16-08-5120-vl Behaviour of High Temperature Materials and Components

Instructors: Prof. Dr.-Ing. Matthias Oechsner

Event type: Lecture

Org-unit: Dept. 16 - Mechanical Engineering

Displayed in timetable as: HochtempWerkstoff

Subject:

Crediting for:

Hours per week: 3

Language of instruction: Englisch

Min. | Max. participants: - | -

Course Contents:
Material modelling

• Cyclic, rate-independent plasticity: hardening, Bauschinger-effect, Masing-behavior, Memory-behaviour (Cyclic Plasticity)
  
• Description of temperature induced, rate-dependant plasticity resp. viscoplasticity (Creep)
  
• General structure and categories of material models within the structural mechanic simulation approach „Finite Element Method“ (FEM)
  
• Implementation of Cyclic Plasticity and Creep within the FEM: Incremental Theory vs. Deformation Theory
  
• Example application within the FEM-Software ANSYS and ABAQUS
  

• Introduction of the term „Damage“ & microstructural aspects
  
• Basics with regard to effects like: mean stress, multiaxiality and superposed loading
  
• Phenomenological description of creep-fatigue interaction
  
• Constitutive, unified material- and damage models
  
• Example application „Lifetime Analysis of a component“
  

• Recap of Fracture Mechanic fundamentals
  
• Creep Fracture Mechanics: Basics
  
• Description and relevance of Crack Closure: forms, analytical and numerical approaches
  
• Numerical description of cracks within the FEM in 2D and 3D
  
• Example application „Assessment of a real component crack“ with ANSYS and ABAQUS