Course : Machine Elements Design
- Course Number
- MENG 4134
- Section Number
- 101
- Semester
- Fall 2022
- Location
- McCoy Engineering Hall, MY 136
- Professor
- Dr. Salim Azzouz
- Days & Times
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- Final Exam Day/Time
- Wednesday, December 07, 2022 8:00 am - 10:00 am
- Curriculum Vitae
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Topics
Load and Stress AnalysisMohr’s CirclesFailure theoriesShocks and ImpactsShaftsWeldingPower ScrewsMechanical SpringsGears, Spur and Helical Gears, Bevel and Worm GearsRolling-Contact Bearings, Lubrication and Journal BearingBeltsFinite-Elements AnalysisPower TransmissionThe students are expected to master these learning objectives:
- Explain the method of sections for beams
- Describe the most important failure theories for ductile and brittle materials
- Develop all the steps of the shaft design for stresses method
- Name two major applications of power screws. Explain their mechanics
- Calculate the average shear stress in a butt and fillet welds
- Estimate the torsional yield strength of a helical compression spring wire
- Calculate a bearing load life at rated reliability
- Derive the Petroff’s equation for bearing friction and define the sommerfeld number
- Determine shaft and bearing loads for spur and bevel gears
- Derive the Lewis equation for estimating the bending stress in gear teeth
- Define the flywheel coefficients of speed fluctuation and inertia
- Estimate the centrifugal tension and torque experienced by a transmitting power flat belt
- Use, explain and apply the Finite Element Method for stress analysis in mechanical parts
- Write formal and informal engineering reports
- Work as part of a team
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COURSE PRE-REQUISITES
MENG 3233 Mechanisms & Dynamics of Machines.
OTHER PREREQUISITES
Basic computer skills, SolidWorks, SolidWorks Simulations, MS Excel, hand calculator
Lecture Format
This fall 2020 semester, the fluid mechanics lecture is designed as a hybrid lecture. It means that the lecture is offered simultaneously in two forms: 1) in person lecture (face-to face) in the classroom at the McCoy School of Engineering, and 2) online lecture through Zoom, the web-based video conferencing and meeting application. The lecture consists of a three 50-minutes sessions. The lectures will be spent mostly explaining and discussing concepts presented in the textbook, and solving relevant case problems. The Lectures will not be used to communicate the entire textbook course content and thus, students will have to study a set of course paragraphs specified by the instructor on their own to further their understanding. Student participation in class discussions is highly recommended and rewarded. Due to the COVID-19 pandemic, students who choose to attend the in-person lecture are expressly required to wear a face mask covering the mouth and the upper nose all the time during the lecture. Students are also required to keep their social distancing (6 ft.) while sitting in the class. Please check the following university statement:“During class, students must comply with MSU’s requirement for wearing a face covering” as mandated in the document https://msutexas.edu/return-to-campus/_assets/files/msu-texas-facial-covering-requirement.pdfExams
There will be two regular exams plus a final one at the end of the semester. Each exam will have a set of textbook theoretical questions designed to test the students’ ability to acquire a self-reading knowledge of the taught materials. The exam has also a set of practical questions designed to test the students’ ability to think, analyze, and solve particular engineering problems. Each exam is based on the course materials developed before the first exam or between two consecutive exams. Due to COVID-19 pandemic, all assigned exams will be take home exams. The exams will be posted on D2L on the agreed scheduled dates. Each exam copy has to be uploaded digitally to a D2L Dropbox by the student as one single PDF or Microsoft Word file within a maximum of 24 hours of the exam posting date. The solutions of the exam should be written on engineering paper or blank sheets, organized with the appropriate questions numbering, and neatly written. After 24 hours the D2L Dropbox will be closed and not visible to the students. You are expected to take the exam on the scheduled date and time it is given. No make-up exam will be given at any time during the semester.Homework & Quizzes
Homework will be posted on D2L from a set of chosen chapters by the instructor. The students are required to upload the homework to a D2L Dropbox in PDF or Microsoft Word format. The solutions of the homework should be written using the posted homework template, organized with the appropriate questions numbering, and neatly written. Homework solutions should be submitted with the posted homework questions sheet as a cover page for the whole homework submission. Homework have to be turned in on the due date specified on the homework question sheet. The maximum grade for the submitted homework on the due date is 50%. Late homework will still be accepted till the end of the semester and graded with a maximum grade of 30%. There will be a D2L quiz given for each homework to encourage the students to study the course materials and do the homework by themselves. Quizzes will consist of questions related to those treated in the current homework problems, but not exactly the same. You are expected to take the quizzes on the scheduled dates and times specified by the instructor. No make-up quiz will be given at any time during the semester. Quizzes count for 50% of the homework total grade and should be uploaded to a D2L Dropbox within 24 hours of the quiz posted date. Each student is responsible for submitting his own individual personal homework and quiz copy, written in his own words. No dual or group homework copy is accepted unless specified by the instructor.Lab Reports
Beside the weekly three hours lectures, two hours will be dedicated to lab experiments, result analysis, and lab reports. Lab reports are based on the materials studied in class, or presented during lab sessions. Organized, neat Lab reports must be turned in on the due date, at the beginning of class. Each group of students is responsible for submitting his own lab report in his own words. A student cannot add his name to a student lab group if absent. Labs are graded according to the content listed in the below table. Students are encouraged to finish their lab and submit it during the lab session if possible.Arriving late to the lab will be penalized by -5 points on the lab grade. Quitting the lab session without the instructor authorization will be penalized by -10 points on the lab grade. For lab guidelines, contents, grading, and scheduling during the COVID-19 pandemic, the students are referred to the labs instructor: Dr. Pranaya Pokharel. -
Course Grade
The final grade for the course will be based on the scores earned in the three mandatory exams, the average score earned in the quizzes and homework, the average score earned in lab reports, and the attitude grade. The first exam contributes 10%, the second exam contributes 20%, the third exam contributes 35%, quizzes and homework average contribute 10%, lab reports average contributes 15%, and participation, neatness, attitude, and class attendance contribute 10%, for a total of 100%. The overall average score (X) for the course is determined as follows:
X = 0.10 x exam1 score + 0.20 x exam 2 score + 0.35 x Comprehensive exam score + 0.10 x (quizzes average score + homework average score) + 0.15 x (lab report average score) + 0.10 x (participation/neatness/attitude/attendance scores/ethics).
The final letter grade for the course is based on the value of X and is determined from the following grade levels:
Value of X (in %)
Letter Grade
89.5-100
A
79.5-89.4
B
69.5-79.4
C
59.5-69.4
D
< 59.4
F
Lab Grading
Submitted/Behavior
10
9.5
9
8.5
8
7.5
7
6.5
6
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
Motivation
10
9.5
9
8.5
8
7.5
7
6.5
6
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
Lab Theory
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Lab Procedure
10
9.5
9
8.5
8
7.5
7
6.5
6
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
Results and Discussion
30
28
26
24
22
20
18
16
14
12
10
9
8
7
6
5
4
3
2
1
0
Conclusion
10
9.5
9
8.5
8
7.5
7
6.5
6
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
Ref./Org./Neatness
10
9.5
9
8.5
8
7.5
7
6.5
6
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
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Class Attendance
This fall 2020 semester, the machine elements design lecture is designed as a hybrid lecture. It means that the lecture is offered simultaneously in two forms: 1) in person lecture (face-to face) in the classroom at the McCoy School of Engineering, and 2) online lecture through Zoom, the web-based video conferencing and meeting application. The lecture consists of a three 50-minutes sessions. Due to the COVID-19 pandemic, students who choose to attend the in-person lecture are expressly required to wear a face mask covering the mouth and the upper nose all the time during the lecture. Students are also required to keep their social distancing (6 ft.) while sitting in the class. Please check the following university statement:“During class, students must comply with MSU’s requirement for wearing a face covering” as mandated in the document https://msutexas.edu/return-to-campus/_assets/files/msu-texas-facial-covering-requirement.pdf -
Exams
The exams should be uploaded by the students on the Dropbox of D2L. After 24 hours the D2L Dropbox will be closed and not visible to the students. You are expected to take the exam on the scheduled date and time it is given. No make-up exam will be given at any time during the semester.Homework & Quizzes
Homework will be posted on D2L from a set of chosen chapters by the instructor. The students are required to upload the homework to a D2L Dropbox in PDF or Microsoft Word format. Homework have to be turned in on the due date specified on the homework question sheet. The maximum grade for the submitted homework on the due date is 50%. Late homework will still be accepted till the end of the semester and graded with a maximum grade of 30%.There will be a D2L quiz given for each homework. You are expected to take the quizzes on the scheduled dates and times specified by the instructor. No make-up quiz will be given at any time during the semester. Quizzes count for 50% of the homework total grade and should be uploaded to a D2L Dropbox within 24 hours of the quiz posted date.Each student is responsible for submitting his own individual personal homework and quiz copy, written in his own words. No dual or group homework copy is accepted unless specified by the instructor.Lab Reports
Students are encouraged to finish their lab and submit it during the lab session if possible.Arriving late to the lab will be penalized by -5 points on the lab grade. Quitting the lab session without the instructor authorization will be penalized by -10 points on the lab grade. For lab guidelines, contents, grading, and scheduling during the COVID-19 pandemic, the students are referred to the labs instructor: Dr. Pranaya Pokharel. -
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.
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