Engineering Mechanics 3

Course title

B0045100

	HOSOYA Naoki
	YAHAGI Shuichi

Course description

Vibration engineering covers vibration phenomena of mechanical systems (e.g. machines or structures) that are assumed to be a single-degree-of-freedom or two-degree-of-freedom system as an introduction against undergraduate students. Furthermore, students study a planar kinematics of rigid bodies and a rigid-body dynamics in three dimensions to design a motion of a hard robot.

Purpose of class

To realize a dynamic design of mechanical systems with desired performance, students should learn to express and solve differential equations of motion of mechanical systems with a single-degree-of-freedom or two-degree-of-freedom. In addition, students should study a planar kinematics of rigid bodies and a rigid-body dynamics in three dimensions.

Goals and objectives

To understand the derivation and solution of differential equations of motion
To understand the theory of free or forced vibrations with or without damping
To understand the planar kinematics of rigid bodies
To understand the rigid-body dynamics in three dimensions

Language

Japanese

Class schedule

	Class schedule	HW assignments (Including preparation and review of the class.)	Amount of Time Required
1.	Introduction Free vibrations without damping	To investigate vibration engineering To read vibration free vibrations without damping	190minutes
1.	Introduction Free vibrations without damping		100minutes
2.	Derivation of the differential equations of motion	To read derivation of the differential equations of motion	190minutes
3.	Free vibrations with viscous damping	To read free vibrations with viscous damping	190minutes
3.	Free vibrations with viscous damping		100minutes
4.	Measurement of damping (logarithmic decrement)	To read measurement of damping (logarithmic decrement)	190minutes
5.	Forced vibrations without damping	To read forced vibrations without damping	190minutes
6.	Forced vibrations with viscous damping	To read forced vibrations with viscous damping	190minutes
7.	Response to arbitrary excitation (the convolution integral) Midterm examination	To read response to arbitrary excitation (the convolution integral) To review from 1st to 7th lecture	190minutes
8.	Angular momentum	To read response to angular momentum	190minutes
9.	Planar kinematics of rigid bodies (rotation about a fixed axis)	To read response to planar kinematics of rigid bodies (rotation about a fixed axis)	190minutes
10.	Planar kinematics of rigid bodies (mass moment of inertia)	To read response to planar kinematics of rigid bodies (mass moment of inertia)	190minutes
11.	Planar kinematics of rigid bodies (relative velocity and relative acceleration)	To read response to planar kinematics of rigid bodies (relative velocity and relative acceleration)	190minutes
12.	Planar kinematics of rigid bodies (motion relative to rotating axes)	To read response to planar kinematics of rigid bodies (motion relative to rotating axes)	190minutes
13.	Rigid-body dynamics in three dimensions	To read response to rigid-body dynamics in three dimensions	190minutes
14.	Coriolis force Final Examination	To read response to Coriolis force To review from 8th to 13rd lecture	190minutes
Total.	-	-	2860minutes

Relationship between 'Goals and Objectives' and 'Course Outcomes'

	Homework and quiz	Midterm examination	Final examination	Total.
1.	5%	20%	10%	35%
2.	5%	20%	10%	35%
3.	5%	0%	10%	15%
4.	5%	0%	10%	15%
Total.	20%	40%	40%	-

Evaluation method and criteria

The grading for this class was broken down as follows:
Homework and quiz (20%)
Midterm examination (40%)
Final examination (40%)
The threshold of 60 point is to solve perfectly sample problems that are explained in each class.

Feedback on exams, assignments, etc.

ways of feedback	specific contents about "Other"
Feedback in the class	電子メール，対面の面談，オンライン（カメラON）などでも対応する．

Textbooks and reference materials

Yuichi Sato, Understanding vibration phenomena, ISBN978-4-274-20483-8
(J.P. Den Hartog, Mechanical vibrations, ISBN0-486-64785-4)
J. L. Meriam and L. G. Kraige, Engineering Mechanics Dynamics, ISBN 978-0-470-61481-5

Prerequisites

Students should review the Engineering mechanics 1 and 2.

Office hours and How to contact professors for questions

If you have any questions, please contact during office hours. I will be holding office hours (Zoom) on Fridays from 5-6 PM(JST).
Sep. 24 - Jan. 21

Regionally-oriented

Non-regionally-oriented course

Development of social and professional independence

Non-social and professional independence development course

Active-learning course

N/A

Course by professor with work experience

Work experience	Work experience and relevance to the course content if applicable
N/A

Education related SDGs:the Sustainable Development Goals

4.QUALITY EDUCATION
9.INDUSTRY, INNOVATION AND INFRASTRUCTURE

Last modified : Tue Sep 26 04:04:28 JST 2023