|
Instructors: Dr.-Ing. Christian Kontermann
Event type:
Exercise
Org-unit: Dept. 16 - Mechanical Engineering
Displayed in timetable as:
High Temperature II
Subject:
Crediting for:
Hours per week:
0,5
Language of instruction:
Englisch
Min. | Max. participants:
- | -
Digital Teaching:
The exercise session will be held in presence (if the then active pandemic-session will allow this). Alternatively, the exercise session will be given live via zoom as a lecture addition.
Course Contents:
Syllabus
A: Material modelling: 1: Cyclic, rate-independent plasticity: hardening, Bauschinger-effect, Masing-behavior, Memory-behaviour (Cyclic Plasticity); 2: Description of temperature induced, rate-dependant plasticity resp. viscoplasticity (Creep); 3: General structure and categories of material models within the structural mechanic simulation approach „Finite Element Method“ (FEM); 4: Implementation of Cyclic Plasticity and Creep within the FEM: Incremental Theory vs. Deformation Theory; 5: Example application within the FEM-Software ANSYS and ABAQUS
B: Damage & Lifetime: 1: Introduction of the term „Damage“ & microstructural aspects; 2: Basics with regard to effects like: Mean stress, multiaxiality and superposed loading; 3: Phenomenological description of creep-fatigue interaction; 4: Constitutive, unified material- and damage models; 5: Example application „Lifetime Analysis of a component“
C: Numerical Fracture Mechanics: 1: Recap of Fracture Mechanic Fundamentals; 2: Creep Fracture Mechanics: Basics; 3: Description and Relevance of Crack Closure: forms, analytical and numerical approaches; 4: Numerical description of cracks within the FEM in 2D and 3D; 5: Example application „Assessment of a real component crack“ with ANSYS and ABAQUS
Literature:
- Kontermann C., Oechsner M.: Lecture Slides
- Webster G.A., Ainsworth R.A. (1994): High Temperature Component Life Assessment, Chapman & Hall
- Maier H.J., Niendorf T., Bürgel R. (2019) Handbuch Hochtemperatur-Werkstofftechnik. Springer Vieweg, Wiesbaden
- Rösler J., Harders H., Bäker, M. (2019) Mechanisches Verhalten der Werkstoffe, Springer-Verlag
- Lemaitre J., Chaboche J.-L. (2000): Mechanics of solid materials, Cambridge University PressGross D., Seelig T. (2007): Bruchmechanik, Springer
Preconditions:
Bachelor MPE, Lecture High Temperature Materials recommended
Expected Number of Participants:
20
|
