Computational Analysis of the Compaction Fabrication Process of Composite Unidirectional Cellular Metals
Abstract
Cellular structures have attracted wide attention as structural materials that are light and strong. Consequently, numerous previous cellular structures have been fabricated using a single metal as the base material owing to the complexity of the fabrication method; however, studies on the fabrication of multimaterial cellular structures are rather limited. In this study, we computationally analyse the fabrication process of two types of copper/stainless-steel composite unidirectional porous (UniPore) structures with a stainless-steel cover layer on the entire inner surface of the copper pipe to identify the conditions of the experimentally fabricated UniPore structures using the explosive compression method. Our results regarding the collision velocity of the metals during compression and the temperature at the time of collision indicate that wider gaps are required between the metals to increase the collision velocity between the metals and that pipe hardness decreases during collisions due to temperatures reaching the metal's melting point.
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