| 局部法在十字接头工作角焊缝疲劳强度评定中的应用 |
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| 引用本文： | 陈俊梅,霍立兴,张玉凤,王东坡. 局部法在十字接头工作角焊缝疲劳强度评定中的应用[J]. 机械强度, 2001, 23(3): 353-355 |
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| 作者姓名： | 陈俊梅 霍立兴 张玉凤 王东坡 |
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| 作者单位： | 天津大学 材料科学与工程学院, |
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| 基金项目： | 国家博士点基金资助项目 (1 9990 0 560 5)~~ |
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| 摘 要： | 介绍了一种新的疲劳强度评定方法，即局部法，该方法用单一疲劳标准可预测结构在载荷作用下的疲劳行为，而不受结构几何形状复杂，所受外载复杂的拘束，对国内常用Q235B钢的十字接头工作角焊缝进行了单轴拉伸疲劳试验，并用有限元方法对焊接残余应力和外载引起的局部应力进行了计算，分析结果表明该准则完全适合于Q235B钢。
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| 关 键 词： | 局部法 十字接头 残余应力 疲劳评定 焊缝 焊接接头 |
| 修稿时间： | 2000-03-16 |
FATIGUE STRENGTH STUDY ON LOAD CARRYING FILLET WELDED CRUCIFORM JOINTS--APPLICATION OF THE LOCAL APPROACH |
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| CHEN Junmei HUO Lixing ZHANG Yufeng WANG Dongpo. FATIGUE STRENGTH STUDY ON LOAD CARRYING FILLET WELDED CRUCIFORM JOINTS--APPLICATION OF THE LOCAL APPROACH[J]. Journal of Mechanical Strength, 2001, 23(3): 353-355 |
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| Authors: | CHEN Junmei HUO Lixing ZHANG Yufeng WANG Dongpo |
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| Abstract: | A new method named the local approach is introduced. The interest in the local approach is that it can predict the fatigue behavior of mechanical parts from a single endurance criterion, irrespective of their geometrical complexity and of the conditions of the global external loading (uniaxial or multiaxial). In this work uniaxial tensile fatigue tests were carried out for Q235B cruciform joints and welding residual stresses and local stress status were calculated by finite element method. Results show that the local approach is applicable to Q235B steel. |
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| Keywords: | Local approach Cruciform joints Residual stresses Fatigue evaluation |
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