Tecnologia em Metalurgia, Materiais e Mineração
https://tecnologiammm.com.br/article/doi/10.4322/2176-1523.20222628
Tecnologia em Metalurgia, Materiais e Mineração
Artigo Original – Special issue Tribute to Dr. Wilson Luiz Guesser

Gear fatigue of austempered ductile iron (ADI): an overview of numerical studies at UTFPR

Roberto Luís de Assumpção, Marco Antônio Luersen, Carlos Henrique da Silva

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Abstract

ADIs are very versatile materials and can provide high performance in situations involving fatigue and wear. To understand the effect of graphite nodules on fatigue strength of ADIs, an interesting way of studying are the numerical analyzes through the Finite Element Method (FEM). UTFPR in partnership with TUPY S.A., especially under the supervision of Prof. Dr. Wilson L. Guesser, has carried out several studies via FEM in order to generate enough interesting knowledge, both for the foundry company and for the end user of ADI. From the results of these studies, it was found that, in general, although smaller graphite nodules have a slight tendency to nucleate cracks more quickly, their characteristics of relieving stresses and generating a branched mesh of interconnected cracks, which absorb energy at the crack tips, makes ADI with small nodules becomes a very competitive material in gear manufacturing

Keywords

Austempered ductil iron (ADI); Finite element method (FEM); Fatigue; Gear

Referências

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Submetido em:
20/08/2021

Aceito em:
15/01/2022

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