| 含类焊接裂纹十字接头的疲劳特性 |
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| 引用本文： | 轩福贞,汤红卫,李培宁.含类焊接裂纹十字接头的疲劳特性[J].上海力学,2001,22(2):216-220. |
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| 作者姓名： | 轩福贞 汤红卫 李培宁 |
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| 作者单位： | 轩福贞（华东理工大学上海 200237）
汤红卫（山东工业大学济南 250061）
李培宁（华东理工大学上海 200237） |
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| 基金项目： | 山东省自然科学基金资助课题 |
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| 摘 要： | 为探讨含类焊接裂纹结构的疲劳性能,设计了部分熔透焊接接头的拉一拉疲劳试验,并进行了有限元分析,研究了不同裂纹尺寸下接头的疲劳强度、应力集中系数、应力强度因子范围和疲劳寿命的变化规律.结果表明,当未熔透尺寸2a/T＜0.5时,疲劳性能无明显减弱;而当未熔透尺寸2a/T＞0.5时,则接头的抗疲劳性能显著降低.
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| 关 键 词： | 焊接接头 疲劳强度 寿命预测 |
| 修稿时间： | 2000年3月13日 |
A Study on Fatigue Behavior of Cruciform Welded Joints Containing Welding Crack-like Defects |
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| XUAN Fu-zhen,TANG Hong-wei,LI Pei-ning.A Study on Fatigue Behavior of Cruciform Welded Joints Containing Welding Crack-like Defects[J].Chinese Quarterly Mechanics,2001,22(2):216-220. |
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| Authors: | XUAN Fu-zhen TANG Hong-wei LI Pei-ning |
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| Abstract: | In order to probe the fatigue behavior of structure containing welding defects, the tensile-tensile fatigue test was designed, and the finite element analysis was conducted. The varying rules of fatigue strength, the stress concentration factor, the stress intensity factor range and the fatigue life along with various crack size were studied. The result indicates that the fatigue behavior of joint may not be weaken when the incomplete penetration size is 2a/T<0-5, but be weaken obviously while 2a/T>0.5. |
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| Keywords: | welded joints fatigue strength life prediction |
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