Walter D. Thomas, Ph. D. Lecturer PH223C, (978)-­‐934-­‐2775 walter_thomas@uml.edu DEPARTMENT OF MECHANICAL ENGINEERING Spring 2014 Course Syllabus for Strength of Materials 22.212-­‐ Sections 201 & 203 Instructor: Dr. W. D. Thomas Office: Perry Hall 223C Office Hours: M & W: 2 – 4 pm; Tuesday: 10 -­‐ noon Phone: 978-­‐934-­‐2775 (office) Email: walter_thomas@uml.edu Class times, room: Sec. 201 – M-­‐W-­‐F 9 – 9:50 AM, Ball Hall 326 Sec. 203 – M-­‐W-­‐F 1 – 1:50 PM, Ball Hall 326 Catalog Description: Stress and deformation analysis of bodies subjected to uniaxial loading, thermal strain, torsion of circular cross-­‐sections, shear flow in thin-­‐walled sections, bending of beams, and combined loading. Application of equilibrium, compatibility, and load-­‐deformation relations to solve statically determinate and indeterminate systems. Prerequisites: 92.132 Calculus II and 22.211 Statics Textbook: Mechanics of Materials, by J.M. Gere and B.J. Goodno. 8th ed. (2012), 7th ed. (2008), 6th ed. (2003), or 5th ed. (2000). Publisher: Cengage Learning. Electronic (eBook) editions of the text are allowed—but are not to be used on cell phones in class. Objectives: This course will provide an introduction to the mechanics of deformable, solid bodies subjected to static loading. It examines structural elements of practical interest, such as bars, shafts, beams, and thin-­‐walled pressure vessels, in order to determine the stress and deformation of these elements when subjected to various types of loading. The course examines how stress and deformation, together with material properties, determine the adequacy of a mechanical component for its intended use in a specific design context. Emphasis is on understanding engineering fundamentals and applying them to engineering problems of practical interest. Tests: There will be three tests given during the semester. The coverage of material will generally span two or more chapters and will require an ability to synthesize ideas from multiple chapters. These tests will be administered in our classroom during normal class times and last 50 minutes. Note: your lowest test grade will be dropped from your course grade, with the remaining two counting for 20% each. There will be NO make-­‐up exams for students who miss a test. Quizzes: Quizzes will be given in-­‐class throughout the semester, approximately once per week. Note: your lowest quiz grade will be dropped and not used to calculate your quiz grade average. Final Exam: The final exam’s time/date/location is TBD. It will primarily cover the material taught between test 3 and the end of the semester. However, I reserve the right to add questions from earlier in the semester as I see fit. Grade Composition: Class Participation* 5% Homework 10% Quizzes 20% In-­‐class Tests 40% Final Exam 25% Total: 100% *Part of this grade is based on your answers to “clicker” questions asked randomly during class sessions. Students who fail to bring their clicker to a lecture will receive a score of zero for the questions presented during that lecture and will be marked as absent unless they approach the instructor before leaving the classroom to indicate they were present. NO EXCEPTIONS. Clicker malfunctions must be brought to the attention of the instructor as soon as possible so that the source of the malfunction can be promptly identified and corrected. Failure to abide by these rules may result in loss of participation points. Homework: Homework will be assigned on a regular basis, usually once per week. Homework must be turned in at the beginning of class on the date due. Late homework will NOT be accepted. Students are encouraged to work together in small groups to discuss the approach and better understand the homework. Each student, however, MUST then solve and write out her/his own solutions to the homework problems. Copying of homework will result in a grade of 0 for that homework and repeated incidents will result in an F for the course. Final Grade: The letter grade will be attributed with respect to the whole class average grade (AVERAGE) and the standard deviation around that average (STD). A student having a numerical grade equal to the class average will be granted a B-­‐. For example, if the class average for the semester is a 77, then a student whose own average = 77 would receive a B-­‐. 2 Attendance: The University of Massachusetts Lowell policy on class attendance is in effect for this course. However, part of your grade is on class participation. Therefore, the more you attend class, the more chance you have to participate, and the better your grade could be. Classroom Demeanor: The expectation for students to participate as engineering professionals is implicit. Turn your cell phone ringers to “silent” or simply turn them off in class. Email Policy: When required, I will send class information to students via email using the Intercampus Student Information System (iSiS) system. iSiS sends emails to your UML student email address. Every student who registers for courses at the University of Massachusetts – Lowell receives a UML student email address. Students are responsible for checking this email account for messages from the Instructor for this course. Wiki Page: I will post homework assignments using a class “wiki” space, as well as solutions to homework and other class material as necessary. The URL for our wiki is http://22-­‐212-­‐spring-­‐
2014.wiki.uml.edu/. I will “invite” all students to join this wiki at the beginning of the semester. Academic Support: Please contact me privately if you need accommodations because of a disability. The University’s Policy for Students with Disabilities will be followed for this course (http://www.uml.edu/student-­‐services/disability/policy.html). Honors and Ethics: Engineers have a trust placed on them by society to ensure that the public safety is held paramount. People constantly depend on engineers to provide safe bridges, buildings, drinking water, etc. This trust must not be violated. For this reason, no form of academic dishonesty will be tolerated in this class. Students are encouraged to work together on homework assignments and class projects (if assigned). However, any evidence of direct copying of a homework assignment will result in a zero grade for that assignment for all students involved. Any evidence of academic dishonesty during a test or the final exam will also result in a zero grade for that assignment for all students involved. Refer to the University of Massachusetts – Lowell’s Academic Integrity Policy for additional details. (http://www.uml.edu/catalog/undergraduate/policies/academic_dishonesty.htm). During tests and the final exam, only calculators that cannot communicate with other electronic devices are allowed. Students are encouraged to use calculators approved for the Fundamentals of Engineering (FE) exam to prepare themselves for the FE Exam. Information on FE Exam can be found at http://www.ncees.org/Exams/Exam-­‐day_policies/Calculator_policy.php. However, the use of the approved FE calculators is not required. All other electronic devices, such as mobile phones, music players, computers, tablets, etc. are not allowed during the tests and the final exam. NXT Clickers by Turning Technologies: The use of clickers will be integrated into the course on an almost daily basis. As discussed above, part of the participation grade will be based on the use of clickers. The class will use the NXT Clicker by Turning Technologies. Instructions for registering your clicker will be provided via email from the instructor. 3 Note that the cost of a new NXT clicker device is $53.50. There is also a $15 rebate for the spring 2014 semester. Visit http://clickers.wiki.uml.edu/Student+Resources for details on the rebate program. You will need to use the NXT clicker in the Applied Strengths course next year and so are encouraged to consider this a long-­‐term investment and to not sell the device back each semester. Outcomes: Specific outcomes associated with this course are listed below. At the end of this course, a required on-­‐line evaluation must be filled out by each student to assist us in assessing how well each of the following objectives were met. Specific Outcomes:
A student will be able to...
Determine the stress at various locations along a
beam and on a cross- section due to axial,
torsional, and bending loads for statically
determinate and indeterminate cases.
Determine the deflection or angle of twist at
various locations along a beam due to axial,
torsional, and bending loads for statically
determinate and indeterminate cases
Determine the necessary geometry and material
properties required to withstand a given set of
axial, torsional, and bending loads for statically
determinate and indeterminate cases.
Describe the difference between material
stiffness, torsional stiffness, and flexural stiffness,
and relate this to optimization of beam and shaft
design.
Describe the general shape of the stress
distribution on a cross-section due to axial,
torsional, and bending loads and relate this to
probable failure locations.
Use linear superposition to obtain solutions to
problems that have combined axial, bending and
torsional loads.
Use integration to solve problems of varying
cross-section, material properties, or loads.
Determine the stress at a specified location, in a
specified orientation, and determine principal
stresses and maximum shear stresses for that
point.
Describe the assumptions/limitations of the
analysis methods used. Model a real world
structure using proper assumptions of joint type,
loading condition, and rigid vs. deformable bodies.
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homework
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questions in class,
and exams
Homework, direct
questions in class,
and exams
Homework, direct
questions in class,
and exams
Homework, direct
questions in class,
and exams
Homework, direct
questions in class,
and exams
Homework, direct
questions in class,
and exams
Homework, direct
questions in class,
and exams
Homework, direct
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and exams
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