首页> 外文期刊>Fusion Engineering and Design >Ratcheting and fatigue behavior of Eurofer97 at high temperature, part 2: modeling
【24h】

Ratcheting and fatigue behavior of Eurofer97 at high temperature, part 2: modeling

机译:Eurofer97在高温下的棘轮和疲劳行为,第2部分:建模

获取原文
获取原文并翻译 | 示例
       

摘要

A constitutive model is proposed for Reduced-Activation Ferritic-Martensitic (RAFM) steel Eurofer97 at high temperatures by combining formulae from previous modeling approaches to describe and predict mechanical behaviors under various cyclic loading conditions. Two failure modes, fatigue fracture and over-accumulated strain (ratcheting) are able to be simulated by the combined constitutive model. Cyclic softening and the effect of magnitude, symmetry and rate of external loading on ratcheting behavior are also able to be described by the new model. Parameter values are fitted based on strain-controlled and stress-controlled isothermal uniaxial experiments on Eurofer97 batch two at 450 degrees C and 550 degrees C. The simulated results are presented to compare with corresponding experimental data, to show the performance of the new constitutive model.
机译:通过结合先前建模方法的公式来描述和预测各种循环载荷条件下的力学行为,提出了高温下还原活化铁素体-马氏体(RAFM)钢Eurofer97的本构模型。组合本构模型可以模拟两种破坏模式,即疲劳断裂和过度累积应变(棘轮)。新模型还可以描述循环软化以及幅度,对称性和外部负载率对棘轮行为的影响。基于Eurofer97批次2在450摄氏度和550摄氏度下的应变控制和应力控制等温单轴实验拟合参数值。模拟结果与相应的实验数据进行比较,以证明新的本构模型的性能。

著录项

  • 来源
    《Fusion Engineering and Design》 |2020年第3期|111426.1-111426.7|共7页
  • 作者

  • 作者单位

    Karlsruhe Inst Technol Inst Appl Mat Hermann von Helmholtz Pl 1 D-76344 Eggenstein Leopoldshafen Germany|Max Planck Inst Plasma Phys Boltzmannstr 2 D-85748 Garching Germany;

    Karlsruhe Inst Technol Inst Appl Mat Hermann von Helmholtz Pl 1 D-76344 Eggenstein Leopoldshafen Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Eurofer97; Constitutive model; 450 degrees C and 550 degrees C;

    机译:Eurofer97;本构模型;450摄氏度和550摄氏度;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号