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假设管道材料为无限弹性体,采用ANSYS有限元分析软件,对95°~135°范围内不规则Z形直埋供热弯管进行数值模拟,并绘制各种参数下弯管最大应力变化曲线图和DN1 200不规则Z形弯管在95°~135°转角下的线算图.模拟结果表明:随着膨胀垫厚度、壁厚、管径的增加,弯管应力最大值逐渐减小;随着补偿弯臂、曲率半径的增加,弯管应力最大值先减小后增大;DN1 200不规则Z形弯管的补偿能力随着转角角度的增加而削弱.
Assuming that the pipe material is an infinite elastic body, ANSYS finite element analysis software is used to simulate the irregular Z-shaped straight buried heating bends in the range of 95 ° ~135 °, and the curve of maximum stress of the elbow under various parameters is plotted And DN1 200 Irregular Z-bend at 95 ° ~135 °. The simulation results show that with the increase of the thickness, wall thickness and diameter of the expansion mat, the maximum bend stress decreases gradually. With With the increase of the radius of curvature, the maximum bending stress decreases first and then increases. The compensation ability of DN1 200 Irregular Z-bend is weakened with the increase of the rotation angle.