Computational Methods in Plasticity and Fracture Mechanics

Code:

PRODEM021

Acronym:

MCPMF

Keywords
Classification	Keyword
OFICIAL	Mechanical Engineering

Instance: 2021/2022 - 1S

Active?	Yes
Responsible unit:	Applied Mechanics Section
Course/CS Responsible:	Doctoral Program in Mechanical Engineering

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
PRODEM	4	Syllabus since 2009/10	1	-	6	28	162

Teaching language

Suitable for English-speaking students

Objectives

Computational Methods in Plasticity: it is intended that the student addresses the theory of plasticity (in the broad sense), using a computational perspective based on an approximation made based on the finite element method (FEM).

     The objective of the second part of the cpurse, Computational Methods in Damage Mechanics, is to train students in recent techniques of numerical simulation of the process of structural degradation of metallic and composite materials. This course will complement the disciplines of fracture mechanics and Approximation Methods in Engineering.

Learning outcomes and competences

Ability to simulate the plastic deformation and rupture of structures and mechanical components using the Computational Mechanics.

Working method

Presencial

Program

Computational Methods for Plasticity



Elasto-plastic constitutive model: strategies for incremental-iterative solution; consistent linearization of the integration algorithm. Formulation elasto-viscoplastic and rigid-viscoplastic. The problem of incompressibility in solving problems by MEF. Alternative formulations to mitigate the effect of retention: selective integration, method, method of deformations added.



         Computational Methods in Damage Mechanics



     Introduction. Numerical determination of stress intensity factors. Method of extrapolation to r = 0 and collapsed elements. Method of weight functions. Energy methods. Virtual Crack Closure Technique. Algorithms for calculating the integrals J and. Application of Boundary Element Method to problems of fracture. Damage mechanics. Location and nonlocal models. Simulation of damage in composite materials. Methods of stress and strain off média.Noção slit equivalent. Micromechanical models. Continuum damage models for simulation of fracture in composite materials.

Mandatory literature

D. R. J. Owen, E. Hinton; Finite elements in plasticity. ISBN: 0-906674-05-2
P. I. Kattan, G. Z. Voyiadjis; Damage mechanics with finite elements. ISBN: 3-540-42279-X

Teaching methods and learning activities

Tutorial lecturing.

Software

ABAQUS

Evaluation Type

Distributed evaluation without final exam

Assessment Components

Designation	Weight (%)
Trabalho escrito	100,00
Total:	100,00

Amount of time allocated to each course unit

Designation	Time (hours)
Elaboração de relatório/dissertação/tese	30,00
Total:	30,00

Calculation formula of final grade

Assignments on plasticity (50% weight) and on fracture (50% weight).