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Thermal stress, creep and viscoplasticity

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Course Unit Code330-0545/01
Number of ECTS Credits Allocated4 ECTS credits
Type of Course Unit *Compulsory
Level of Course Unit *Second Cycle
Year of Study *Second Year
Semester when the Course Unit is deliveredWinter Semester
Mode of DeliveryFace-to-face
Language of InstructionCzech
Prerequisites and Co-Requisites Course succeeds to compulsory courses of previous semester
Name of Lecturer(s)Personal IDName
HAL22prof. Ing. Radim Halama, Ph.D.
Summary
The subject deals with elementary theoretical and practical knowledge from region behavior of materials and constructional elements under elevated temperatures, when thermoelasticity, creep or relaxation is situated. There are discussed topics including the basis from physics of materials, testing of materials, life-time prediction, etc.
Learning Outcomes of the Course Unit
To teach students the basic procedures for solving some technical problems of the continuum mechanics. To ensure understanding of such teaching problems. To learn our students to apply of theoretical knowledge in praxis.
Course Contents
1. Basic terms, material and temperature, thermomechanics
2. Thermal stresses in trusses and beams
3. Heat transfer
4. Basic equations of thermoelasticity
5. Thermal stress at multiaxial stress
6. Creep mechanisms, creep and relaxation tests, influence of strain rate
7. Secondary creep, Arrhenius equation, Sherby-Dorn and Larson-Miller parameters
8. Creep models used in FEM calculations
9. Viscoplassticity - Peirce model, Perzyna model
10. Viscoplassticity - EVH model, Anand model
11. Prager, Besseling, Armsrtong-Frederick and Chaboche models with influence of temperature
12. Combination of plasticity and creep - unified and nonunified models
13. Thermomechanical fatigue
14. Applications in additive technologies
Recommended or Required Reading
Required Reading:
[1] NETO, E.A. de Souza, PERIČ, D., OWENS, D.R.J. Computational methods for plasticity: theory and applications. Wiley, 2008.
[2] BARRON, R.F., BARRON, B.R. Design for Thermal Stresses. John Wiley & Sons, Inc., 2012.
[3] LEWIS, R.W., NITHIARASU, P., SEETHARAMU, K.N. Fundamentals of the Finite Element Method for Heat and Fluid Flow. John Wiley & Sons Ltd, 2004.
[1] ČADEK, J. Creep kovových materiálů, Academia Praha, 1984
[2] KLEČKOVÁ, M. Nestacionární teplotní pole a napjatost ve strojních částech,SNTL Praha,1979
[3] KULIŠ, Z. Plasticita a creep, skriptum ČVUT FS Praha, 1986
[4] NETO, E.A. de Souza, PERIČ, D., OWENS, D.R.J. Computational methods for plasticity: theory and applications. Wiley, 2008.
Recommended Reading:
[1] LEWIS, R.W., NITHIARASU, P., SEETHARAMU, K.N. Fundamentals of the Finite Element Method for Heat and Fluid Flow. John Wiley & Sons Ltd, 2004.
[2] CHEN, X., LIU, Y. Finite Element Modeling and Simulation with ANSYS Workbench. CRC Press, 2015, 389p.
[1] BARRON, R.F., BARRON, B.R. Design for Thermal Stresses. John Wiley & Sons, Inc., 2012.
[2] LEWIS, R.W., NITHIARASU, P., SEETHARAMU, K.N. Fundamentals of the Finite Element Method for Heat and Fluid Flow. John Wiley & Sons Ltd, 2004.
[3] CHEN, X., LIU, Y. Finite Element Modeling and Simulation with ANSYS Workbench. CRC Press, 2015, 389p.
Planned learning activities and teaching methods
Lectures, Tutorials
Assesment methods and criteria
Task TitleTask TypeMaximum Number of Points
(Act. for Subtasks)
Minimum Number of Points for Task Passing
Credit and ExaminationCredit and Examination100 (100)51
        CreditCredit35 20
        ExaminationExamination65 25