Naslov
Analysis of amphorae resistance to ruptures and cracks

Autori
Sviličić, Šimun ; Rudan, Smiljko ; Radić Rossi, Irena

Izvornik
Archaeologia Maritima Mediterranea (1724-6091) 19 (2022); 141-166

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
amphorae, cracks, nonlinear finite element modelling, Johnson-Holmquist damage, explicit analysis

Sažetak
Even though the origin of amphorae and their history are widely studied, reasons for their evolution are not completely understood. It is safe to assume that the evolution of amphorae depended on the engineers of the past, and the constant need for improvement of their efficiency. Amphorae were made of wheel turned clay, extremely brittle material with low ultimate strength. The amphorae production was not controlled, i.e., the produced items were never identical. They were prone of damage and fluid spill during transport. The presented research is one of the initial steps in studying their evolution, based on structural integrity. In order to accurately analyse it, the material model and its behaviour should be known. Problem arises from the fact that clay is usually not used as the structural material, so there is the lack of material data and testing. By using reverse engineering, virtual 3D models of amphorae were produced, and subjected to the drop test. Inside of the material model, damage is implemented by using already developed Johnson- Holmquist damage numerical model. Parameters for Johnson-Holmquist damage numerical model are varied based on the conclusion that the raw material (clay), and the inability of controlling the amphorae production, varied a lot. Experimental drop tests were carried in order to develop further understanding on how the material behaves under the dynamical loading. Comparison between the experimental and numerical results, obtained by the complex nonlinear finite element analysis, are presented and discussed.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja, Arheologija

POVEZANOST RADA