...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >A generalized hysteresis energy method for fatigue and creep-fatigue life prediction of 316L(N)
【24h】

A generalized hysteresis energy method for fatigue and creep-fatigue life prediction of 316L(N)

机译：316L（N）疲劳和蠕变疲劳寿命预测的广义磁滞能量方法

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

Creep-fatigue interaction is extremely important for the life prediction of structural components subjected to high temperature conditions. The widely used life prediction methods such as time fraction rule and ductility exhaustion method are found to be insufficient in long time regimes and cannot give a clear physical explanation for the material failure. In this paper, a generalized life prediction model is proposed on the basis of the hysteresis energy and law of energy conservation. The influence of hold time on the cyclic stress-strain behavior is described based on isochronous stress-strain curves and stress relaxation during hold time is evaluated with the time hardening rule. An analytical approach is set up to calculate the hysteresis energy for the creep-fatigue tests. The generalized hysteresis energy is used as a model parameter to predict the fatigue and creep-fatigue life of 316L(N) and it is found to have a power law relationship with the number of cycles to failure. The fatigue and creep-fatigue life predicted with the new energy-based method shows a good correlation with the experimental results from different researchers.
机译：蠕变疲劳相互作用对于预测高温条件下结构部件的寿命非常重要。人们发现，时间分数法和延展性疲劳法等广泛使用的寿命预测方法在很长的时间范围内是不够的，并且不能为材料破坏提供清晰的物理解释。本文基于磁滞能量和节能规律，提出了一种广义寿命预测模型。基于等时应力-应变曲线描述了保持时间对循环应力-应变行为的影响，并使用时间硬化规则评估了保持时间中的应力松弛。建立了一种分析方法来计算蠕变疲劳测试的磁滞能量。广义磁滞能量用作模型参数，以预测316L（N）的疲劳和蠕变疲劳寿命，并且发现它与失效循环次数具有幂律关系。新的基于能量的方法预测的疲劳寿命和蠕变疲劳寿命与不同研究人员的实验结果显示出良好的相关性。

著录项

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