### 2021　Engineering Mechanics A

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Instructor(s)
Course component(s)
Lecture    (ZOOM)
Day/Period(Room No.)
Wed1-4(I121)
Group
A
Course number
MEC.A201
Credits
2
2021
Offered quarter
1Q
Syllabus updated
2021/3/19
Lecture notes updated
-
Language used
Japanese
Access Index ### Course description and aims

This course is mainly for students who have selected the field of mechanical engineering (Department of Mechanical Engineering) and lectures on the following points as an introductory course to various applied mechanics in the field.
1. Statics (mass point, rigid body, moment of a force, etc.)
2. Dynamics of a mass point (relative motion, Coriolis acceleration, etc.)
3. Dynamics of a rigid body (moment of inertia, angular momentum, tensor of inertia, gyroscopic effect, etc.)
The notable aim of this course is to reinforce the understanding gained in Fundamentals of Mechanics, a first-year general education course, and for students to gain ability in solving specific mechanics problems in theory and by numerical calculation as students of mechanical engineering for whom mechanics is especially vital.

### Student learning outcomes

1. Statics: To understand force and moment that works on a point mass or rigid body.
2. Dynamics1: To understand relative motion, relative and Coriolis acceleration.
3. Dynamics2: To understancd inertia moment of a rigid body.
4. Dynamics3: To introduce Euler's formula of dynamics based on angular momentum and inertia tensor. And to understand gyro effect.

This class aims at learning of 1 in learning objective.

### Keywords

Statics, Truss and rahmen, motion of a mass point, motion of a rigid body

### Competencies that will be developed

 ✔ Specialist skills Intercultural skills Communication skills Critical thinking skills ✔ Practical and/or problem-solving skills ✔ Basic knowledge for mechanical engineering

### Class flow

This course consists of lectures including exercise problems.

### Course schedule/Required learning

Course schedule Required learning
Class 1 Force acting on a mass point, and the balance of force Force is expressed by vector. Force is composed and decomposed.
Class 2 Force acting on a rigid body, and the balance of force Relationship between moment and force, Composition and Decomposition of forces
Class 3 Basic analysis of truss by means of the balance of force Analysis of the load applied to truss elements
Class 4 Basic analysis of truss by means of virtual work principle Virtual work principle and analysis of truss based on the principle
Class 5 Relative motion (part 1): in two-dimensional rotary coordinate system Relative motion in two-dimensional rotary coordinate systems
Class 6 Relative motion (part 2): in three-dimensional rotary coordinate system Relative motion in three-dimensional rotary coordinate systems
Class 7 Motion of rigid body (part 1): Expression of motion, and the moment of inertia (part1) MMoment of inertia, Motion of a rigid body
Class 8 Motion of rigid body (part 2): The theorem of the parallel axis Theorem of the parallel axis
Class 9 Motion of rigid body (part 3): Tensor of inertia Tensor of inertia
Class 10 Motion of rigid body (part 4):The inertial ellipse body and the principal axes of the moment of inertia Inertial ellipse body, Principal axes of the moment of inertia
Class 11 Motion of rigid body (part 5): Angular momentum and kinetic energy Amomentum of inertia, Kinetic energy
Class 12 Motion of rigid body (part 6): coordinate transformation Transformation between two coordinate systems
Class 13 Motion of rigid body (part 7): the vector expression of angular velocity Understand the vector expression of angular velocity.
Class 14 Euler equations of motion, The gyroidal effect Euler equations of motion, Gyroidal effect

### 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.

### Assessment criteria and methods

To be evaluated based on the reporting assignments

### Related courses

• LAS.P101 ： Fundamentals of Mechanics 1
• LAS.P102 ： Fundamentals of Mechanics 2
• MEC.I211 ： Robot Kinematics
• MEC.D201 ： Mechanical Vibrations
• MEC.C331 ： Strength and Fracture of Materials (Mechanical Engineering)
• MEC.H432 ： Multibody Systems
• MEC.J311 ： Fundamentals of Precision Machinery
• LAS.M106 ： Linear Algebra II

### Prerequisites (i.e., required knowledge, skills, courses, etc.)

You have to completed 'Fundamentals of mechanics 1 and 2' , or have equivalent knowledge.
Moreover, you have to have knowledge of Linear Algebra II (eigen value, eigen vector). 