| 紧凑拉伸试件的J积分函数解析表达式 |
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| 引用本文： | 方华灿,段梦兰.紧凑拉伸试件的J积分函数解析表达式[J].中国石油大学学报(自然科学版),1992(6). |
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| 作者姓名： | 方华灿 段梦兰 |
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| 作者单位： | 石油大学机械系
(方华灿)，石油大学机械系(段梦兰) |
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| 摘 要： | 对疲劳和断裂分析中的紧凑拉伸试件进行了弹塑性分析,分别建立起弹性状态和弹塑性状态(或塑性状态)下的J积分函数解析表达式,并用所建立的J积分函数估算了渤海石油平台用钢A537在常温下的疲劳裂纹扩展寿命.数值计算的结果和试验结果是吻合的.这说明所建立的J积分函数解析式不仅有效可靠,且足以用来解决疲劳寿命的估算问题.
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| 关 键 词： | 试件 拉伸试验 疲劳裂纹 疲劳寿命 (J积分函数) |
ANALYTIC EXPRESSIONS OF J-INTEGRAL FUNCTIONS OF A COMPACT TENSION SPECIMEN FOR FRACTURE AND FATIGUE ANALYSIS |
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| Fang Huacan Duan Menglan.ANALYTIC EXPRESSIONS OF J-INTEGRAL FUNCTIONS OF A COMPACT TENSION SPECIMEN FOR FRACTURE AND FATIGUE ANALYSIS[J].Journal of China University of Petroleum,1992(6). |
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| Authors: | Fang Huacan Duan Menglan |
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| Institution: | Dept. Mechanical Engineering |
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| Abstract: | Analytic formulas of elastic, plastic and elastic-plastic J-integral functions of a compact tension specimen are establisted by using elastic-plastic mechanics and fracture mechanics. These formulas are used to calculate the crack propagation life of steel A537. The results are in agreement with the experiment values, which testifies the validity and the reliability of the established formulas of this paper. |
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| Keywords: | Specimen: Tension tests: J-integral function: Fatigue crack: Fatigue life |
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