Czech

6

prof. Ing. Milan Forejt, CSc.

Institute of Manufacturing Technology

The course offers students the knowledge necessary for simplified mathematical representation of forming processes while applying the physical, chemical, mechanical and thermodynamic principles of metallic bodies changing from the elastic into the plastic state, and when these bodies are plastically deformed into the required shape. Students will learn how to determine the loading of the forming tool or machine, and how to determine the critical values of deformation.

Successful completion of the course is conditional on the knowledge of applied mathematics and physics, materials science, elasticity, strength, and plasticity, and a grasp of metal-forming technologies.

The course is taught through lectures explaining the basic principles and theory of the discipline. Teaching is suplemented by practical laboratory work.

Conditions of awarding the course-unit credit: participation in exercises, working out 10 accepted reports concerning individual assignments, using recommended computer support. If this condition is not satisfied, the teacher may in justified cases assign alternative exercise programs. The examination is in public, testing the knowledge of three basic areas of the course, namely 1) the physical essence of plastic deformation and formability of metals and alloys, 2) mathematical theory of plasticity, 3) methods for solving metal-forming processes. Oral examination follows a preliminary written preparation answering the drawn complex question with 3 sub-questions concerning the basic areas of the course. The main emphasis is on understanding the method of solution and the ability to apply the known analytical and experimental calculation models.
The exam is public, it will have written preparation and oral part. It is classificated to the ECTS grading scale.

The main objective of the course is to provide students with the theoretical foundations and methodology necessary for solving metal-forming technologies on the principles of plastic deformation and theory of plasticity. Students will acquire knowledge necessary for a creative and complex engineering solution of the technologies of metal-forming processes.

Attendance in lectures is recommended.
Attendance in exercises is compulsory.
The attendance to the seminar is regularly checked and the participation in the lesson is recorded.
Absence from laboratory exercises is compensated for via make-up topics of exercises and consultations.

Programme M2I-P: Mechanical Engineering, Master's
branch M-STG: Manufacturing Technology, compulsory

Programme M2I-P: Mechanical Engineering, Master's
branch M-STM: Manufacturing Technology and Management in Industry, compulsory-optional

26 hours, optionally

prof. Ing. Milan Forejt, CSc.

1. Physical substance of plastic deformation. Formability of metals and alloys.
2. Resistance to deformation, effect of basic parameters. Deformation work and force.
3. Summary of the fundamentals of mathematical theory of plasticity. Partial theories.
4. Conditions of the appearance of plastic deformation. Analysis of the deformation process.
5. Analytical and analytical-experimental methods for solving metal-forming processes.
6. Upsetting between parallel planes, the Siebel and the Unksov solutions.
7. Forward extrusion, stress and strain analysis.
8. Backward extrusion, solution after Dipper, Sachs and Siebel.
9. Die forging, solution after Tomlen, Gubkin, Gelei and Storozhev
10. Bending of thin bars and wide bands.
11. Deep drawing, stress and strain, calculation after Sachs and Sofman.
12. Method of resistance to deformation. Theory of small elastic-plastic deformations.
13. State of stress in free and closed shear and in precise shearing.