Variační metody v termomechanice kontinua pevné fáze
| Autor: | Pelech, Petr |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Stress
Velké deformace Rychlostně nezávislé procesy Continuum mechanics and thermodynamics Peridynamics Large strain Shape Memory Alloys Poškození Anisotropic visco-elasto-plasticity Damage Tok Peridynamika Gradient polyconvexity Anizotropní visco-elasto-plasticita Gradientní polykonvexita GENERIC Flux Mechanika a termodynamika kontinua Materiály s tvarovou pamětí Rate-independent systems Napětí |
| Druh dokumentu: | Doctoral Thesis |
| Popis: | The thesis is devoted to study of continuum mechanics and thermodynamics and the related mathematical analysis. It consists of four self-contained chapters dealing with different aspects. The first chapter focuses on peridynamics, a non-local theory of continuum mechanics, and its relation to conventional local theory of Cauchy-Green elasticity. Similar compar- isons has been used for proving consistency and for determining some of the material coefficients in peridynamics, provided the material parameters in the local theory are known. In this chapter the formula for the non-local force-flux is computed in terms of the peridynamic interaction, relating the fundamental concepts of these two theories and establishing hence a new connection, not present in the previous works. The second and third chapters are both devoted to Rate-Independent Systems (RIS) and their applications to continuum mechanics. RIS represents a suitable approximation when the internal, viscous, and thermal effects can be neglected. RIS has been proven to be useful in modeling hysteresis, phase transitions in solids, elastoplasticity, damage, or fracture in both small and large strain regimes. In the second chapter the existence of solutions to an evolutionary rate-independ- ent model of Shape Memory Alloys (SMAs) is proven. The model... |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|