ansys中pipe16划分网格

用pipe16划分网格时，为什么截面是个正八边形

2024年12月02日 12:44

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网友（1）：

可以对截面属性中修改，见如下所示
SECDATA, VAL1, VAL2, VAL3, VAL4, VAL5, VAL6, VAL7, VAL8, VAL9, VAL10, VAL11, VAL12
而针对pipe单元，sectype后的参数如下所示

SECDATA,Do, Tw, Nc, Ss, Nt, Mint, Mins, Tins
where
Do = Outside diameter of pipe. Does not include Tins.
Tw = Wall thickness (defaults to Do / 2, or “solid” pipe)
Nc = Number of cells along the circumference (8 《Nc《120, where a greater value improves accuracy slightly; default = 8)
Ss = Section number of the shell representing the pipe wall. Valid with ELBOW290 only.
Nt = Number of cells through the pipe wall. Valid values are 1 (default), 3, 5, 7, and 9. Cells are graded such that they are thinner on the inner and outer surfaces. Valid with PIPE288 and PIPE289 only.
Mint = Material number of fluid inside of the pipe. The default value is 0 (no fluid). This value is used to input the density of the internal fluid. Valid with PIPE288 and PIPE289 only. The fluid inside the pipe element is ignored unless the free surface in a global X-Y plane is added as face 3 (SFE) and is high enough to include at least one end node of the element.
Mins = Material number of material external to the pipe (such as insulation, biofouling, or armoring). The default value is 0 (no external material). This value is used to input the density of the external material. Valid with PIPE288 and PIPE289 only.
Tins = Thickness of material external to the pipe, such as insulation. The default value is 0 (no external material). Valid with PIPE288 and PIPE289 only.
从中我们可以看到第三项就是周向分割数，默认是8，最大是120，你可以针对这个修改
在你定义sectype语句后的secdata中修改
Main Menu>Preprocessor>Sections>Pipe>Edit
或者在菜单这个位置去找周向分割数来修改

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