螺旋盘管滚弯成形的数值模拟

Numerical simulation of spiral tube forming processing

针对螺旋盘管滚弯成形过程研究相对落后的问题,利用ANSYS/LS-DYNA分析软件,采用三维刚塑性有限元法对螺旋盘管的滚弯成形进行数值模拟,得到螺旋盘管滚弯成形时断面壁厚和成形速度的变化规律.研究结果表明,在弯曲内侧的等效应变值略大于弯曲外侧的等效应变值;壁厚变化量随断面角度的变化不是单纯的正弦(或余弦)规律.

Aimed at the comparative backwardness of investigation of rolling-bending forming process of spiral tube,numerical simulation of the formation process was performed by using analysis software ANSYS/LS-DYNA and three-dimensional rigid-plastic finite element method,and the variation pattern of tube thickness with the forming velocity was obtained.It pointed out by this investigation that the equivalent strain value at the inner side of the pending was greater slightly than that at outer side,and the variation of tube wall-thickness with cross-section angle did not follow the sinusoidal pattern.