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拘束度作为接头刚发的度量参数有重要的实用价值与理论意义,目前有关刚性对接接头拘束度与拘束应力关系的研究仅限于弹性应力应变范围。本文重点研究了焊缝金属屈服对焊接拘束应力的影响,提出了刚性对按接头焊接拘束应力的计算公式,公式中考虑了焊缝金属屈服的影响,采用PRRC试验方法验证了公式的计算精度。
Stiffness as a metric just emerging parameters have important practical significance and theoretical significance, the current research on the relationship between stiffness and buttress stiffness of butt joints limited to the elastic stress and strain range. This paper focuses on the influence of weld metal yielding on the restraining stress of welding, and puts forward the formula of the restraining stress of the welding on the rigid joint. The formula considers the influence of weld metal yield. The PRRC test method is used to verify the calculation accuracy of the formula.