| 描述1Cr18Ni9Ti不锈钢单轴棘轮行为的黏塑性本构模型 |
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| 引用本文： | 刘宇杰,蔡力勋,杨显杰,牛清勇.描述1Cr18Ni9Ti不锈钢单轴棘轮行为的黏塑性本构模型[J].航空学报,2005,26(1):58-61. |
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| 作者姓名： | 刘宇杰 蔡力勋 杨显杰 牛清勇 |
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| 作者单位： | 西南交通大学,应用力学与工程系,四川,成都,610031 |
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| 基金项目： | 核燃料与材料国防科技重点实验室开放基金(51481070101QT2201)资助项目 |
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| 摘 要： | 在室温下对1Cr18Ni9Ti不锈钢进行了单轴棘轮实验研究,提出了一种新的分离型黏塑性本构模型。引入了能记忆最大塑性应变的记忆面,在记忆面内和面上采用不同形式的塑性应变流动律和背应力演化律,将单调拉伸和循环行为分别独立描述。将模型应用于1Cr18Ni9Ti不锈钢单轴棘轮行为的描述中,模拟结果和实验结果吻合较好。
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| 关 键 词： | 不锈钢 棘轮 本构模型 黏塑性 随动硬化 |
| 文章编号： | 1000-6893(2005)01-0058-04 |
| 修稿时间： | 2003年12月19 |
Visco-Plastic Constitutive Model for Uniaxial Ratcheting Behavior of 1Cr18Ni9Ti Stainless Steel |
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| LIU Yu-jie,CAI Li-xun,YANG Xian-jie,NIU Qing-yong.Visco-Plastic Constitutive Model for Uniaxial Ratcheting Behavior of 1Cr18Ni9Ti Stainless Steel[J].Acta Aeronautica et Astronautica Sinica,2005,26(1):58-61. |
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| Authors: | LIU Yu-jie CAI Li-xun YANG Xian-jie NIU Qing-yong |
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| Institution: | Depatmant of Applied Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | The uniaxial ratcheting behavior of 1Cr18Ni9Ti stainless steel at room temperature is experimentally investigated. A new separate visco-plastic constitutive model is presented. A memory surface for maximum plastic strain is introduced and different plastic strain flow rules and evolution rules of back stress are applied according to the memory surface. The monotonic tensile behavior and cyclic behavior of the material are separately described independently. The model is applied to simulation for uniaxial ratcheting behavior of 1Cr18Ni9Ti stainless steel. It is shown that the simulative results agree well with the experimental ones. |
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| Keywords: | stainless steel ratcheting constitutive model visco-plasticity kinematic hardening |
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