Design and simulation of production machines
- Garant předmětu:
- Petr Kolář, Matěj Sulitka
- Josef Kekula, Petr Kolář, Tomáš Lazák, Matěj Sulitka
- Department of Production Machines and Equipment
Introduction to modeling the structural properties of production machines. Modeling the static and dynamic behavior of production machines in interaction with the production process. The use of selected analytical models and the basics of finite element modeling for the analysis of structural properties and evaluation of the construction of a production machine with respect to its load in the production process.
Basic knowledge of mechanics (statics, dynamics, kinematics). Basic knowledge of MATLAB.
- Syllabus of lectures:
1. Motivation of modeling and simulation of production machines. Loading of the production machine structure of the machine by process forces and heat.
2. Static and modal properties of discrete mechanical systems.
3. Damping of structures of production machines. Frequency dependent dynamic flexibility - calculation and measurement.
4. Cutting forces as a source of external force load of the machine.
5. Introduction to self-excited oscillations.
6. Engineering introduction to machine modeling using the finite element method (FEM).
7. Objectives of FEM tasks in the field of production machines.
8. Creation of computational models and definition of boundary conditions. Structural and thermo-mechanical tasks.
9. Submodels of nodes and elements of the supporting structure of the machine. Modeling of connections, joints and drive mechanics.
10. Transformation and reduction of FEM models of load-bearing structures for the creation of interconnected models with drive mechanics.
11. Calculations of structural properties and interpretation of results in relation to the interaction of the machine with the production process and taking into account the behavior of the machine in the design.
12. Selected case studies from practice. Summary of context.
13. Presentation of semester works. Credits.
- Syllabus of tutorials:
Examples in Matlab: Static and modal properties of discrete mechanical systems. Frequency transfer function. Modeling of cutting forces in the geometric, time and frequency domains. Calculation of machining stability diagrams for a defined process.
Examples in Ansys Workbench: Basics of FEM modeling in ANSYS, preparation of CAD geometry and creation of a computer network. Bonding conditions, replacement models of rolling guides, bearings and drive mechanics. Parameterization of kinematic configuration of machine motion groups. Definition of boundary conditions. Structural tasks of simplified models of parts and systems of the supporting structure of the machine (statics, modal analysis). Solution and evaluation of the results of the semester work and interpretation of the results.
- Study Objective:
To learn students about the process-machine interaction. Explanation of the relationship between the construction of the machine, its static and dynamic properties and its behavior under heat and forces from the process.
- Study materials:
- Fenner, R.T.: Finite Element Methods for Engineers (2nd edition). London, Imperial College Press, 2013. ISBN 978-1-84816-886-2
- Hughes, T.J.R.: The Finite Element Method: Linear Static and Dynamic Finite Element Analysis. Prentice-Hall, 2000. ISBN: 978-0-48641-181-1
- Schmitz, T.L., Smith, K.S.: Machining Dynamics: Frequency Response to Improved Productivity. New York, Springer, 2009. ISBN 978-0-387-09644-5
- Learning material on MOODLE CTU.
- Time-table for winter semester 2023/2024:
Mon Tue Wed ThuroomHO:A-139
Laboratoř NC řízení a automati
- Time-table for summer semester 2023/2024:
- Time-table is not available yet
- The course is a part of the following study plans: