Thermo-Mechanical Finite Element Simulation and Fatigue Life Assessment of a Copper Mould for Continuous Casting of Steel

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• 作者：Jelena Srnec Novak^a ; ^{jelena.srnec@uniud.it" class="auth_mail" title="E-mail the corresponding author} ; Denis Benasciutti^a ; Francesco De Bona^a ; Aleksandar Stanojević^b ; Patrik Huter^b
• 关键词：copper mould ; thermo-mechanical analysis ; cyclic plasticity ; material models ; fatigue assessment
• 刊名：Procedia Engineering
• 出版年：2015
• 出版时间：2015
• 年：2015
• 卷：133
• 期：Complete
• 页码：688-697
• 全文大小：528 K

文摘

This work describes the thermo-mechanical analysis of a copper mould for continuous steel casting. During the process, the molten steel passes through a water cooled mould. The inner part of the component is subjected to a huge thermal flux. Consequently large temperature gradients occur across the component, especially in the region near to the meniscus, and cause elastic and plastic strains. The aim of this work is to set up an industrially oriented approach to assess the fatigue life of the copper mould. To achieve the goal, a three-dimensional finite element model is analyzed in dependence of four different material models (linear kinematic hardening, combined, stabilized and accelerated material model). The main question is which material model is more suitable to be used. Material coefficients for all applied material and fatigue life models are estimated from experimental, isothermal low cycle fatigue data. The fatigue life is also assessed depending on different material models. The results obtained with the FEM analysis are examined and compared.