基于蠕变的高温构件应力松弛损伤模型

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基金项目:

国家863高技术资助项目（2006AA04Z413）

Creep Based Stress Relaxation Damage Model for High Temperature Components

Key Laboratory of Safety Science of Pressurized System, Ministry of Education, East China University of Science and Technology, Shanghai, 200237, China

摘要: 基于Schlottner-Seeley平均蠕变断裂速率原理和松弛方程,构建了应力松弛损伤模型;采用该模型对高温紧固材料1Cr10NiMoW2VNbN进行了损伤预测和实验验证。结果表明,该模型预测的数据与实际试验结果吻合较好。
- 应力松弛损伤 /
- 寿命模型 /
- 高温紧固件 /
- 蠕变损伤 /
- 平均断裂速率
Abstract: Based on Schlottner-Seele average creep rupture rate theory and relaxation function, this paper constructs a relaxation damage model, with which to predict the relaxation damage life of high temperature bolting material 1Cr10NiMoW2VNbN. Validation results of relaxation tests indicate that the developed model has led to better consistent results with the experimental data.
- Stress relaxation damage /
- Life assessment model /
- High temperature bolting /
- Creep damage /
- Average rupture rate