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etc The traditional engineering solutions to these problems, based on "static force" and "static response", are no longer valid in most cases Many of these problems have to be tackled by applying knowledge of structural dynamics Thus, a basic understanding of the dynamic behavior of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):

Course Outline:

I Dynamics of Simple Structures degree-of-freedom systems)

(single-1 Equation of motion2 Free vibrations

3 Response to harmonic force4 Response to periodic force

5 Response to arbitrary dynamic force6 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 processes2 Correlation and spectral density functions3 Response to stationary random excitations4 Crossing, peak distributions, extreme value analysis, evaluation of fatigue life

5 Application to wind engineering

VI Control of Dynamic Response

1 Overview of vibration control2 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.

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,

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.

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 creditsCE72.22 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 creditsCE72.9003 Selected Topic: Introduction to Materials Science and Engineering Elective 3 creditsCE72.9004 Selected Topic: New Concrete Materials and Special Concretes Elective 3 creditsInter-Semester Period

Institute-wide course/English or Computer-based course Elective 2 creditsAugust(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.

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

3 Wave forces on stationary slender members

4 Wave forces on moving members

V Structural responses

1 Reponses of freedom systems

single-degree-of-2 Responses of freedom systems

multi-degree-of-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

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 ,

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

SECTION NAME

A Dr Joko Harsono Widjaja , Prof Laurie Boswell