| 一种基于材料延性耗散模型的疲劳损伤研究方法 |
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| 引用本文： | 程光旭,楼志文,匡震邦. 一种基于材料延性耗散模型的疲劳损伤研究方法[J]. 力学学报, 1993, 25(4): 496-499. DOI: 10.6052/0459-1879-1993-4-1995-671 |
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| 作者姓名： | 程光旭 楼志文 匡震邦 |
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| 作者单位： | 西安交通大学环境与化学工程学院，710049 |
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| 摘 要： | 本文从疲劳损伤导致材料延性下降这一事实出发,采用疲劳损伤延展性耗散模型,对低周疲劳定义了一种新的损伤变量,并进行了实验测量研究。结果表明,新损伤变量具有明确的物理意义,测定方法简单,能直接与材料机械性能相联系。
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| 关 键 词： | 疲劳 损伤力学 材料延性 耗散模型 |
A RESEARCH APPROACH BASED ON THE EXHAUSTION MODEL OF MATERIAL DUCTILITY FOR FATIGUE DAMAGE |
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| Cheng Guangxu,Lou Zhiwen and Kuang Zhenbang. A RESEARCH APPROACH BASED ON THE EXHAUSTION MODEL OF MATERIAL DUCTILITY FOR FATIGUE DAMAGE[J]. chinese journal of theoretical and applied mechanics, 1993, 25(4): 496-499. DOI: 10.6052/0459-1879-1993-4-1995-671 |
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| Authors: | Cheng Guangxu Lou Zhiwen Kuang Zhenbang |
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| Abstract: | Considering the fact that the material ductility may be decreased in cycle fatigue process, a new damage variable based on the exhaustion model of material ductility is defined for low-cycle fatigue , and measured experimentally. It is shown that this damage variable has a definite physical meaning and can be measured by a simple procedure. The relationship between the damage variable and mechanical property of material is establised. |
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| Keywords: | Low-cycle fatigue Damage mechanics Damage measurement Material ductility Research approach |
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