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检索条件:关键词=non-proportional loading  

  • 论文(3)

非比例加载下冷变形Zr-4合金的宏观应力响应及其位错亚结构

王航 , 丁向东 , 肖林

金属学报

研究了相位角30o 、 60o 、90o和等效应变幅0.8%、0.6%、0.4%时双轴非比例加载下, 冷变形去应力状态Zr-4合金宏观响应和微观位错亚结构。结果表明: 应力矢量和应变增量矢量之间的滞迟角 在循环变形初期表现为较大的变化幅度,随着塑性变形的进行,变化幅度逐渐减小,并趋于稳定。滞迟角的变...

关键词: Zr-4合金 , proportional loading , non-proportional loading , additional hardening , dislocation

FATIGUE CRACK PROPAGATION FOR BIAXIAL STRESS CYCLING

PEI Hongxun Institute of Corrosion and Protection of Metals , Academia Sinica , Shenyang , China Institute of Corrosion and Protection of Metals , Academia Sinica , Shenyang , China

金属学报(英文版)

Based on the experimental study of complex biaxial mode Ⅰ fatigue crack growth and the discussion on Von Mises'theory,a new approach is proposed for correlating crack propaga- tion rate under both in-phase and out-of-phase biaxial stress cycling.The results emphasize the contribution of plasticity t...

关键词: biaxial stress , null , null , null

SIMULATION OF COMPLEX THERMOMECHANICAL FATIGUE

R.Bardenheier , G.Rogers

金属学报(英文版)

Two different types of experimental techniques to perform non-isothermal, uniaxial and biaxial fatigue tests were described. A new miniaturised electrothermalmechanical test rig was presented and discussed. It enables testing of small specimens under complex thermomechanical loading conditions. In o...

关键词: thermomechanical fatigue , null , null