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# Engineering Mechanics 3

Bachelor Module (German), 8 SWH, Winter semester

Lecturer (assistant) German See TUMonline

### Content

Mechanics, as a branch of physics, is a fundamental discipline in engineering sciences. It deals with the description and prediction of the motion of bodies and the associated forces. In the modules Engineering Mechanics 1 and 2, time-independent forces and deformations in stationary, elastic bodies were considered. As such, these courses focused on solving static and elastostatic problems. Engineering Mechanics 3 now deals with bodies and systems that move in time, i.e. dynamic ones.

The basics of kinematics are introduced in the introduction. Kinematics deals exclusively with the description of a (rigid) body’s motion and how the necessary quantities to describe the motion can be measured and derived from one another.

The second chapter, kinetics, analyzes how the action of forces and moments can change the state of motion of a body or system by linking the causes (forces and moments) to the kinematic variables.

In the third chapter, the linear theory of vibrations is introduced. Vibrations are a subfield of kinetics, where bodies or systems have a regularity in their motion. However, we will limit ourselves to linear vibration problems in this lecture.

### Course Objectives

A successful attendance to the module enables the students to...

• ... clearly describe the motion of mechanical systems with the help of kinematic quantities.
• ... apply mechanical principles, including energy methods, to describe a possible change in the state of motion of a dynamic mechanical system.
• ... describe and analyze problems in the field of linear vibration theory.

### Organizational Matters

Lecture:

• regular class, in general two lectures per week with 2 SWH duration per lecture
• presentation of the lecture's content through a slide-based presentation with the integration of digital auxiliary media

Exercise Course:

• weekly regular class, 2 SWH duration
• repetition and consolidation of the lecture's topics by using a slide-based presentation
• Exemplary calculation of exercises concerning the lecture's content, presented as frontal teaching

Student Exercise Course:

• 2 SWH duration per appointment; in general three appointments per week, where it is recommended to attend one appointment
• Independent work on the exercises by the students
• Supervision and answering of questions by students of higher semesters (tutors)
• Exemplary calculation of one exercises by a tutor, presented as frontal teaching

Examination:

• Written exam, duration: 90 minutes.

### Recommended Previous Knowledge

• Engineering Mechanics 1
• Engineering Mechanics 2

The above mentioned recommended previous knowledge is not obligatory to successfully complete this course. If you are indecisive about your participation in this course, please contact the responsible course assistant.

### Consultation Hours

Our student tutors are available for questions regarding the content of the course during a variety of office hours. Possible dates of tutor consultation hours can be found on the moodle course page.

For organizational questions, please send an email to tm3.vib@ed.tum.de.