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School of Engineering
- Undergraduate major in Mechanical Engineering
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- Liberal arts and basic science courses
- First-Year Courses
- School of Science
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School of Environment and Society
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- Graduate major in Technology and Innovation Management
- Common courses
- Liberal arts and basic science courses
- Academic unit or major
- Graduate major in Mechanical Engineering
- Instructor(s)
- Okuma Masaaki
- Class Format
- Lecture
- Media-enhanced courses
- Day/Period(Room No.)
- Fri3-4()
- Group
- -
- Course number
- MEC.D531
- Credits
- 1
- Academic year
- 2021
- Offered quarter
- 3Q
- Syllabus updated
- 2021/3/19
- Lecture notes updated
- -
- Language used
- English
- Access Index
-
Course description and aims
The experimental modal analysis is one of powerful engineering tools for design, development and troubleshooting of machines in widerange to enhance the performance quality. Various new ideas and applications regarding the analysis are researched today. This lecture introduces the experimental modal analysis with showing some examples and exercises for deep understanding.
The aims to be emphasized are the following.
1. the fundamental theories from the basics of multi-degrees of freedom systems up to the experimental modal analysis
2. Introduction of some kinds of modal vibration testing
3. Introduction of its practicability and future ability
Student learning outcomes
At the end of this course, students will be able to :
1) analyze the vibration of multi-degrees of freedom systems by modal analysis
2) understand modal parameter identification techniques using experimental frequency response functions
3) understand practical usage of identified modal parameters for machine design and development
Keywords
Mechanical Vibration, Experimental Modal Analysis, Identification, Data acquisition and treatment, Spectal Analysis, Computer Aided Engineering
Competencies that will be developed
| ✔ Specialist skills | Intercultural skills | Communication skills | Critical thinking skills | ✔ Practical and/or problem-solving skills |
Class flow
This course consists of lecturing detailed theories by writing on blackboard and some exercises including computer-programing using each student's note-PC. Note that Matlab software is available to download from GSIC to each student's personal note-PC .
Course schedule/Required learning
| Course schedule | Required learning | |
|---|---|---|
| Class 1 | Introduction of the history from Mechanical Vibration to Experimental Modal Analysis | Understand the research history of the experimental modal analysis, and enhance academic interest in the analysis. |
| Class 2 | The fundamental theory of multi-degrees of freedom vibratory systems | Solve the fundamental vibration problems of multi-degrees of freedom systems. |
| Class 3 | Fundamentals of theoretical modal analysis | Understand the theoretical modal analysis. |
| Class 4 | Vibration modal testing | Understand some standard methos of vibration test. |
| Class 5 | Experimental data treatment and analysis | Understand the importance and the methods of data treatment. |
| Class 6 | Fundamentals of modal parameter identification techniques and visualization of result | Understand basic methods of modal parameter identification. |
| Class 7 | Exercise (programing code) of modal parameter identification | Understand the theories concretely. |
Out-of-Class Study Time (Preparation and Review)
To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.
Textbook(s)
Structural Dynamics, written by Masaaki Okuma, Asakura, 2012. ( in Japanese )
Reference books, course materials, etc.
Modal testing, written by D. J. Wwins, Research Studies Press LTD.
Assessment criteria and methods
The standard scoring way is based on final examination (50%) and exercises (50%). However, no final exam is charged and the scores are determined by some exercises and reports due to COVID-19 and the online style of the lecture.
Related courses
- MEC.D201 ： Mechanical Vibrations
- MEC.D311 ： Vibration Analysis
- MEC.A201 ： Engineering Mechanics
- MEC.B333 ： Spectral Analysis
- MEC.D431 ： Advanced Sound and Vibration Measurement
Prerequisites (i.e., required knowledge, skills, courses, etc.)
Appropriate knowledge of mechanics and mechanical vibration in undergraduate level.
Other
Each student is required to attend with his/her note-PC in which Matlab software has been installed.
This course is provided in 3Q and only master students in mechanical engineering course are permitted to take this course in 2020 with the consideration of a new infectious disease, COVID-19.
