管件弯曲工艺参数对截面质量影响有限元模拟

Finite Element Simulation on Section Surface Quality Due to Pipe-Bending Technique Parameters

大口径船用管件多采用冷弯成形工艺,为掌握管件弯曲工艺参数对截面质量的影响规律,采用ABAQUS对管件弯曲过程进行模拟。模拟结果显示:随着芯棒与管件单侧间隙的增加,壁厚减薄率相应减小,单侧间隙合适范围为0.5mm^1mm;随着芯棒伸出量增加,弯管截面圆度值增大,芯棒伸出量合适范围为25mm^30mm。

Large diameter marine pipe is made of cold bending process.In order to comprehend the law of bending process parameters with the section quality of pipe,this paper performed a simulation on the bending process of pipes via ABAQUS.The simulation result shows that the thickness reduction ratio of the pipe would be reduced in the case of the increasement of the interstice between the mandrel and side of the pipe.The appropriate interstice is 0.5 mm^1 mm.Additionally,with the extension length of the mandrel increasing,the roundness of the cross section of the distorted pipe increases,and the appropriate extension length of mandrel is 25 mm^30 mm.