螺旋縫焊管殘余應(yīng)力的測量與計(jì)算

Measurement and Calculation of Residual Stress of SAWH Pipe

摘要: 對螺旋縫焊管的殘余應(yīng)力進(jìn)行理論分析，推導(dǎo)出殘余應(yīng)力分量環(huán)向應(yīng)力、剪切應(yīng)力與軸向張口長度和錯(cuò)位長度的函數(shù)關(guān)系，將應(yīng)力分量合成為總應(yīng)力計(jì)算公式；并運(yùn)用推導(dǎo)公式計(jì)算L485鋼級囟1 016 mm伊17.5mm螺旋縫焊管的殘余應(yīng)力。分析表明：隨著張口長度、錯(cuò)位長度的增大，螺旋縫焊管的殘余應(yīng)力增大；推導(dǎo)出的殘余應(yīng)力計(jì)算公式具有簡單、易計(jì)算的特點(diǎn)。

Abstract: Theoretically analyzed is the residual stress of the SAWH pipe， and accordingly derived is the functional relationship between the residual components ，i.e.，the circumferential stress & the shearing stress，and the axial opening length & the displacement length. Then，the said stress components are combined to get the general stress calculation formula with which the residual stress of the 囟1 016 mm伊17.5 mm L485 SAWH pipe is computed out. The analysis result shows that along with increase of both the opening length and the displacement length，the SAWH pipe’ s residual stress is going up. This residual stress calculation formula features simplicity and easy use.