Esposito, Luca (2013) Topology Optimization Strategies in Multi-Physics Application. [Tesi di dottorato]
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| Tipologia del documento: | Tesi di dottorato |
|---|---|
| Lingua: | English |
| Titolo: | Topology Optimization Strategies in Multi-Physics Application |
| Autori: | Autore Email Esposito, Luca luca.esposito@unina.it |
| Data: | 31 Marzo 2013 |
| Numero di pagine: | 261 |
| Istituzione: | Università degli Studi di Napoli Federico II |
| Dipartimento: | Strutture per l'Ingegneria e l'Architettura |
| Scuola di dottorato: | Ingegneria civile |
| Dottorato: | Ingegneria delle costruzioni |
| Ciclo di dottorato: | 25 |
| Coordinatore del Corso di dottorato: | nome email Rosati, Luciano luciano.rosati@unina.it |
| Tutor: | nome email Fraldi, Massimiliano fraldi@unina.it |
| Data: | 31 Marzo 2013 |
| Numero di pagine: | 261 |
| Parole chiave: | topoly optimization, multi-physics, finite element |
| Settori scientifico-disciplinari del MIUR: | Area 08 - Ingegneria civile e Architettura > ICAR/08 - Scienza delle costruzioni |
| Aree tematiche (7° programma Quadro): | NANOSCIENZE, NANOTECNOLOGIE, MATERIALE E PRODUZIONE > Materiali |
| Depositato il: | 07 Apr 2013 19:19 |
| Ultima modifica: | 17 Giu 2014 06:05 |
| URI: | http://www.fedoa.unina.it/id/eprint/9470 |
Abstract
The scientific literature on research and applications in civil, chemical and mechanical engineering, as well as in material science has recently shown great interest in computational strategies aimed to optimize structures and materials at different levels of scale. Composites, polymers, fiber reinforced elements, porous media, micro-and nano-structured materials have been indeed widely used in many industry realms, covering applications in both traditional frameworks, say civil and mechanical engineering, and pioneer fields, such as aerospace, biomechanics and tissue engineering. The computational strategy named Topology Optimization has the purpose of maximizing a given mechanical characteristic, minimizing at the same time the weight of the component; in this way it is possible to contemporarily obtain structural performance required by specific applications for which the material is designed, and – via the reduction of the weight – to respond to the urgent demand for decreasing in the amount of raw material with the effect of reducing consumption and costs. Topology Optimization, by means of a innovative and original custom-made algorithm, has been applied in hip arthroplasty in order to minimize the probability of failure of prosthetic implants in the case of aseptic loosening. A second custom-made procedure able to acquire information about densities in biological structure as bones or levels of matrices fractions in microstructured materials by means of vector graphics files or DICOM (Digital Imaging and Communications in Medicine) files, have been developed with the aim of transforming automatically and in real time these information in stiffness and strength values to which one can associate mechanical contents and thus generate finite element-based models. Finally, by looking towards multi-physics applications and forcing a thermo-mechanical commercial code to perform poro-elastic analyses by exploiting a duality principle between the theories, the present work shows two examples of poro-elasticity problems of relevant interest in biomechanical applications: the modeling of the osteon, basis cellular unit of the bone, and drug infusion in solid tumor spheroids.
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