• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nuclear Engineering and Design >Release and redistribution of residual stress in the welded turbine rotor under service-type loadings
【24h】

Release and redistribution of residual stress in the welded turbine rotor under service-type loadings

机译：服役载荷下焊接涡轮转子中残余应力的释放和重新分布

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Welding residual stress relaxation and migration behavior in the welded turbine rotor was studied by using thermal elastic-plastic finite element method under the fatigue and creep loadings. The effect of solid-state phase transformation on the generation of residual stress during welding process was involved. Results reveal that the increase of welding pass number will reduce the peak of residual stress and the width of heat affected zone (HAZ). Under the repeated loadings, the welding residual stress is largely released after the first cycle of start-up and shut-down with a residence time. In addition, such a relaxation mainly depends on the temperature, the initial level of residual stress and the residence time of steady operation. Compared to the contribution of alternating load induced during the start-up and shut-down operation, the relaxation of residual stress is mainly ascribed to the creep mechanism. (c) 2015 Elsevier B.V. All rights reserved.
机译：采用热弹塑性有限元方法研究了在疲劳载荷和蠕变载荷作用下涡轮转子的焊接残余应力松弛和迁移行为。涉及固态相变对焊接过程中残余应力产生的影响。结果表明，增加焊接次数将减少残余应力的峰值和热影响区的宽度（HAZ）。在反复的载荷下，焊接的残余应力在启动和关闭的第一个循环后会停留一段时间，从而在很大程度上释放残余应力。另外，这种松弛主要取决于温度，残余应力的初始水平和稳定运行的停留时间。与在启动和关闭操作期间引起的交变载荷的贡献相比，残余应力的松弛主要归因于蠕变机制。 （c）2015 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Nuclear Engineering and Design》 |2015年第12期|500-510|共11页
  • 作者

    Feng Lei; Xuan Fu-zhen;

  • 作者单位

    E China Univ Sci & Technol, Sch Mech Engn, Shanghai 200237, Peoples R China;

    E China Univ Sci & Technol, Sch Mech Engn, Shanghai 200237, Peoples R China;

  • 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

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