Metal Forming Technology
Objectives
By the end of the Curricular Unit the students will be able to:
-Apply the plasticity theory to manufacturing processes;
-Apply the methods of analysis;
-Select the manufacturing processes;
-Optimize the process parameters;
-Predict and avoid of defects;
-Propose technological innovations for energy efficiency, lower environmental impact and new products production.
General characterization
Code
10503
Credits
6.0
Responsible teacher
Telmo Jorge Gomes dos Santos
Hours
Weekly - 4
Total - 77
Teaching language
Português
Prerequisites
-Technical Drawing
- Technologies and Mechanical Processes
- Mechanical Technology I
- Mechanical Technology II
Bibliography
Main bibliography:
Tecnologia Mecânica: Tecnologia da Deformação Plástica, Vol. II and Vol. II, J. Rodrigues, Paulo Martins, Escolar Editora, 2010.
Complementary bibliography:
Fundamentals of Modern manufacturing - Materials Processes and Systems, Mikell P. Groover, John Wiley & Sons, 1999.
Manufacturing Engineering and Technology, Serope Kalpakjian, Steven R. Schmid, Prentice Hall, 2006.
Manufacturing Processes for Engineering Materials, Serope Kalpakjian, Steven R. Schmid, Prentice Hall, 2008.
Introduction to Manufacturing Processes, John A. Schey, MCGRAW-HILL, 2000.
Teaching method
Lectures:
Exposition of the fundamental concepts.
Practical classes:
Analysis of case studies, problem-solving by the students, and working with lab equipment.
Evaluation method
Evaluation:
Continuous evaluation:
1 Individual Work (30%) + 2 tests (35% + 35%)
(Condition: grade of Individual Work > 10.0 values)
Exam:
Final exam without access condition.
Subject matter
Part 1–Theoretical aspects
1.1) Elasticity
Tensor stress, principal stresses/directions, invariants, Deviator tensor, Normal, shear and octahedral stresses, Mohr''s plane, Hooke’s law
1.2) Plasticity
Stress-strain curve, Effective stress, Elastic energy of distortion, Yield criteria and Haigh–Westergaard stress space, Plastic work concept, Constitutive equations (Levy-Mises), Plastic flow law, plastic potential concept
1.3) Phenomenological aspects of plasticity
Mechanical testing, material properties, Anisotropy, Strain hardening, Bauschinger effect, Empirical stress-strain relations, Temperature and strain rate
1.4) Methods of analysis: Uniform energy method, Slab method, Upper bound method
Part 2-Manufacturing processes
2.1) Bulk and Sheet metal forming
Forging, Rolling, Extrusion, Drawing and tube drawing, Bending, Roll bending, Roll forming, Deep Drawing, Stretch-forming process, Spinning
2.2) Other manuf. proc.