Structural Dynamics and Earthquake Engineering

Code:

EC0050

Acronym:

DEES

Keywords
Classification	Keyword
OFICIAL	Structures

Instance: 2007/2008 - 1S

Active?	Yes
Responsible unit:	Structural Division
Course/CS Responsible:	Master in Civil Engineering

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
MIEC	46	Syllabus since 2006/2007	5	-	5	60	133

Teaching language

English

Objectives

Understanding of the basic formulations for the analysis of linear systems under deterministic dynamic excitations.
Application to the analysis of the behaviour of Civil Engineering structures submitted to dynamic loads and, in particular, to the seismic analysis of building structures taking into account the present codes specifications.
Introduction to dynamic analysis under random excitations and to experimental structural dynamics.

Program

Importance of Structural Dynamics in the context of Civil Engineering.
Models for dynamic analysis.

Single-degree-of-freedom systems. Equation of motion. Free vibration response. Response to a sinusoidal excitation. Analysis of the response to a general dynamic excitation using the Duhamel integral or Fourier series. Input-output relation in the frequency domain. Response to a base excitation. Experimental identification of the natural frequency and damping factor. Rayleigh method.

Multi-degree-of-freedom systems. Equations of motion. Analysis of the free vibration response. Natural frequencies and mode shapes. Orthogonality property. Rayleigh damping. Analysis of the response to a general dynamic input.
Method of modal superposition. Direct integration methods.

Idealization of different types of dynamic loads in Civil Engineering problems. Idealization of the seismic excitation. Concept of response spectrum. Seismic response analysis. Application of the Rayleigh method. Discussion of code specifications concerning the seismic analysis of building structures. Methodologies based on 2D and 3D structural models.

Introduction to Stochastic Structural Dynamics. Concept of power spectrum. Stochastic input-output relations of a single-degree-of-freedom linear system.

Description of an excitation and vibration measurement system. Application to the performance of dynamic tests on physical models and on prototypes.

Teaching methods and learning activities

Theoretical lectures are used for the presentation of the main concepts and methodologies, duly complemented by the presentation of some applications, as well as of some experimental tests on physical models.
Practical lectures are essentially used go deeper inside the discussion and resolution of practical problems suggested in the theoretical lectures.

Evaluation Type

Evaluation with final exam

Observations

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Estimated working time out of classes: 4 hours