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首页> 外文期刊>International Journal of Damage Mechanics >Damage-coupled ratcheting behaviors of SA508 Gr.3 steel at room and elevated temperatures: Experiments and simulations
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Damage-coupled ratcheting behaviors of SA508 Gr.3 steel at room and elevated temperatures: Experiments and simulations

机译：SA508级钢的损伤耦合棘轮行为在室内和高温下升温：实验和模拟

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摘要

A series of experiments subjected to uniaxial and non-proportionally multiaxial cyclic loadings were performed to investigate the ratcheting responses of SA508 Gr.3 steel at room and elevated temperatures. The influences of different stress levels and nonproportional loading paths on the damage-coupled ratcheting responses were discussed. From experimental results, cyclic softening characteristic and dynamic strain aging can be observed under cyclic loadings. Moreover, the steel exhibits an obvious nonproportional path-dependence of the damage evolution under multiaxial loading paths. To numerically simulate the ratcheting responses under uniaxial and multiaxial loadings with the extended cyclic plastic model, the damage-coupled variable was introduced into the classic isotropic and nonlinear kinematic hardening rules. Corresponding material parameters could be calibrated from experimental data, and comparisons between experimental and simulated results were performed to validate the proposed model.
机译：进行了一系列受单轴和非成比例的多轴环状载体的实验，以研究SA508 GR.3钢在房间和升高的温度下的棘轮响应。讨论了不同应力水平和非备产负载路径对损伤耦合的棘轮响应的影响。根据实验结果，可以在循环载荷下观察循环软化特性和动态应变老化。此外，钢在多轴加载路径下表现出明显的非储差依赖性损伤进化。为了用延长的循环塑料模型进行数字地模拟单轴和多轴载荷下的棘轮响应，将损伤耦合变量引入经典的各向同性和非线性运动硬化规则。可以从实验数据校准相应的材料参数，并进行实验和模拟结果之间的比较来验证所提出的模型。

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  • 来源
  • 作者

    Tian Jun; Fu Xiaolong; Shao Xuejiao; Jiang Lu; Li Jian; Kan Qianhua;

  • 作者单位

    Nucl Power Inst China Sci &

    Technol Reactor Syst Design Technol Lab Chengdu Sichuan Peoples R China;

    Nucl Power Inst China Sci &

    Technol Reactor Syst Design Technol Lab Chengdu Sichuan Peoples R China;

    Nucl Power Inst China Sci &

    Technol Reactor Syst Design Technol Lab Chengdu Sichuan Peoples R China;

    Nucl Power Inst China Sci &

    Technol Reactor Syst Design Technol Lab Chengdu Sichuan Peoples R China;

    Southwest Jiaotong Univ Sch Mech &

    Engn Appl Mech &

    Struct Safety Key Lab Sichuan Prov Chengdu Peoples R China;

    Southwest Jiaotong Univ Sch Mech &

    Engn Appl Mech &

    Struct Safety Key Lab Sichuan Prov Chengdu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料一般性问题;
  • 关键词

    SA508 Gr; 3 steel; ratcheting; constitutive model; damage; elevated temperature;

    机译：SA508等级;3钢;棘轮;本构模型;损伤;升高的温度;

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