Structural Analysis Structural Analysis - Classical and Matrix Approach by Jack C. McCormac and R. E. Elling - Elementary Structural Analysis 4th Ed. by C. H. Norris - Statically Indeterminate Structures by Chu-Kia Wang SNUSEA

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  • Hi, Folks ! Welcome to

    Structural Analysis I

    Hae Sung LeeStructural Analysis Lab, Dept. of Civil and Environmental Eng.

    Seoul National UniversitySpring Semester, 2011

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Whos who ? Instructor : Lee, Hae Sung ()

    Office : 35-408

    Tel : 880-8388

    e-mail : chslee@snu.ac.kr

    Hompage : http://strana.snu.ac.kr

    TA : Goh, Heedong/Lee, Hohyun (32-303, 1538)() ()

    Class Hours : Wed. 17:00-18:40Fri. 17:00-17:50Fri. 18:00-18:50 (Practice)

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Text & Other Tools

    Class note by Instructor

    Reference- Structural Analysis - Classical and Matrix Approachby Jack C. McCormac and R. E. Elling

    - Elementary Structural Analysis 4th Ed. by C. H. Norris- Statically Indeterminate Structures by Chu-Kia Wang

    SNUSEA

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Class Contents Introduction of Structural Analysis (1)

    Types of Structures and Supports (1)

    Free-Body Diagram (2)

    Forces and Moments and Their Diagram (2-3)

    Analysis of Various Statically Determinate Structures (4-5)

    Virtual Work Principles and Related Issues (6-8)

    Introduction of Statically Indeterminate Structures (9)

    Flexibility Method for Analyzing Statically IndeterminateStructures (10-13)

    Influence Lines (14-16)

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Evaluation 2 Mid Term Exams(April 8, May 13) : 40 %

    Final Exams (June 16, 16:00-19:00) : 30 %

    Home work and attendance : 30 %

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Aah.Structural Analysis !!

    1

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Structure ?? Definition by Late Prof. Shin

    Thing built to safely withstand all possible external forces applicable during itsexpected lifetime by properly connecting solid materials with various shapesaccording to its purpose.

    Definition by Live Prof. LeeEverything made by solid materials that you can see !!!

    Types Mobile structures : Cars, Airplanes, shipFixed structures : Civil structures (social infrastructures) & Buildings

    Purpose : Bridge, Dam, Tunnel, Building

    Material : Wooden, Steel, Concrete

    Mechanical Behavior : Beam, Truss, Arch, Frame

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Human BodyThe most sophisticated structures in the world designed by God!!!

    Shell

    Beam

    Arch

    Column

    Footing

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Force Newtons Second Law of Motion

    Gravity Newtons Law of Gravitation:

    Dynamic Force :

    Water, Earth and Wind Pressure

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    City & Structure (1)

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    City & Structure (2)

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Bridge (1)

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Bridge (2)

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Bridge (3)

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Building (1)

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Building (2)

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Building (3)

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Cultural Facility (1)

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Cultural Facility (2)

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Troublesome Structures

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Different Structures with same idea

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Different Structures with same idea

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Classification Mechanical Behaviors

    - Beam ()- Truss ()- Frame ( , Rahmen)- Arch- Plate and Shell ( )- General Continuous structures ( )

    Analysis Method (existence of redundancy)- Statically Determinate ()- Statically Indeterminate ()

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Beam

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Truss

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Frame

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Arch

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Structural Engineering ?? Objective

    - Design and construction of structures- Management, maintenance and rehabilitation of structures

    Tools- Solid and applied mechanics- Mathematics and numerical methods- Experiences, experiments and statistical data

    In Consideration of - Safety and economics- Manageability, maintenance and rehabilitation- Harmony with surroundings (environmental and aesthetic)

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Engineering Design ?

    Trial SystemInput Response

    SatisfyDesign Criteria ?No !!

    Modify System

    Yes !!

    Final System

    Analysis

    Satisfy Budget ?No !! Yes !!

    Design

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Sequence of Structural Construction Feasibility Study

    - Economical and Engineering Aspects

    Determination of Structural type and Material

    Structural Analysis

    Preliminary Design

    Main Design

    Construction- Design and construction of temporary structures- Construction management- Design change

    Management and Maintenance

    Design Process

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Structural Analysis ??? Objective

    - Calculation of structural responses such as stress, strain anddisplacement for given structural properties and external loadingconditions

    Purpose- To calculate structural responses as accurately as possible for all

    loading conditions applicable during the lifetime of a structure forthe design of a safe and economical structure.

    Tools- Healthy body and Smart Brain (Study)- Mathematics (Linear algebra, Calculus, Differential Equation...)- Physics (Statics and Dynamics- Numerical Method (Computer)- Experiments

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Classification of Classic Mechanics

    Mechanics( )

    Granular Mechanics( )

    Thermo Mechanics( )

    Solid Mechanics( )

    Fluid Mechanics( )

    Structural Analysis( )

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Classification of Engineering Problems Direct Problems : (k u) = f (Analysis)

    Inverse Problems : Reconstruction

    Inverse Problems : System Identification

    SystemInput Response

    SystemInput Measured Response

    SystemInput Measured Response

    ErrorError

    Error

    Error

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Types of Structural Analysis Loading Speed

    - Static analysis : neglecting inertia force- Dynamic analysis : with inertia force

    Unknowns- Flexibility method : Forces are unknown.- Stiffness method : Displacement is unknown.

    Tool- Classic method : (pensile + Paper + Brain + Hand)- Computational method : (+ Computer)

    Distribution of Unknowns- Discrete structure (ODE)- Continuous structure (PDE)

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Structural Division ofDept. of Civil and Environmental Eng.

    Seoul National University

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Professors

    Prof. Hyun Moo KohStructural Engineering Lab.http://sel.snu.ac.kr

    Prof. Jae Kwan KimStructural Dynamics Lab.http://dyna.snu.ac.kr

    Prof. Hae Sung LeeStructural Analysis Lab.http://strana.snu.ac.kr

    Prof. Jae Yeol ChoConcrete Structures Lab.http://concrete.snu.ac.kr

    Prof. Ho Kyung KimStructural Design Lab.http://bridge.snu.ac.kr

  • Structural Analysis Lab

    Seoul National University

    http://strana.snu.ac.kr

    Course Semester Title Contents

    Under-

    graduate

    2-1

    2-2

    3-1

    3-2

    4-1

    Mechanics of Materials

    Applied Dynamics

    Structural Analysis 1

    Structural Analysis 2

    Structural Information Eng.

    Statics

    Dynamics

    Flexibility Method

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