| Popis: |
Preučena so osnovna ravnovesna stanja dveh struktur, elastičnih plaščev prisekanih antistožcev in elastičnih Jordanovih krivulj na sferi, v odvisnosti od kotnega presežka plaščev oziroma dolžine krivulj. Pri preučitvi plaščev so bili opravljeni eksperimenti, medtem ko smo za preučitev Jordanovih krivulj opravili numerične simulacije. Slednje smo na koncu primerjali z eksperimenti. Opazili smo ujemanje med eksperimenti in simulacijami v primeru prostih robnih pogojev. Na začetku imajo rešitve dvojno simetrijo, preko določene vrednosti kotnega presežka/dolžine pa obe vrsti struktur raje zavzameta konfiguracijo s poševno simetrijo. We examine the basic equilibrium states of two types structures, elastic lateral surfaces of truncated anticones and elastic Jordan curves on a sphere, depending on the angular excess of the lateral surfaces and the length of the curves, respectively. Experiments were performed to study the lateral surfaces, while numerical simulations were performed to study the Jordan curves. The latter were finally compared with experiments. We observed a good agreement between experiments and simulations in the case of free boundary conditions. Initially, the solutions have two-fold symmetry, but beyond a certain angular excess/length value, both types of structures prefer to occupy a configuration with skew symmetry. |
