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# Module Code - Title:

ME6192 - PLASTICITY OF CONVENTIONAL AND 3D PRINTED METALS

2021/2

3

0

0

1

6

6

N

# Rationale and Purpose of the Module:

This module introduces to students to the physical mechanisms, phenomena and modelling of the elastoplastic behaviour of conventionally and additively manufactured (3D printed) metals.

# Syllabus:

Physical mechanisms in plastic deformation: dislocations, slip systems Macroscopic elastoplastic behavior of metals: Phenomena under monotonic and cyclic loading Basic tensor algebra and continuum mechanics Mathematical theory of plasticity: Concept of yield surface, kinematic hardening, isotropic hardening, bounding surface plasticity Material symmetry: isotropy, anisotropy, anisotropic yield surfaces Plasticity modelling and implementation in FE analysis: Basic formulation, Abaqus models, UMAT Plasticity of 3D printed (additively manufactured) metals: additive manufacturing technologies and influence on microstructure, physical differences with conventional metals, anisotropy, mechanical properties under monotonic & cyclic loading, modelling considerations.

# Learning Outcomes:

## Cognitive (Knowledge, Understanding, Application, Analysis, Evaluation, Synthesis)

- Define the physical mechanisms in plastic deformation of metals; - Understand and evaluate the macroscopic elastoplastic phenomena exhibited by metals under different loading types; - Understand the basic tensor algebra and continuum mechanics formulation used in metal plasticity mathematical modelling; - Understand the mathematical theory of plasticity; - Understand material symmetry; - Apply mathematical modelling to represent the elastoplastic behaviour of metals under simple and complex loading conditions; - Evaluate different modelling approaches for representing elastic and inelastic anisotropy; - Apply FE analysis to simulate the elastoplastic behaviour of materials; - Understand the main differences between the elastoplastic behaviour of conventionally and additively manufactured (3D printed) metals; - Synthesise knowledge to create innovative solutions to problems relating to metal plasticity modelling and simulation.

## Affective (Attitudes and Values)

- Acknowledge the essential role of plasticity in the safe design of engineering structures and parts; - Appreciate the importance of accurate plasticity modelling and simulation. - Cooperate in a team environment, both as leader and member.

N/A

# How the Module will be Taught and what will be the Learning Experiences of the Students:

Normal lectures and in-class problem-based learning using case studies from engineering applications. Most of the cognitive learning outcomes will render the students knowledgeable and articulate in the key areas of metal plasticity, both for conventional and 3D printed metals.

# Prime Texts:

J. Lemaitre and J.L. Chaboche (1990) Mechanics of solid materials , Cambridge University Press

# Other Relevant Texts:

Neto, E. A. de Souza (Eduardo), PericÂ¿, Djordje,; Owen, D. R. J. (2008) Computational methods for plasticity theory and applications , Wiley
Lubliner, Jacob. (1990) Plasticity Theory , Macmillan

# Programme(s) in which this Module is Offered:

MSAEROTFA - AERONAUTICAL ENGINEERING
MSMEENTFA - Mechanical Engineering
MEAEENTFA - Aeronautical Engineering
MEMEENTFA - Mechanical Engineering