CIV-E4080 - Material Modelling in Civil Engineering D, Lecture, 24.4.2023-7.6.2023

Topic outline

• Course Lecturer's Reading Material [2022]
  Reading materials and lectures 

  
  

  The readings are primarily from the textbooks (the assigned chapters).
  

  
  

  The illustrated material I am adding (the long pdfs of lectures) are not  lecture slides, they  are  a source of knowledge and helping us to keep the lectures within the topics and you can read them as you wish.

  
  

  -Djebar
  

  • Select activity Detailed content of the Reading Supporting Material

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    Detailed content of the Reading Supporting Material Folder
  • Select activity A complete and concise course on Material Modeling by Prof. Reijo KOUHIA (TAU)

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    A complete and concise course on Material Modeling by Prof. Reijo KOUHIA (TAU) Folder
  • Select activity Guest lecture 17.5 - 14-16: "On modelling creep, creep-fracture and fatigue of metals" by Prof. Reijo KOUHIA (TAU)

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    Guest lecture 17.5 - 14-16: "On modelling creep, creep-fracture and fatigue of metals" by Prof. Reijo KOUHIA (TAU) Folder

    On modelling creep, creep-fracture and fatigue of metals

    Reijo Kouhia
    Tampere University, Structural Mechanics
    

    P.O. Box 600, FI-33014 Tampere University (Hervanta campus)

    
    

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    Join Zoom Meeting
    https://aalto.zoom.us/j/6917316571
    

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    This lecture discusses development of a thermodynamically consistent model for creep and
    creep-damage and creep-fatigue analysis. The model is based on two thermodynamic potentials,
    the Helmholtz free energy and the complementary form of the dissipation potential and it can
    be proven to fullfil the dissipation inequality. Construction of these potentials are detailed.
    Continuum damage model with scalar damage variable is used to facilitate simulations
    with tertiary creep phase. The complementary dissipation potential is written in terms of the
    thermodynamic forces dual to the dissipative variables of creep strain-rate and damage-rate.
    The model accounts for the multiaxial stress state and the difference in creep rupture time
    in shear and axial loading as well as in tensile and compressive axial stress. In addition, the
    model is simple and only four to eight material model parameters are required in addition to the
    elasticity parameters. If necessary, primary creep processes can be modelled using a hardening
    

    rule for the drag stress.

    
    

    A specific version of the proposed model is obtained when constrained to obey the
    Monkman-Grant relationship between the minimum creep strain-rate and the creep rupture
    time. The applicability of the Monkman-Grant hypothesis in the model development is dis-
    

    cussed.

    
    

    Examples on creep fatigue analysis of steam boiler superheater made of T24 steel and
    operating within a temperature range from 500 to 600 celcius are presented.
    

  • Select activity Guest lecture 25.5 - 12-14: "Damage continuum plasticity for Concrete" - applications of extreeem loading

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    Guest lecture 25.5 - 12-14: "Damage continuum plasticity for Concrete" - applications of extreeem loading Folder

    Lecture by Dr. Alexis Fedoroff (VTT)

     25.5  ---> 12-14:

    
    

    Join Zoom Meeting
    https://aalto.zoom.us/j/65265020137

    Meeting ID: 652 6502 0137
    
    

  • Select activity 1: [Notes]: Introduction - what is material modeling? Why it is needed? Examples of constitutive models

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    1: [Notes]: Introduction - what is material modeling? Why it is needed? Examples of constitutive models Folder
  • Select activity 2: [Notes, 2022]: Stress Invariants (recall)

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    2: [Notes, 2022]: Stress Invariants (recall) Folder
  • Select activity 3: [Lec notes, 2022]: Elasticity

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    3: [Lec notes, 2022]: Elasticity Folder
  • Select activity 4: [Lec notes, 2022]: Visco-elasticity

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    4: [Lec notes, 2022]: Visco-elasticity Folder
  • Select activity 5: [Lec notes, 2021]: Engineering Plasticity

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    5: [Lec notes, 2021]: Engineering Plasticity Folder
  • Select activity 6: [Lec notes, 2020]: Modelling failure of wood - guest presentation by doctoral candidate DI Joonas Jaaranen

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    6: [Lec notes, 2020]: Modelling failure of wood - guest presentation by doctoral candidate DI Joonas Jaaranen Folder
  • Select activity Visiting Lecture of Adj. Prof. Saksala on Quasi-Brittle Materials

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    Visiting Lecture of Adj. Prof. Saksala on Quasi-Brittle Materials File PDF
  • Select activity Visiting Lecture of Prof. Reijo KOUHIA - Tampere University 10.5.2022

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    Visiting Lecture of Prof. Reijo KOUHIA - Tampere University 10.5.2022 File PDF
  • Select activity Lecture slides by two visiting lecturers: 1) [Scientist, Dr Alexis FEDOROFF]: Damage coupled with Plasticity for concrete 2) [Senior scientist (vtt) Dr FORTINO, Stefania]: Hygro-thermo-mechanical model for wood

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    Lecture slides by two visiting lecturers: 1) [Scientist, Dr Alexis FEDOROFF]: Damage coupled with Plasticity for concrete 2) [Senior scientist (vtt) Dr FORTINO, Stefania]: Hygro-thermo-mechanical model for wood Folder
  • Select activity Reading Material (articles, lecture-notes, Abaqus, ...)

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    Reading Material (articles, lecture-notes, Abaqus, ...) Folder

    Material

    • Lecturer's written material to help students reading the the choisen subject from the textbooks

    • Abaqus theory manual and examples
    • various articles
      
    • various lecture-notes from other universities

    
    

    M-files for integrating the ODE of visco-elasticity