636-0808/01 – Modeling and Simulation of Damage Processes in Structural Materials (MaSPPM)
| Gurantor department | Department of Material Engineering | Credits | 6 |
| Subject guarantor | prof. Ing. Bohumír Strnadel, DrSc. | Subject version guarantor | prof. Ing. Bohumír Strnadel, DrSc. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2004/2005 | Year of cancellation | 2015/2016 |
| Intended for the faculties | FMT | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
- Clarify methods of components material damage in operational conditions;
- Outline material damage mechanisms by mechanical and deformation origin of cyclic loading and by environment influence;
- Outline fundamental elements of the long time management system of components operation;
- Explain of corrosive environment influence on fatigue of materials;
- Compare approach of mathematical modeling of material damage with non-destructive or destructive testing approach;
- Apply probability approach on determination of material damage level and trends;
- Design of diagnostic system for running up-to-date of the level and trends of material damage in operational conditions;
- Assess the results received by diagnostic system from point of view asked reliability of structures.
Teaching methods
Lectures
Tutorials
Summary
The lecture introduces students to the basics of modeling stress deformation and fracture behavior of structural materials. Microstructural models of material damage and application of local approach methods are the basis for predicting time the limit state of plastic deformation, brittle unstable
quarries creep, low cycle fatigue and vysokocyklové. Related reading numerical solution methods and examples of the behavior of selected types of components when exposed to these processes, illustrative of damage depending on the time and load design shows the evolution of these processes and allows estimation of the moment of limit state design. Knowledge of numerical models of damage are the basis for their design simulations in selected structures
construction materials for typical uses. At the end of lectures are presented some selected technical applications process modeling damage for different variants of the choice of material intended for the production of one and the same components.
Compulsory literature:
[1]Klesnil M., Lukáš P. : Fatigue of metallic materials, Czechoslovak
academy of sciences, Academia Praha 1992.
Recommended literature:
[1] Barsom J.M., Rolfe S.T. : Fracture and fatigue control in structures,
Applications of fracture mechanics, ASTM, Woburn MA, USA, 1999.
[2] Lemaitre J., Chaboche J.L. : Mechanics of solid materials, Cambridge
university press, 1994.
[3] Knott J.F, Withey P.A : Fracture mechanics, worked examples, institute of materials, London 1993.
[4] Lemaitre, J.: Handbook of materials behavior models, Academic Press,
San Diego, CA 2001.
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
There are no further special requirements.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
1st Processing of input data for modeling the structure of construction materials
2nd Models of some selected structures of composite materials and prediction their properties
3rd Models of local micromechanisms of damage initiation cleavage and ductile Crack
4th Models of voltage-mechanical deformation behavior makroskopiských properties
5th Models of viscoelastic behavior of polymers
6th Modeling time-dependent degradation processes of fatigue and creep
damage
7th Simulation of combinatorial effects of thermal fatigue and creep
8th Models of contact fatigue of functional contact surfaces
9th Statistical methods for assessing material limit states
10th The basic concept of rating the size factor
11th Numerical models of fracture behavior of structural materials
12th Simulation of damage components degradation processes
13th Practical application of fracture mechanics and residual life estimates components
Exercise
1st Introductory training, requirements, a summary study of literature,
summary of the basic knowledge of degradation processes of construction materials, metal physics and mathematical statistics required for mastering the subject
2nd Discussions of basic relationships between the microstructural characteristics construction materials and their mechanical properties, the consequences of reliability of components
3rd Basic statistical methods for evaluation of processes and their application to stable crack growth, the creation of fracture instability and the mechanisms fatigue damage and creep
4th Practical verification of the basic laws of the two-phase stereology
polycrystalline metal structures
5th Examples of determination of some statistical characteristics of the microstructure construction materials, application of statistical methods of evaluation character of fracture surfaces
6th Examples for the calculation of the statistical distribution of local strength and microstructural fracture characteristics using microstructural models localized damage
7th Detailed presentation and commentary on the method of prediction of the temperature dependence fracture toughness and its application to a selected structure construction steel
8th Application of optimization methods for microstructural parameters
systematic development of new types of construction materials
9th Their application to selected examples of composites
10th Simulation of the development process violation quarry construction materials and discussion on the application of these methods in engineering practice.
11th Examples of technical computing and model the time dependence of reliability components subjected to degradation processes and effects optimization of life.
12th Solved examples of application of methods of modeling features and reliability materials in engineering practice.
13th Inspection work
14th Inspection results, credit.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction