无缝气瓶热旋压收口成形工艺数值模拟研究

本文采用有限元分析软件ABAQUS对无缝气瓶热旋压收口成形工艺进行模拟研究,分析了不同工艺参数对气瓶热旋压成形的影响。模拟结果表明,无缝气瓶热旋压收口成形过程中,随着旋压温度的升高和进给比的增加,起旋点处最小壁厚减薄,瓶肩最大壁厚处壁厚增加;随着旋压温度的升高,最大等效应力不断减小,最大等效应变不断增加;随着进给比增加最大等效应力应变都略有增加;旋压力随着温度的升高和进给比的减小而降低。

Numerical Simulation Research on the Process of Hot Neck-spining Formation for the Seamless Cylinder

The process of hot neck-spining formation for the seamless cylinder is simulated by the FEM software ABAQUS to analyse the influences of different processing parameters on hot neck-spining of cylinder.The results show that during the process of hot neck-spining formation for the cylinder,(ⅰ)the minimum wall thickness at the start point of spining becomes thiner and the maximum wall thickness at cylinder shoulder becomes thicker with the spining temperature rising and feed ratio increasing;(ⅱ)the maximum equivalent stress decreases and the maximum equivalent strain increases with the spinning temperature rising;(ⅲ)the maximum equivalent stress and the maximum equivaclent strain increase slightly with the feed ratio increasing;(ⅳ)spining force decreases with temperature increasing and feed ratio decreasing.