only; the back side should not be used. Answers should be clearly organized, with proper question numbering, and neatly presented. During the exam, each student may use, 1) a single-page course summary sheet with writing on both sides, 2) a hard copy of the assigned textbook, 3) the instructor notes, and 4) a copy of their homework solutions. No other materials are permitted during the exam. It is mandatory to take the exam on the scheduled date and time. If, for any unexpected or unforeseen reason, a student misses an exam, he/she must provide valid and convincing documentation explaining his/her absence. If the instructor agrees to take the documentation, and depending on his availability, a make-up exam will be prepared and administered on a mutually agreed upon date. The student has to be aware that the make-up exam may differ significantly from the regular exam. During the exam, the use of cell phones or any other electronic devices is strictly prohibited, except for a basic hand-held calculator. All cell phones and electronic devices will be collected at the beginning of the exam and returned at the end.

Homework

Homework assignments will be posted on D2L Dropbox from selected chapters chosen by the instructor. All assignments must be completed using the mandatory homework template, available on D2L. Students are required to submit homework as a single PDF file uploaded to the designated D2L Dropbox. Any other file formats will be dismissed. Each submission must include: 1) the official homework question sheet as a cover page, 2) a clearly organized solutions with proper question numbering, and 3) neatly and legibly written work that follows the template guidelines. Homework is due on the date specified on the assignment sheet. Failure to submit homework will negatively impact the student’s participation/attitude grade. Late submissions will be accepted until the end of the semester but will receive a maximum grade of 50%. Every student must submit their own original work written in their own words. Duplicate, shared, or group submissions are not allowed unless explicitly authorized by the instructor. Certain assignments may require the use of MATLAB software. The homework is graded according the following rubric:

The homework was completed thoroughly, with detailed figures and accurate calculations. The student demonstrated significant personal effort in clearly explaining the solutions and showed creativity and ingenuity in problem-solving. 90%-100%

The homework contains numerous calculations with only a few minor mistakes or omissions. Some details are missing, but the student demonstrated personal effort in explaining and completing the assignments. 80%-89%

The homework is incomplete, with several problems or questions unanswered. Some results are incorrect, and the submission lacks sufficient explanations and detailed calculations. Overall, the work is superficial, and the student did not demonstrate genuine effort to complete the assignment. 70%-79%

The homework is entirely incomplete and poorly presented, with many problems and questions unanswered. Most results are incorrect, and the student did not demonstrate any effort to complete the assignment. The submission also lacks critical details. 50%-69%

Homework not uploaded to D2L. 0%

Lab Reports

In addition to the weekly three-hour lectures, two hours will be dedicated to lab experiments, result analysis, and lab report preparation. Lab reports are based on the material studied in class or presented as a course complement during the lab sessions. Organized and neat lab reports must be submitted on the due date at the beginning of class. Each group of students is responsible for submitting their own report in their own words. A student who was absent during a lab session cannot add their name to that lab group's report. Labs are graded according to the rubric provided in the table below. Students are encouraged to complete their lab work and submit it during the lab session whenever possible. Arriving late to the lab or leaving a lab session without the instructor’s authorization will result in a penalty to the student’s general attitude grade. For detailed lab guidelines, content, scheduling, and policies on late submissions, students should refer to the lab instructor: Dr. Pranaya Pokharel.

Course Grade

Students will be graded individually; no collective grades will be assigned for any of the listed graded items, except for lab work. The final course grade will be based on the scores earned in the three mandatory exams, the average score of homework, the average score of lab reports, and the general student attitude grade. The contributions to the final grade are as follows:

The first exam (10%), the second exam (25%), the third exam (35%), homework average (10%), lab reports average (10%), and class participation, returned assignments’ neatness, student behavior, attitude, and class attendance (10%), for a total of 100%. The overall course average (X) is calculated as follows:

X = 10% Exam 1 + 25% Exam 2 + 35% Final Exam + 10% Homework + 10% Lab Reports + 10% Participation/Behavior/Attendance/Ethics.

The final letter grade for the course is based on the value of X and is determined from the following grade ranges table:

Value Range of X (in %)

Letter Grade

90 ≤ X ≤ 100

A

80 ≤ X < 90

B

70 ≤ X < 80

C

60 ≤ X < 70

D

< 60

F

Class Attendance

The course instructor expects the students to show-up in-person for each class, class attendance will be checked at each session. If the student is missing class continuously, the instructor will drop the student from class and labs for the rest of the semester. Not attending or arriving late repeatedly to scheduled lectures and labs may lead the instructor to drop the student from the course as well.

Exams

You are expected to take the exam on the scheduled date and time it is given. If for any exceptional or unforeseen reason, a student misses an exam, he will be asked to provide a valid and convincing proof on why he missed it. If the instructor accepts the proof and depending on his availability, the instructor will write a make-up exam that will be administered on an agreed date with the student. The make-up exam testing materials could be very different from the regular given exam.

Labs

Arriving late to the lab or quitting the lab session without the instructor authorization will be penalized on the general attitude grade of the student. For lab guidelines, contents, scheduling, and late submissions, the students are referred to the lab instructor: Dr. Pranaya Pokharel.

Exams

You are expected to take the exam on the scheduled date and time it is given. If for any exceptional or unforeseen reason, a student misses an exam, he will be asked to provide a valid and convincing proof on why he missed it. If the instructor accepts the proof and depending on his availability, the instructor will write a make-up exam that will be administered on an agreed date with the student. The make-up exam testing materials could be very different from the regular given exam.

Homework

Homework have to be turned-in on the due date specified on the homework questions sheet. Not turning homework will affect your attitude grade, late homework will be accepted until the end of the semester and graded with a maximum grade of 50%.

Lab Reports

Organized, neat Lab reports must be turned-in on the due date, at the beginning of class. 

Note: You may not submit a paper for a grade in this class that already has been (or will be) submitted for a grade in another course, unless you obtain the explicit written permission of me and the other instructor involved in advance.

Plagiarism is the use of someone else's thoughts, words, ideas, or lines of argument in your own work without appropriate documentation (a parenthetical citation at the end and a listing in "Works Cited")-whether you use that material in a quote, paraphrase, or summary. It is a theft of intellectual property and will not be tolerated, whether intentional or not.

Student Honor Creed

As an MSU Student, I pledge not to lie, cheat, steal, or help anyone else do so."

As students at MSU, we recognize that any great society must be composed of empowered, responsible citizens. We also recognize universities play an important role in helping mold these responsible citizens. We believe students themselves play an important part in developing responsible citizenship by maintaining a community where integrity and honorable character are the norm, not the exception.

Thus, We, the Students of Midwestern State University, resolve to uphold the honor of the University by affirming our commitment to complete academic honesty. We resolve not only to be honest but also to hold our peers accountable for complete honesty in all university matters.

We consider it dishonest to ask for, give, or receive help in examinations or quizzes, to use any unauthorized material in examinations, or to present, as one's own, work or ideas which are not entirely one's own. We recognize that any instructor has the right to expect that all student work is honest, original work. We accept and acknowledge that responsibility for lying, cheating, stealing, plagiarism, and other forms of academic dishonesty fundamentally rests within each individual student.

We expect of ourselves academic integrity, personal professionalism, and ethical character. We appreciate steps taken by University officials to protect the honor of the University against any who would disgrace the MSU student body by violating the spirit of this creed.

Written and adopted by the 2002-2003 MSU Student Senate.

The Americans with Disabilities Act (ADA) is a federal anti-discrimination statute that provides comprehensive civil rights protection for persons with disabilities. Among other things, this legislation requires that all students with disabilities be guaranteed a learning environment that provides for reasonable accommodation of their disabilities. If you believe you have a disability requiring an accommodation, please contact the Disability Support Services in Room 168 of the Clark Student Center, (940) 397-4140.

All instructors in the Department have voicemail in their offices and MSUTexas e-mail addresses. Make sure you add your instructor's phone number and e-mail address to both email and cell phone lists of contacts.

Obligation to Report Sex Discrimination under State and Federal Law

Midwestern State University is committed to providing and strengthening an educational, working, and living environment where students, faculty, staff, and visitors are free from sex discrimination of any kind. State and federal law require University employees to report sex discrimination and sexual misconduct to the University’s Office of Title IX. As a faculty member, I am required to report to the Title IX Coordinator any allegations, personally observed behavior, or other direct or indirect knowledge of conduct that reasonably may constitute sex discrimination or sexual misconduct, which includes sexual assault, sexual harassment, dating violence, or stalking, involving a student or employee. After a report is made, the office of Title IX will reach out to the affected student or employee in an effort to connect such person(s) with resources and options in addressing the allegations made in the report. You are also encouraged to report any incidents to the office of Title IX. You may do so by contacting:

Laura Hetrick

Title IX Coordinator
Sunwatcher Village Clubhouse
940-397-4213

laura.hetrick@msutexas.edu

You may also file an online report 24/7 at Maxient 

Should you wish to visit with someone about your experience in confidence, you may contact the MSU Counseling Center at 940-397-4618. For more information on the University’s policy on Title IX or sexual misconduct, please visit MSU Texas Title IX

Senate Bill 11 passed by the 84th Texas Legislature allows licensed handgun holders to carry concealed handguns on campus, effective August 1, 2016. Areas excluded from concealed carry are appropriately marked, in accordance with state law. For more information regarding campus carry, please refer to the University’s webpage at https://msutexas.edu/campus-carry/rules-policies.

If you have questions or concerns, please contact MSU Chief of Police at police@msutexas.edu.