# 101-0617-02L  Computational Science Investigation for Material Mechanics

 Semester Autumn Semester 2021 Lecturers D. Kammer, F. Wittel Periodicity yearly recurring course Language of instruction English

### Courses

NumberTitleHoursLecturers
101-0617-02 SComputational Science Investigation for Material Mechanics2 hrs
 Wed 08:00-09:35 HIL E 7 »
D. Kammer, F. Wittel

### Catalogue data

 Abstract Introduction to computational sciences with focus on numerical modeling of the mechanics of materials. Simulation of material damage and failure with advanced finite element methods. Objective Learning from mistakes and failures is as old as the engineering discipline. Understanding why things went wrong is essential for improvement, but often impossible without the help of numerical modelling. Real world problems are often highly nonlinear, dependent on multiple physical fields, involve fundamental material behavior far from equilibrium and reversibility, and can often only be understood by addressing different relevant scales.In this course, we will use real-life cases to learn how to deal with such problems. Starting from the problem description with governing equations, you will learn how to tackle non-linear and multi-field problems using numerical simulations. A particular focus will be on fracture. Starting from the failed state, we will investigate potential causes and find the conditions that resulted in failure. For doing so, you will learn how to predict it with the Finite Element Method (FEM). To correctly assess failure, plastic behavior and size effects, originating from the underlying material microstructure, need to be considered. You will learn how to deal with plasticity in FEM and how you can get information from the heterogeneous material scale into your FEM framework. Content 1 Introduction to (numeric) forensic engineering2 The nature of engineering problems (governing equations)3 Numerical recipes for dealing with non-linear problems4 Multi-field problems (HTM; Comsol)5 On the nature of failure - Physics of damage and fracture6 Cracks and growth in structures (LEFM and beyond)7 A practical approach to LEFM with FEM (Abaqus)8 Introduction to metal plasticity9 Damage and fracture in heterogeneous materials10 Mechanics of fatigue11 Visco-elastic failure12 Student μ-Project presentation Lecture notes Will be provided during the lecture via moodle. Literature Will be provided during the lecture.

### Performance assessment

 Performance assessment information (valid until the course unit is held again) Performance assessment as a semester course ECTS credits 4 credits Examiners D. Kammer, F. Wittel Type session examination Language of examination English Repetition The performance assessment is offered every session. Repetition possible without re-enrolling for the course unit. Mode of examination oral 30 minutes Additional information on mode of examination The compulsory continuous performance assessment task (consisting of micro projects) need not to be passed on its own; it is awarded a grade which counts proportionally towards the total course unit grade (i.e. 40%). The micro projects may be performed in groups of two. This information can be updated until the beginning of the semester; information on the examination timetable is binding.

### Learning materials

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### Groups

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### Restrictions

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### Offered in

ProgrammeSectionType
Civil Engineering MasterMajor in Structural EngineeringW
Civil Engineering MasterMajor in Materials and MechanicsW
Civil Engineering MasterDigitalisation Specific CoursesW