Papers by Keyword: Compression Behaviour

Abstract: The design flexibility of Additive manufacturing (AM) processes combined with optimal structure selection has greatly expanded the research for lattice like structures. The development of elastic materials such as Thermoplastic polyurethane (TPU) was enhanced by the existence of compatible additive technologies, which resulted in the interest in the inclusion of this material in all types of product and industrial applications. Several studies established the critical role in the influence on the performance of elastic structures powered by changes in geometrical and manufacturing parameters. These findings enhanced the possibility of designing lattice like structures with different performances in order to be implemented in several applications with specific elastic needs. Therefore, the objective of this work focused on the characterization of closed-wall lattice structures through the analysis of the performance as a function of the design parameters and material used. In this way, several lattice structures were manufactured and tested. The results showed a correlation between the geometric variables and specimen’s stiffness. A substantial variation of the stiffness as a function of the thickness of the unit cell and the height of the layer was found. Same stiffness values can be achieved using different materials and geometric parameters. Similar stiffness values using recycled materials obtained favorable results.

Abstract: The current study investigates the effects of mixing parameters on the quality of anode paste and green anode used in aluminum electrolysis. Four mixing times and four mixing temperatures were applied to prepare anode pastes using calcined petroleum coke and coal tar pitch, as raw materials. The volume of the pores in the paste was used as the indicator for mixing effectiveness. A compression test was applied to the pastes to study the compactability of these pastes and to investigate the effect of mixing parameters on density of the green samples. It was shown that mixing parameters influence the size, volume and surface area of paste porosity and also its compaction behaviour.

Abstract: Compression behavior of a novel type of SiC/Al co-continuous composites was investigated using the finite element method and a new constitutive model were presented in this paper. The results show that the new constitutive model of the co-continuous composites can predicate the compression behavior of the composites accurately according to the simulative data. The fitting curve of the compression behavior achieved from the constitutive formula accords with the simulation results, which improves the reliability of the simulation on composites.