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scan 3D surface and generate mesh in FEM

scan 3D surface and generate mesh in FEM# Computation - 科学计算

r*g2003-06-12 07:06

1 楼

I'm wondering if some body here has the experience of scanning a 3D specimen
and then get its surface profile. After that, how to incorporate it into FEM
software to generate mesh. So, the questions are:
What kind of hardware did you use -- I mean the scanning machine.
And, what kind of software did you use to generate FEM mesh using the sacnned
surface?
In general, the scanning result will be some 'point cloud'. I wonder how to
generate FEA mesh by using this point cloud.
Any suggestion will be

sc2003-06-12 07:06

2 楼

阿哈,这事我干过,关键字:
surface reconstruction,
用march cubic algorithm(这个比较简单)
结果你就出来一堆三角形,然后写成dxf文件(这个可以自己看一看dxf格式)
反正dxf文件是比较标准的格式,各种软件都支持的.

【在 r*******g 的大作中提到】

: I'm wondering if some body here has the experience of scanning a 3D specimen
: and then get its surface profile. After that, how to incorporate it into FEM
: software to generate mesh. So, the questions are:
: What kind of hardware did you use -- I mean the scanning machine.
: And, what kind of software did you use to generate FEM mesh using the sacnned
: surface?
: In general, the scanning result will be some 'point cloud'. I wonder how to
: generate FEA mesh by using this point cloud.
: Any suggestion will be

w*f2003-06-12 07:06

3 楼

Actually your problem is how to get isosurface from volume
data, there are many algorithm available.
One is marching cube algorithm. There is classe in VTK(visual
tool kit) from kitware company which can do this job very well.
The thing you need to do is to output the isosurface to
CAD model you need. Next step is import it to your
FEA software like PATRAN or ABQUAS to do your analysis.

【在 r*******g 的大作中提到】