Course detail

Simmulation in Automotive Industry

FSI-QPAAcad. year: 2020/2021

This course makes students familiar with the most important current computational models used for the development of state-of-the-art powertrains and motor vehicles. The stress is laid upon the mathematical and physical rudiments of calculation models and the respective software as well as the verification of results of the computer modelling by way of appropriate experimental methods. Finite Element Method (FEM) application, types of tasks in automotive technology. Dynamic multi-degree-of-freedom systems, modal analysis. Computational analysis of multi-degree-of-freedom forced oscillations. Experimental modal analysis and motion shape analysis. Torsional systems dynamics, natural frequency, forced oscillations. Torsional systems and transmissions, elastic couplings in torsional systems. Crankshaft torsional vibrations, energetic computational methods. Dynamic systems tuning, dynamic dampers application. Elastic machine bedding, elasticity midpoint, central axis of elasticity. Continuum dynamics fundamentals, longitudinal spar oscillations, wave equation. Beam bending oscillations, shaft wheeling oscillations. Membrane and plate oscillations. Acoustic problems.

Learning outcomes of the course unit

Learning outcomes of the course unit The course Simulation in Automotive Industry enables students to gain knowledge of contemporary computational models applied in the design of power units and vehicles, dynamic and strength analysis of mechanical structures and in solving problems in the field of heat conduction and acoustics.

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.

Recommended optional programme components

Not applicable.

Recommended or required reading

GEBHARDT, Christof. Praxisbuch FEM mit ANSYS Workbench: Einführung in die lineare und nichtlineare Mechanik. 3., aktualisierte Auflage. München: Carl Hanser Verlag, 2018. ISBN 978--3-446-45001-1. (DE)
CHEN, Xiaolin a Yijun LIU. Finite element modeling and simulation with ANSYS workbench. Second edition. Boca Raton: Taylor & Francis, 2018. ISBN • isbn:9781138486294. (EN)
Internal combustion engine handbook: basics, components, systems, and perspectives, second edition. Warrendale, PA: SAE International, 2016. ISBN 9780768080247. (EN)
TIWARI, Rajiv. Rotor systems: analysis and identification. Boca Raton: CRC Press, Taylor & Francis Group, 2018. ISBN 9781138036284. (EN)
TU, Jiyuan, Guan Heng YEOH a Chaoqun LIU. Computational fluid dynamics: a practical approach. Third edition. Cambridge, MA: Butterworth-Heinemann, 2018. ISBN 9780081011270. (EN)
FUCHS, Anton: Automotive NVH technology. New York, NY: Springer Berlin Heidelberg, 2015. ISBN 978-3-319-24053-4. (EN)

Planned learning activities and teaching methods

The course is taught through lectures explaining the basic principles and theory of the discipline. Exercises are focused on practical topics presented in lectures.

Assesment methods and criteria linked to learning outcomes

Requirements for Course-unit credit award:
The orientation within problems discussed and the ability of solving them, examined by working-out assigned tasks without significant mistakes, . Continuous study checking is carried out together with given tasks verification.
Examination:
The exam verifies and evaluates the knowledge of physical fundamentals of presented problems, theirs mathematical description on a presented level and application to solved tasks. The exam consists of a written part (test) and if necessary an oral part.
Final evaluation consists of:
1. Evaluation of the work on seminars (elaborated tasks).
2. Result of the writing part of the exam (test), eventually oral part.

Language of instruction

Czech

Work placements

Not applicable.

Aims

The objective of the course is to male students familiar with actual computational models applied for solving various types of tasks related to powertrain and motor vehicles development. The aim of the course is to explain students mathematical and physical fundamentals of computational models, which are very often built up to ready-to-use software level.

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

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

Classification of course in study plans

  • Programme N-ADI-P Master's, 1. year of study, winter semester, 6 credits, compulsory-optional

Type of course unit

 

Lecture

26 hours, optionally

Teacher / Lecturer

Syllabus

1. Computational modeling in the automotive industry.
 2. Finite element method in linear continuum mechanics.
 3. Application of finite element method to solving structural and thermal problems.
 4. Dynamic models of piston machines, natural frequencies and vibration shapes.
 5. Forced oscillation of piston machines, energy calculation methods.
 6. Dynamics of automotive systems with gears.
 7. Discrete dynamic systems with multiple degrees of freedom, modal analysis.
     Modal transformation, main coordinates. Fundamentals of experimental modal analysis.
 8. Forced oscillation, solution in time and frequency domain. Computation in real and complex variables, complex amplitude method.
 9. Tuning of dynamic systems, dynamic vibration dampers in automotive technology.
10. Pendulum eliminators in automotive technology.
11. Flexible machine placement, center of elasticity, main axes of elasticity.
12. Fundamentals of continuum dynamics, longitudinal oscillation of bars, wave equation.
13. Bending vibration of beams, circular oscillations of the shaft, vibration of membranes and plates. Acoustic tasks.

Computer-assisted exercise

39 hours, compulsory

Teacher / Lecturer

Syllabus

1) Introduction of Finite Element (FE) Analysis software.
2) How to solve a problem using FE software. Model preparation, solution and evaluation of results.
3) Creation, import and modification of geometrical models. Creation of geometrical model of turbocharger housing part.
4) Discretization of surface geometric models. Creation of surface FE model of car body part.
5) Boundary conditions and loads. Computation of turbocharger impeller stress due to rotation.
6) Discretization of volume geometric models. Creation of crankshaft FE model.
7) Computation of the crankshaft torsional stiffness. Stress evaluation. Comparison of results with analytical calculations.
8) Creation of piston computational model. Computation of temperature distribution in piston.
9) Computation of piston stress and deformation due to thermal load.
10-12) Independent work on strength analysis of vehicle components.
13) Evaluation of term paper.

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