Machine Dynamics (3 cr)

Evaluation scale

0-5

Objective

The designer of a dynamic structure must take care that the structure will not vibrate catastrophically. On this course you will learn to calculate the natural frequencies of structures and you will understand their importance in forced vibration. You will also learn to design simple structures so that the resonance effect is avoided. You will also recognize vibrating systems with multiple degrees of freedom.

Knowledge and understanding: You understand the theoretical concepts in machine dynamics.

Engineering Practice: You know how to calculate natural frequencies and are able to apply this information in your designs.

Content

Introduction and refresher lessons on dynamics. Components of a vibrating system. Undamped and damped natural vibration of one degree of freedom. Undamped and damped forced vibration of one degree of freedom. Balancing. Isolation of vibration. Motion equations of multiple degrees of freedom and undamped natural vibration.

Materials

Inman: Engineering vibration

Teaching methods

Contact lessons, virtual study

Student workload

Lectures and exercises 28 h. Self study 40 h.

Assessment criteria, satisfactory (1)

Adequate (1): The student identifies the basic knowledge and terminology but can only sufficiently apply them to simple vibration tasks of machines and structures.

Satisfactory (2): The student is familiar with the basic knowledge and terminology but can only satisfactorily apply them to vibration tasks of machines and structures.

Assessment criteria, good (3)

Good (3): The student masters the essential knowledge and skills covered by the course and can apply this knowledge to vibration tasks of machines and structures: - is familiar with different theoretical vibration models - can generate equations of motion of vibration systems - can solve basic magnitudes of vibration technology - is familiar with different ways to reduce disadvantages of vibration.

Very good (4): The student masters the essential knowledge and skills and can apply the knowledge acquired in a critical and innovative manner to vibration tasks of machines and structures.

Assessment criteria, excellent (5)

Excellent (5): The student masters the essential knowledge and skills of the course and can apply the knowledge acquired in a critical and innovative manner to demanding vibration tasks of machines and structures.

Qualifications

The students master the basics of the derivative and integral calculus for real functions and they can also exploit their knowledge in applications. The students can solve separable first and second order linear differential equations. The students master the central concepts, contents and natural laws of kinematics and dynamics and they can apply them with help of mathematics. The students have the basic knowledge of the strength of materials and they are able to make static sizing of simple materials with the help of manuals and table cases. The students are able to form a mechanical model from a structure under study and they can solve the stresses, tensions and transformations affecting it.