Course detail

Calculation Models

FSI-QMOAcad. year: 2011/2012

The subject should serve as an introduction of the most important current calculation models used in the development of state-of-the-art combustion engines and vehicles to the students. The emphasis is laid upon the mathematical and physical foundations of calculation models and the respective software as well as the verification of results of the computer modelling by way of appropriate experimental methods. Conversion of volume models to 3-D models having carrier beams and point elements. Non-stationary loaded slide bearings in combustion engines, dynamic models. Computer models of power train mechanisms. Computer models of real working cycles of combustion engines. Thermodynamic analysis of an indicator diagram. Multidimensional models of combustion within the cylinder.

Language of instruction

Czech

Number of ECTS credits

5

Mode of study

Not applicable.

Guarantor

prof. Ing. Václav Píštěk, DrSc.

Department

Institute of Automotive Engineering (ÚADI)

Learning outcomes of the course unit

The course gives students the opportunity to learn about current computational models, applied at motor vehicles and ICE development. Students will gain the knowledge about periodic and aperiodic signal analysis, digital signal processing, complex 3D crank-train models, non-stationary loaded bearings dynamic, valve-timing mechanisms modelling and real working cycles of cylinder units.

Prerequisites

Matrix calculus, differential and integral calculus, differential equations. Technical mechanics, kinematics, dynamics, elasticity and strength. Fourier analysis and Fourier transformation. Finite Element Method fundamentals.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Teaching methods depend on the type of course unit as specified in the article 7 of BUT Rules for Studies and Examinations.

Assesment methods and criteria linked to learning outcomes

The course-unit credit requirements:
The orientation at physical fundamentals of presented problems and the knowledge of practical solving methods , leading to to individual work especially on a diploma thesis and in engineering practice after completing studies. The ability to solve problems using computer technology and necessary advanced software equipment. Students have to individually elaborate assigned tasks without significant mistakes. Together with evaluating them the continuous study checking is carried out.

Examination:
The course is concluded by a final test, as well as oral discussion .

Final evaluation consists of:
1. Evaluation of the individual work on seminars (individually elaborated tasks).
2. The results of written and oral parts of the exam.

Course curriculum

Not applicable.

Work placements

Not applicable.

Aims

The objective of the course is to make students familiar with state-of-the-art computational models, applied for solving various problems at motor vehicles and Internal Combustion Engines (ICE) development. The aim of the subject is to explain students mathematical and physical fundamentals of computational modelsthat are built up to ready-to-use software level for various problems.

Specification of controlled education, way of implementation and compensation for absences

Attendance in seminars is obligatory, checked by a teacher. The way of implementation and compensation of absence is solved individually with the subject guarantor.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Not applicable.

Recommended reading

Not applicable.

Classification of course in study plans

  • Programme M2I-P Master's

    branch M-ADI , 2. year of study, winter semester, compulsory-optional

Type of course unit

 

Lecture

26 hours, optionally

Teacher / Lecturer

prof. Ing. Václav Píštěk, DrSc.

Syllabus

1. Finite Element Method (FEM) applications in dynamic problems, FEM models conversion to MultiBody Systems (MBS).
2. MBS application at engine dynamic problems.
3. - 4. Dynamic vibration dampers as thermo-mechanical systems.
5. Pendulum eliminators of crankshaft torsional vibrations.
6. Internal combustion engines (ICE) non-stationary loaded slide bearings.
7. Bearing midpoint track and friction power computation.
8. Real ICE working cycle thermodynamic models.
9. Models of combustion and heat transfer at engine cylinder.
10. Models of fuel mixture exchange at ICE cylinder.
11. Indicator diagram thermodynamic analysis.
12. - 13. Zone and multidimensional cylinder unit thermodynamic models.

Computer-assisted exercise

26 hours, compulsory

Teacher / Lecturer

Ing. Pavel Ramík

Syllabus

1. Engineering computations and measurement, data acquisition using computer equipment. Oscillations and vibrations, data processing.
2. Orthogonal and orthonormal base of functions. Discrete Fourier Analysis at real and complex domain - 1st part. Computational algorithm.
3. Orthogonal and orthonormal base of functions. Discrete Fourier Analysis at real and complex domain - 2nd part. Practical implementation.
4. Orthogonal and orthonormal base of functions. Discrete Fourier Analysis at real and complex domain - 3rd part. Given signal analyses.
5. Fast Fourier Transform (FFT). Results modification.
6. "Windowing" application in Fourier Transformation.
7. Fourier analysis of tangential pressures.
8. Finite Element Method (FEM), application in automotive industry. Types of solved problems. CAD-FEM systems cooperation.
9. 3-D structural analyses of moving parts, practical approach - 1st part. Model import, linkage modeling.
10. 3-D structural analyses of moving parts, practical approach - 2nd part. Meshing. Boundary Conditions.
11. 3-D structural analyses of moving parts, practical approach - 3rd part. Movement definition. Solution. Results presentation.
12. 3-D structural analyses of moving parts, given state solution - 1st part. Load case definition, boundary conditions, loads.
13. 3-D structural analyses of moving parts, given state solution - 2nd part. Solution, results evaluation.