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考虑疲劳性能的十字接头角焊缝尺寸设计

聂春戈,孙振轩,孙彦彬,马思群

聂春戈,孙振轩,孙彦彬,马思群. 考虑疲劳性能的十字接头角焊缝尺寸设计[J]. 焊接学报, 2017, 38(11): 16-20,76. DOI: 10.12073/j.hjxb.20170227003
引用本文: 聂春戈,孙振轩,孙彦彬,马思群. 考虑疲劳性能的十字接头角焊缝尺寸设计[J]. 焊接学报, 2017, 38(11): 16-20,76. DOI: 10.12073/j.hjxb.20170227003

考虑疲劳性能的十字接头角焊缝尺寸设计

  • 摘要: 传统的角焊缝尺寸设计往往只考虑焊缝的静力强度,文中则从疲劳性能的角度对十字接头角焊缝的尺寸设计问题进行研究. 首先计算了无熔深十字接头可能失效截面的结构应力,通过对不同焊脚尺寸时结构应力变化特点的分析,从理论上证明了焊脚尺寸越大,接头的疲劳性能越高;当焊脚尺寸s和板厚h之比小于0.75时为焊根失效,大于0.75时为焊趾失效;而实际工程中s/h在0.8和1.0之间是比较理想的选择. 然后通过一系列疲劳试验验证了上述结论. 最后还分析了焊接熔深对十字接头疲劳性能和焊脚尺寸设计的影响.
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  • 收稿日期:  2017-02-26

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