Đề cương động lực học - P16

Hiểu phương pháp giải bài tập động lực học. - Vẽ được hình biểu diễn các lực chi phối chuyển động của vật. 2. Kỹ năng - Biết vận dụng các định luật Niu-tơn để giải bài toán về chuyển đ

School of Civil Engineering, (SCE)

Semester Offering: August

CE72.21 : Structural Dynamics 3(3-0) [Elective course]

Rationale:

As modern structures are becoming more slender and light, they are also becoming more

susceptible to dynamic loadings Examples of real-life dynamic problems that frequently confront civil engineers include: aerodynamic stability of long-span bridges, earthquake response of multi-story buildings, impact of moving vehicles on highway structures, etc The traditional engineering solutions to these problems, based on "static force" and "static response", are no longer valid in most cases Many of these problems have to be tackled by applying knowledge of structural

dynamics Thus, a basic understanding of the dynamic behavior of structures as well as the

underlying principles is essential for structural engineers.

Catalog Description:

Dynamics of simple structures (single-degree-of-freedom systems); multi-degree-of-freedom structures; continuous structures; earthquake response; random vibrations; control of dynamic response

Pre-requisite(s):

None

Course Outline:

I Dynamics of Simple Structures

(single-degree-of-freedom systems)

1 Equation of motion

2 Free vibrations

3 Response to harmonic force

4 Response to periodic force

5 Response to arbitrary dynamic force

6 Nonlinear dynamic response

II Multi-Degree-Of-Freedom Structures

1 Formulation of matrix equations of motion

2 Analysis of free vibrations

3 Modal analysis and forced vibrations

4 Nonlinear dynamic response

III Continuous Structures

1 Partial differential equations of motions (for

strings, bars, beams)

2 Modal analysis

3 Wave propagation analysis

IV Earthquake Response

1 Response spectrum concept

2 Application to earthquake engineering

V Random Vibrations

1 Probability theory, random processes

2 Correlation and spectral density functions

3 Response to stationary random excitations

4 Crossing, peak distributions, extreme value analysis, evaluation of fatigue life

5 Application to wind engineering

VI Control of Dynamic Response

1 Overview of vibration control

2 Tuned Mass Dampers

3 Active control

Textbook:

Lecture notes provided by the instructor.

References:

R W Clough, and J Penzien, (1993):

Dynamics of Structures, McGraw-Hill, New York, 2nd Edition.

A K Chopra, (1995):

Dynamics of Structures-Theory and Applications to Earthquake Engineering, Prentice Hall,

New Jersey.

J W Smith, (1988):

Vibration of Structures: Applications in Civil Engineering Design, Chapman and Hall,

London.

T R Tauchert, (1974):

Energy Principles in Structural Mechanics, McGraw-Hill, ISE.

H Bachmann, and W Ammann, (1987):

Vibrations in Structures-Induced by Man and Machines, Series: Structural Engineering

Documents Vol 3e International Association for Bridge and Structural Engineering (IABSE), Zurich, Switzerland.

D E Newland, (1993):

An Introduction to Random Vibrations, Spectral and Wavelet Analysis, Longman, 3rd Edition,

London.

S H Crandall, and W D Mark, (1963):

Random Vibration in Mechanical Systems, Academic Press, New York.

Journals/Magazines/Websites:

Earthquake Engineering and Structural Dynamics.

Engineering Structures.

Grading System:

The final grade will be computed according to the following weight distribution: Mid-Semester Exam (30%), Assignments (20%), Final Exam (50%) Open book examination is used for both mid-semester and final exams.

Instructor(s):

A Dr Pennung Warnitchai

Course Structure

STE delivers three types of courses: basic, advanced and interdisciplinary Basic courses focus on the specific aspects of structural systems They are offered in five areas - (a)

Analysis and Computations (CE72.1x), (b) Dynamics of Structures (CE72.2x), (c)

Mechanics of Structures (CE72.3x), (d) Material Technology (CE72.4x), and (e) Structural Design (CE72.5x) While advanced and interdisciplinary courses (CE72.6x) address new frontiers or the integration of skills in a holistic manner and are designed specifically for doctoral or advanced master's students Advanced courses provide emerging concepts and techniques in Structural Engineering

In offering opportunity and choice, students can design their own study programs

according to their inclinations and future career objectives In addition to the courses

specified below, students, under the guidance of their academic advisors, can select courses from a wide range of electives from other fields/schools as part of an approved study plan August(First) Semester

CE72.11 Computer Methods of Structural Analysis Elective 3 credits

CE72.61 Nonlinear Finite Element Methods for Solids and Structures Elective 3 credits

January(Second) Semester

CE72.12 Finite Element Methods in Engineering Elective 3 credits CE72.22 Wind and Earthquake Engineering Elective 3 credits

CE72.42 Experimental Methods in Structural Engineering Elective 3 credits

CE72.51 Advanced Steel Structures Elective 3 credits

CE72.62 Forensic Engineering, Structural Evaluation and

Retrofitting of Structures Elective 3 credits

CE72.64 Fiber Reinforced Composite Structures Elective 3 credits

CE72.90 Advanced Topics in Bridge Engineering Elective 3 credits CE72.9003 Selected Topic: Introduction to Materials Science and Engineering Elective 3 credits CE72.9004 Selected Topic: New Concrete Materials and Special Concretes Elective 3 credits Inter-Semester Period

Institute-wide course/English or Computer-based course Elective 2 credits August(Third) Semester

Thesis Option

Thesis proposal preparation/defense and data/information collection 22 credits

Research Study Option

January(Fourth) Semester

Thesis Option

Research Study Option

Research study preparation and final research report defense

CE81.72 : Dynamics of Offshore Structures 3(3-0)

Rationale:

The objectives are to introduce the fundamental of oceanography, basic fluid mechanics, wave theory, hydrodynamics, naval architecture and structural analysis to meet the needs of offshore engineers involved with either fixed or floating offshore structures As well as equations and theoretical results, sections on model testing, full scale measurements, design and certification are included to ensure that the course presents a balanced treatment of fundamental and practical issues.

Catalog Description:

The ocean environment; Basic fluid mechanics; Gravity wave theories; Fluid loading on offshore structures; Structural response; Hydrostatics of floating bodies; Dynamic response of floating structures in waves; Model testing of offshore structures.

Pre-requisite(s):

None.

Course Outline:

I The ocean environment

1 Surface gravity water waves and

wave loading

2 Current and current loading

3 Wind and wind loading

II Basic fluid mechanics

1 Conservation of mass

2 Conservation of momentum

3 Circulation and vorticity

4 The stream function and velocity

potential

III Gravity wave theories

1 Introduction

2 Classification of waves

3 Breaking waves and wave theory

selection

4 Waves as random processes

5 Selection of design wave spectra

IV Fluid loading on offshore structures

1 Inertia coefficients

2 Drag coefficients

3 Wave forces on stationary slender members

4 Wave forces on moving members

V Structural responses

1 Reponses of single-degree-of-freedom systems

2 Responses of multi-degree-of-freedom systems

3 Responses of single column structures

4 Response of multi-leg gravity structures

5 Responses of lattice-type structures

VI Dynamic response of floating structures in waves

1 Hydrostatics of floating bodies

2 Linear response of moored-ship systems

3 Nonlinear response of moored-ship system

VII Model testing of offshore structures

1 Theory of structural models

2 Loading system and laboratory techniques

3 Instrumentation Principles and application

4 Accuracy and reliability of structural models

Textbook:

Lecture notes provided by the instructor.

References:

Clough, R W and Penzien J., (1993), Dynamics of Structures , McGraw-Hill , New York , 2

nd Edition

Chopra, A K., (1995), Dynamics of StructuresµTheory and Applications to Earthquake

Engineering , Prentice Hall, New Jersey

Blevins, R D., (1977), Flow-Induced Vibration , Van Nostrand Reinhold Company

Barltrop, N and Adams, A J., (1991), Dynamics of Fixed Marine Structures ,

Butterworth-Heinemann.

Journals/Magazines/Websites:

Earthquake Engineering & Structural Dynamics

Engineering Structures

Ocean Engineering

Coastal Engineering

International Journal of Offshore and Polar Engineering, ISOPE

Marine Structures; Design, Construction and Safety

Grading System:

The final grade will be computed according to the following weight distribution:

Mid-term Exam (30%),

Assignments (20 %),

Final Exam (50 %)

Opened-book examination is used for both mid-term and final exam

Instructor(s):

SECTION NAME

A Dr Joko Harsono Widjaja , Prof Laurie Boswell