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Rotating anisotropic elastic coefficient matrix
Posted 7 giu 2011, 15:13 GMT-4 Geometry, Materials, Structural Mechanics Version 4.1 1 Reply
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Dear all,
my problem is as follows:
I try to do 3D simulation of mechanical properties of filament wound / hook wrapped pressure vessels made from fiber reinforced plastics. So the nature of the material is anisotropic and I had no trouble so far in simulation of simple plate structures.
For simple cylinders, I have to change the material properties in dependence of (x,y) if the cylinder axis is in z-direction. I know how to do this using eulerian angles, but the direct implementation in the elastic coefficients matrix is ... burdensome.
I tried to use the different coordinate systems available in 4.1, in particular the "Rotated System". There is a choice for the coordinate system in the Linear Elastic Material Model tab. But the change from "Global coordinate system" to a "Rotated System" by 90 degrees had no impact? I would have expected, that this should allow for rotation of the material properties.
Am I wrong? Are there more easy ways to implement this task?
Thanks in advance,
Markus
my problem is as follows:
I try to do 3D simulation of mechanical properties of filament wound / hook wrapped pressure vessels made from fiber reinforced plastics. So the nature of the material is anisotropic and I had no trouble so far in simulation of simple plate structures.
For simple cylinders, I have to change the material properties in dependence of (x,y) if the cylinder axis is in z-direction. I know how to do this using eulerian angles, but the direct implementation in the elastic coefficients matrix is ... burdensome.
I tried to use the different coordinate systems available in 4.1, in particular the "Rotated System". There is a choice for the coordinate system in the Linear Elastic Material Model tab. But the change from "Global coordinate system" to a "Rotated System" by 90 degrees had no impact? I would have expected, that this should allow for rotation of the material properties.
Am I wrong? Are there more easy ways to implement this task?
Thanks in advance,
Markus
1 Reply Last Post 9 giu 2011, 10:05 GMT-4
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Posted:
1 decade ago
The approach you described is correct. I used it several times before and it works. Probably something wrong with your inputs.
Nagi Elabbasi
Veryst Engineering
Nagi Elabbasi
Veryst Engineering