Southern Utah University

Course Syllabus

Southern Utah University
Southern Utah University
Fall Semester 2025

Strength of Materials (Face-to-Face)

ENGR 2140-01

Course: ENGR 2140-01
Credits: 3
Term: Fall Semester 2025
Department: ET
CRN: 31117

Course Description

Mechanical properties and behavior of materials under stress. Analysis of stresses in beams and shafts. Plane stress and strain, principal stresses. Axial, torsional, and flexural loading. Mohr’s circle. (Fall, Spring) [Graded (Standard Letter)] Co-requisite(s): ENGR 2145 Prerequisite(s): ENGR 2010 and MATH 1220 - Prerequisite Min. Grade: D-

Required Texts

R.C. Hibbeler, Mechanics of Materials: Tenth Edition, Pearson Prentice Hall, 2016

Recommended Texts

J. Gere and S. Timoshenko, Mechanics of Materials, Fourth Edition, CL Engineering, 1996
E. Popov, Engineering Mechanics of Solids, Pearson, 1998
F. P. Beer, E. R. Johnston, J. T. DeWolf, D. F. Mazurek, Mechanics of Materials, Seventh Edition, McGraw-Hill, 2014
T. A. Philpot Mechanics of Materials: An Integrated Learning System, 3rd Edition, Wiley, 2012

Learning Outcomes

  1. Develop an understanding of normal and shear stress and strain.
  2. Demonstrate an understanding of the stress/strain behavior of materials, and the ability to extract information from the stress/strain curve, such as moduli, strengths, etc.
  3. Demonstrate the ability to calculate stress and deflection of axially-loaded structures.
  4. Show an understanding of simple buckling phenomena.
  5. Demonstrate the ability to calculate stress and deflection of torsionally-loaded structures.
  6. Demonstrate the ability to calculate normal and shear stress and deflection in beams.
  7. Apply knowledge of stress distributions to calculate stresses in structures under combined loading.
  8. Demonstrate the ability to transform stress and strain, and to find principal normal stress and maximum shear stresses.
  9. Communicate engineering technical expertise through problem solving methods and calculations.

Course Outline

  • Introduction, Class Expectations Syllabus
  • Internal Normal Force, Shear Force, Bending Moment
  • Internal Normal Force Diagrams
  • Normal Stress, Normal Strain, Normal Stress-strain Diagrams
  • Stress from Axial Loads, Factor of Safety
  • Axial Deflection, Poisson's Ratio, Thermal Expansion
  • Statically Indeterminate Axial Problems
  • Centroids and the Second Moment of Area
  • Euler Column Buckling
  • Review #1, Exam #1
  • Shear Stress, Shear Strain, Shear Stress-strain Diagrams
  • Internal Torque, Internal Torsional Moment Diagrams
  • Stress in Torsionally-loaded Structures (Shafts)
  • Power-Torque Relation 
  • Deflection in Torsionally-loaded Structures (Shafts)
  • Statically Indeterminate Torsional Problems
  • Review #2, Exam #2
  • Simple Shear 
  • Internal Shear Diagrams 
  • Shear Stress: Computing the First Moment of Area, Q
  • Shear Stress in Transversely-loaded Members
  • Internal Bending Moment Diagrams 
  • Normal Stress in Bending, Unsymmetric Bending
  • Deflection in Beams 
  • Prismatic Beam Design 
  • Review #3 
  • Stress Concentrations
  • Creep and Fatigue
  • Pressure Vessels
  • Combined Loading
  • Stress Transformations 
  • Failure Theories
  • Review #4, Exam #4 
  • Comprehensive Review I: Axially-Loaded Structures
  • Comprehensive Review II: Torsionally-Loaded Structures
  • Comprehensive Review III: Transversely-Loaded Structures
  • Comprehensive Review IV: Combined Loading, Failure, Fatigue 

Course Requirements

  • Homework and Quizzes – Homework or quiz problems will be assigned throughout the semester to reemphasize material covered in class and/or the textbook.
  • Exams – Students will take several exams throughout the semester that will cover specific topics from the course and/or chapters from the textbook.
Specific course requirements may vary by instructor. 

Instructor's policies on late assignments and/or makeup work

A grace period of one class day is allowed for written homework and initial web submission. Web re-submissions (answers, not written work) are allowed throughout the semester, but not after the last regular class period (before finals).

Attendance Policy

There is no direct reward or penalty for students based on whether they choose to attend class. Nevertheless, students are responsible for all announcements made during class time (usually minor adjustments to homework assignments or exam dates), and they are also responsible for all material covered in class.

Course Policies and Procedures

Course Format: The class meets for three 50-minute lectures. Class time will consist of:
i. Discuss the assigned homework and reading
ii. Lecture
iii. In-class quizzes and problems

Grades: The weights assigned to various components of the course are shown below.
Homework and Quizzes 20 %
Exam 1 15 %
Exam 2 15 %
Exam 3 15 %
Exam 4 15 %
Final Exam 20 %
Note 1: If we get behind schedule, exam 4 and the final exam will be combined (and worth 35%).
Note 2: If the weighted exam average is better than the combined exam/homework average, this may be used to compute the final grade.

Homework: Homework sets for this course will be assigned each class period and are due one class period later at the beginning of class. Exceptions exist for sickness or university-excused absences. Homework will be submitted through the course website. Written work will be uploaded in the .pdf file format in accordance with the established guidelines provided. The website will be used to determine correctness of answers (50% of each homework score), and written work will be used to determine whether students are complying with the required formatting requirements (50% of each homework score).

Labs: Labs will be conducted as part of the lab section, and are separate from the class.

Grade Mapping and Ethics: Students will be assessed through a variety of assignments, exams, projects and participation during class. Participation will be recorded as part of the “Homework and Quizzes” grade and may include participation in problem-solving sessions and in-class discussions. The mapping between course scores and grades is given as follows.
A 100 % to 93.3 %
A- < 93.3 % to 90.0 %
B+ < 90.0 % to 86.6 %
B < 86.6 % to 83.3%
B- < 83.3% to 80.0 %
C+ < 80.0 % to 76.6 %
C < 76.6 % to 73.3 %
C- < 73.3 % to 70.0 %
D+ < 70.0 % to 66.6%
D < 66.6% to 63.3 %
D- < 63.3 % to 60.0 %
F < 60.0 % to 0.0 %

At the end of the semester, some students inevitably feel that they should be awarded a higher grade than what they have earned. For example, a student finishes the semester with an 86.5% in the course. Although this student has earned a “B” according to the above grading policy, this student feels entitled to a “B+” or even an “A-.” So, they email the instructor and ask for a higher grade. I’ve heard many reasons for these things over the years, but I think students don’t realize that instructors don’t award grades to students. They set up the rules for the course...rules which apply equally to all students. They evaluate student work according to the rules, standards, and guidelines provided, and then compute grades. Asking an instructor to change the rules just for you is asking the instructor to compromise his integrity. This is not particularly good, and does not reflect well on the student. It also doesn’t reflect well on the instructor that a student would think the instructor has so little integrity that he would be willing to compromise it for the student. These requests will be denied, so please save yourself the time, effort, and embarrassment...don’t be the person to send that email.

If you find a mistake in the grading scheme, answer key, or inconsistency with the grading policy as stated and as implemented, please bring this to the attention of the instructor. These types of things are greatly appreciated, and appropriate corrections will be made according to the specifics of the situation.

Re-Grading: I sometimes employ a student grader to help evaluate student work. This helps substantially with the instructor’s workload, and makes it easier to provide timely feedback to students. While I do my best to train the grader to evaluate work in the same manner as I would, I acknowledge that student grading may not be ideal in all circumstances. After receiving feedback from a student grader, students may request that the instructor re-evaluate their work personally. In doing so, students
should recognize that such a request will cause the entire assignment to be re-evaluated, not just the parts they disliked about what the student grader said. When the instructor re-grades an assignment, the grade on an assignment may go up, but it may also go down. These requests must be made by email or discord, and cannot be made after the last scheduled day of regular class for the semester (before finals, to allow for timely submission of final grades).

Responsibility to Learning: Students are responsible for their own learning. Reading the book and completing the homework assignments may not be enough for some students to learn the material and does not guarantee a passing grade. The responsibility rests upon the student to: re-read, do more problems than assigned,  seek help from a classmate or tutor, and complete other activities as needed to increase understanding. A textbook reading schedule is provided for students to follow along with the topics as they are covered in class.

Generative AI: I am keenly aware that many tools exist to help you with your school work, especially writing. Some of these digital tools, such as Grammarly or openai.com (ChatGPT). I encourage you to make use of all the tools available to you, including these. I do, however, have a few requirements and comments. First, I have a strict transparency requirement. If you use generative AI or other writing-assisting digital tools, then you must create an appendix in your written work that includes a complete transcript of all your chat conversations that led to the writing you are submitting. This may be long, but since I don’t plan to ever print that appendix, don’t worry. The trees are safe. Nobody will mind the use of a few extra bits of memory, and the environmental impact will be negligible. It is important to keep in mind, however, that as the author of the work, you are still responsible for the final product. This may change over time, but I have found that the writing produced by these programs on engineering reports is not of sufficient quality to earn a passing grade in my course. You may use these as an aid, or as a starting point, but unless you are an expert AI trainer, I would advise against using the writing from these as the final product you submit.

ADA Statement

Students with medical, psychological, learning, or other disabilities desiring academic adjustments, accommodations, or auxiliary aids will need to contact the Disability Resource Center, located in Room 206F of the Sharwan Smith Center or by phone at (435) 865-8042. The Disability Resource Center determines eligibility for and authorizes the provision of services.

If your instructor requires attendance, you may need to seek an ADA accommodation to request an exception to this attendance policy. Please contact the Disability Resource Center to determine what, if any, ADA accommodations are reasonable and appropriate.

Academic Credit

According to the federal definition of a Carnegie credit hour: A credit hour of work is the equivalent of approximately 60 minutes of class time or independent study work. A minimum of 45 hours of work by each student is required for each unit of credit. Credit is earned only when course requirements are met. One (1) credit hour is equivalent to 15 contact hours of lecture, discussion, testing, evaluation, or seminar, as well as 30 hours of student homework. An equivalent amount of work is expected for laboratory work, internships, practica, studio, and other academic work leading to the awarding of credit hours. Credit granted for individual courses, labs, or studio classes ranges from 0.5 to 15 credit hours per semester.

Academic Freedom

SUU is operated for the common good of the greater community it serves. The common good depends upon the free search for truth and its free exposition. Academic Freedom is the right of faculty to study, discuss, investigate, teach, and publish. Academic Freedom is essential to these purposes and applies to both teaching and research.

Academic Freedom in the realm of teaching is fundamental for the protection of the rights of the faculty member and of you, the student, with respect to the free pursuit of learning and discovery. Faculty members possess the right to full freedom in the classroom in discussing their subjects. They may present any controversial material relevant to their courses and their intended learning outcomes, but they shall take care not to introduce into their teaching controversial materials which have no relation to the subject being taught or the intended learning outcomes for the course.

As such, students enrolled in any course at SUU may encounter topics, perspectives, and ideas that are unfamiliar or controversial, with the educational intent of providing a meaningful learning environment that fosters your growth and development. These parameters related to Academic Freedom are included in SUU Policy 6.6.

Academic Misconduct

Scholastic honesty is expected of all students. Dishonesty will not be tolerated and will be prosecuted to the fullest extent (see SUU Policy 6.33). You are expected to have read and understood the current SUU student conduct code (SUU Policy 11.2) regarding student responsibilities and rights, the intellectual property policy (SUU Policy 5.52), information about procedures, and what constitutes acceptable behavior.

Please Note: The use of websites or services that sell essays is a violation of these policies; likewise, the use of websites or services that provide answers to assignments, quizzes, or tests is also a violation of these policies. Regarding the use of Generative Artificial Intelligence (AI), you should check with your individual course instructor.

Emergency Management Statement

In case of an emergency, the University's Emergency Notification System (ENS) will be activated. Students are encouraged to maintain updated contact information using the link on the homepage of the mySUU portal. In addition, students are encouraged to familiarize themselves with the Emergency Response Protocols posted in each classroom. Detailed information about the University's emergency management plan can be found at https://www.suu.edu/emergency.

HEOA Compliance Statement

For a full set of Higher Education Opportunity Act (HEOA) compliance statements, please visit https://www.suu.edu/heoa. The sharing of copyrighted material through peer-to-peer (P2P) file sharing, except as provided under U.S. copyright law, is prohibited by law; additional information can be found at https://my.suu.edu/help/article/1096/heoa-compliance-plan.

You are also expected to comply with policies regarding intellectual property (SUU Policy 5.52) and copyright (SUU Policy 5.54).

Mandatory Reporting

University policy (SUU Policy 5.60) requires instructors to report disclosures received from students that indicate they have been subjected to sexual misconduct/harassment. The University defines sexual harassment consistent with Federal Regulations (34 C.F.R. Part 106, Subpart D) to include quid pro quo, hostile environment harassment, sexual assault, dating violence, domestic violence, and stalking. When students communicate this information to an instructor in-person, by email, or within writing assignments, the instructor will report that to the Title IX Coordinator to ensure students receive support from the Title IX Office. A reporting form is available at https://cm.maxient.com/reportingform.php?SouthernUtahUniv

Non-Discrimination Statement

SUU is committed to fostering an inclusive community of lifelong learners and believes our university's encompassing of different views, beliefs, and identities makes us stronger, more innovative, and better prepared for the global society.

SUU does not discriminate on the basis of race, religion, color, national origin, citizenship, sex (including sex discrimination and sexual harassment), sexual orientation, gender identity, age, ancestry, disability status, pregnancy, pregnancy-related conditions, genetic information, military status, veteran status, or other bases protected by applicable law in employment, treatment, admission, access to educational programs and activities, or other University benefits or services.

SUU strives to cultivate a campus environment that encourages freedom of expression from diverse viewpoints. We encourage all to dialogue within a spirit of respect, civility, and decency.

For additional information on non-discrimination, please see SUU Policy 5.27 and/or visit https://www.suu.edu/nondiscrimination.

Pregnancy

Students who are or become pregnant during this course may receive reasonable modifications to facilitate continued access and participation in the course. Pregnancy and related conditions are broadly defined to include pregnancy, childbirth, termination of pregnancy, lactation, related medical conditions, and recovery. To obtain reasonable modifications, please make a request to title9@suu.edu. To learn more visit: https://www.suu.edu/titleix/pregnancy.html.

Disclaimer Statement

Information contained in this syllabus, other than the grading, late assignments, makeup work, and attendance policies, may be subject to change with advance notice, as deemed appropriate by the instructor.