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中文摘要：
海洋工程焊接管节点受应力集中及复杂随机载荷的联合作用,容易发生疲劳破坏.为了提髙焊接管节点结构疲劳寿命预测的准确性,文章以管壁厚方向上的一点作为疲劳评估点,提出了一种新的管节点结构应力计算方法.通过与国际上公开发表的疲劳试验数据进行比较,证明了文中方法应用于管节点结构的可行性及考虑壁厚方向应力梯度的有效性.基于数值计算,文中还提出了可用于T 型管节点应力集中系数计算的参数公式,并对参数公式的精度进行了验证.
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