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Orientador(es)
Resumo(s)
The reduction of pollution and fuel consumption is an important goal to the transportation industry. The weight reduction of vehicles has a strong effect on the reduction of greenhouse gas emissions and on the fuel consumption. Nowadays magnesium alloys tend to replace steels and aluminium alloys in order to go further in the structural weight reduction. Magnesium alloys are greatly appreciated due to their high strength-to-weight ratio, stiffness, and low density. However, magnesium alloys can exhibit complex types of cyclic plastic deformation, like twinning and de-twinning effect. Recent researches indicate that these type of plastic deformation cannot be fully characterized using the typical tools used in steels, thus it is required a new approach to fully capture their fatigue cyclic deformation and plasticity. This research aims to obtain a phenomenological cyclic elastic-plastic model that captures the cyclic deformation of magnesium alloys under multiaxial loading conditions. In order to validate the achieved model, the numeric estimates were correlated with the experimental data and with the estimates of the Jiang & Sehitoglu plasticity model. The results show that the developed model estimates are in agreement with the experimental data.
Descrição
Palavras-chave
AZ31B- F Magnesium alloy Plasticity Multiaxial loading paths Experimental tests
Contexto Educativo
Citação
ANES, Vítor; [et al] – Magnesium alloy elastoplastic behaviour under multiaxial loading conditions. In 18th International Conference on New Trends in Fatigue and Fracture – NT2F18. Lisbon, Portugal: 2018. Pp. 1-4