Course MAE 3316 Aerospace Structural Dynamics / 4314 Mechanical Vibrations
AE / ME 5311 Structural Dynamics
Fall 2018
Instructor: Kent L. Lawrence Web site: http://mae.uta.edu/~lawrence/
Office Number: 300D Woolf Hall
Office Telephone Number: 817 272-2019
Email Address: lawrence@uta.edu
Faculty Profile: http://www.uta.edu/profiles/kent-lawrence
Office Hours: 2:00 - 3:00 TR or by appointment or any time I'm in the office & available.
Time and Place of Class Meetings: TR 12:30 - 1:50 pm Room 100GS
Teaching Assistant: Jamal Mian Office: 118 NH 2:00 - 3:00 MW
Description of Course Content: Natural frequencies, steady harmonic and transient response of complex structures are studied using traditional and finite element methods. Computational aspects of these problems are discussed.
Student Learning Outcomes: Course goals include development of an understanding of: the basics of mechanical vibration and structural dynamics and the application to mechanical and structural systems. A passing grade will be used to access understanding.
Required Textbooks and Other Course Materials: Fundamentals of Structural Dynamics, 2nd Ed, Roy R. Craig & Andrew J Kurdila, John Wiley, 2006.
Other materials will be placed on Mavspace, Blackboard and on this web site, http://mae.uta.edu/~lawrence/
Descriptions of major assignments and examinations:
Quizzes: Unannounced
Examinations: Exams 2 or 3 plus FINAL EXAM
Major Assignments
Homework: See web page link http://mae.uta.edu/~lawrence/ > Assignments.
Worksheets: are two-person in-class exercises.
Projects: Project report slides are due on the last day of class.
Missed Exams: See instructor to schedule Excused missed exams. Submit a note from your physician or the equivalent.
Makeup Work: HALF CREDIT will be automatically deducted for unexcused late homework. Late work that is excused can receive up to full credit if submitted within 72 hrs of due date.
FULL CREDIT will be deducted for improper or incomplete problem definition, sloppy, results only, no units, scribble in the margins papers, etc. Applies to exams as well.
Do not engage in separate homework submissions, grade evaluations or negotiations with our Teaching Assistant.
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Tentative Schedule:
Week 1 - Introduction, Free Vib SDOF, Chapters 1,2,3: 1.1-1.6, 2.1-2.3, 3.1,3.2
Week 2 - Harmonic Response, Chapter 3: 3.1-3.2
Week 3 - Harmonic Response, Transient Response, Chapters 3,4,5: 3.5, 4.1-4.3, 4.6, 5.1, 5.2, 5.5
Week 4 - Transient Response, Chapter 6: 6.2-6.3, Appendix E & MATLAB on course web site.
Week 5 - Two Degree of Freedom Systems, Chapters 8 & 9: 8.1, 8.3; 9.1,9.2,9.4,9.5,9.6.
Week 6 - MultiDegree of Freedom Probs, Chapter 10: 10.1-10.3 Exam 1
Week 7 - Multi DOF Systems, Chapter 15:15.1, MATLAB.
Week 8 - Continuous Systems, Chapters 12&13: 12.1,12.2; 13.1-13.3
Week 9 - Finite Element Methods, Chapter 14.1
Week 10 - Mode Superposition, Chapter 11: 11.1-11.3
Week 11 - Direct Integration of MODF, Chapter 16: 16.1-16.5
Week 12 - Frequency Domain Methods, Chapter 7, Divergence & Flutter. Exam 2
Week 13 - Experimental Modal Analysis, Chapter 18: 18.1-18.4
Week 14 - Applications
Week 15 - Applications - Project Documentation (10-15 ppt slides)
Week 16 - Review Final Exam
As the instructor for this course, I reserve the right to adjust this schedule in any way that serves the educational needs of the students enrolled in this course. – Kent L Lawrence
Course Evaluation & Final Grade:
Each assignment counts as one HW grade; Worksheets and Quizzes each count as three HWs.
Final Grade Average: Homework & Worksheets & Quizzes - 25%, Exams - 25%, Project 25%, Final Exam- 25%
All home work and semester exam grades will be posted on Blackboard.
Letter Grades: A >= 90% of full credit, B >= 80%, C >= 70%, D >= 60%, F below 60%.
The semester project consists of performing analytical and experimental determination of natural frequencies of an instructor approved test specimen and the subsequent documentation of the results in slide-set format (examples on Mavspace). This project assignment is designated as a key assignment. Key assignments are used for assessment in order to collect input for improvement of the MAE program.
Home Work and Exam Procedures
Homework submissions
Submit your homework unfolded, stapled in the upper left corner. Include the following information in the upper quadrant of the first page:
Your Name - Last, First MAE 3316 / 4314 /AE/ME 5311
Date Course
Assignment Number and, if applicable, text problem number(s).
Each assignment should be considered an engineering task and documented accordingly. Work neatly, using one side of the paper only. Number, date, and put your initials in the upper right hand corner of each page. When the assignment calls for computer solution of problems, be sure to use the computer generated output to support your results not as a substitute for a report of your effort.
Provide a problem statement indicating what is known and what is to be found. Include a good sketch that shows dimensions, units, materials and their properties, loadings, supports, axis systems used, and when appropriate, member cross section shapes and dimensions.
FEM models should show loadings, boundary conditions, the type of element(s) used, the FEM program used, important node and element numbers.
The results should be summarized separately from the supporting calculations and any relevant conclusions drawn. If you are comparing an FEM solution to another known solution, make a clear statement of how the results compare using per cent error or per cent difference calculations. Be sure to include the input data you used. If you are solving a series of problems, one set of input data is probably sufficient.
Remember, your work should stand alone; that is, another engineer should be able to reproduce your results using only the write-up you prepare. See also Home Work Format on Mavspace.
Worksheets are short in-class problems solved by a two-person team.
Quizzes are short individual in-class exams.
Worksheets & Quizzes are each worth 3 times as much as one homework problem.
Unless otherwise noted, homework is due at the beginning of the class period on the due date.
All exams will be closed book, closed note exams. One sheet of formulas may be brought to exams. Makeup exams due to excused absences will be scheduled before the last week of the semester.
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