Computational Methods in Plasticity and Fracture Mechanics
| Keywords |
| Classification |
Keyword |
| OFICIAL |
Mechanical Engineering |
Instance: 2023/2024 - 2S 
Cycles of Study/Courses
| Acronym |
No. of Students |
Study Plan |
Curricular Years |
Credits UCN |
Credits ECTS |
Contact hours |
Total Time |
| PRODEM |
8 |
Syllabus since 2009/10 |
1 |
- |
6 |
28 |
162 |
Teaching Staff - Responsibilities
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).