Study of effect of damage accumulation on stress distribution parameters in mesovolume of biocomposite and its performance characteristics

Abstract—A numerical study of mechanical properties of zirconium ceramic–cortical bone tissue biocomposite has been fulfilled using a multiple-scale approach. Evolution of mesoscopic stress distribution in the components of biocomposite during its deformation has been studied with the assumption of damage accumulation until the macrostrength criterion is fulfilled. It has been shown that the parameters of the laws of distribution change with damage accumulation

Prediction of mechanical properties of ceramic biocomposite on the basis of numerical modeling

The numerical simulation of biocomposites consisting of zirconia-based ceramics and cortical bone was performed with the use of a multilevel approach. The mechanical properties of the ceramic biocomposite were determined. The evolution of mesoscopic stress distributions in the biocomposite components during the process of its deformation was investigated, taking into account damage accumulation up to the fulfillment of the macro strength criterion. It is shown that damage accumulation has an impact on the stress distribution laws at the mesoscopic level, which is manifested through the appearance of a threshold for the stress distribution, as well as through a significant decrease in the distribution amplitude

Prediction of mechanical properties of ceramic biocomposite on the basis of numerical modeling

The numerical simulation of biocomposites consisting of zirconia-based ceramics and cortical bone was performed with the use of a multilevel approach. The mechanical properties of the ceramic biocomposite were determined. The evolution of mesoscopic stress distributions in the biocomposite components during the process of its deformation was investigated, taking into account damage accumulation up to the fulfillment of the macro strength criterion. It is shown that damage accumulation has an impact on the stress distribution laws at the mesoscopic level, which is manifested through the appearance of a threshold for the stress distribution, as well as through a significant decrease in the distribution amplitude

Provenance and distribution networks of the earliest bronze in the Maritime Territory (Primorye), Russian Far East

Metal artifacts from the Paleometal Epoch (ca. 1100 BC–400 AD) of the Primorye (Russian Far East) have shed new light on the introduction of the earliest bronzes into the Pacific coastal areas of prehistoric Eurasia. However, little is known about raw material circulation and the role of metal in the context of inter-regional exchange. This paper investigates 12 copper artifacts from major Paleometal settlements using alloy composition, trace elements, and lead isotopes to explore the metal sources and distribution networks. The results suggest that most objects are made of a copper-tin alloy, but some have arsenic as a significant minor element . Geologically, copper is unlikely to have come from local ore sources, but rather from the Liaoxi corridor and Liaodong Peninsula in Northeast China. This may indicate an inland route of metal trade across Northeast China or alternately, a coastal route via the northern Korean Peninsula. Archaeologically, the combined study of artifact typology and chemistry indicates two possible origins for the metal: the Upper Xiajiadian culture in Northeast China and Slab Grave culture in Mongolia/Transbaikal. Remarkably, the connection with Upper Xiajiadian communities parallels the transport route along which millet agriculture spread from Northeast China to the Primorye during the Neolithic