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Displacement of a point or node within global coordinate frame
Posted 13 feb 2017, 05:54 GMT-5 Mesh, Structural Mechanics 2 Replies
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Hello community.
I'm able to access displacement (component x) of a point by using "evaluation at a point functionality" as part of postprocessing.
This displacement seems to be defined within the material frame. How can I access the absolute value within the global coordinate frame?
Many thanks in advace
I'm able to access displacement (component x) of a point by using "evaluation at a point functionality" as part of postprocessing.
This displacement seems to be defined within the material frame. How can I access the absolute value within the global coordinate frame?
Many thanks in advace
2 Replies Last Post 13 feb 2017, 18:00 GMT-5
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Posted:
8 years ago
Hi,
The displacement is a special vector in the sense that it belongs neither to the material nor to the spatial frame (or maybe to both?). It actually provides the transformation between the two frames.
Anyway, it does not really matter. The displacements are always represented in the global system.
Regards,
Henrik
The displacement is a special vector in the sense that it belongs neither to the material nor to the spatial frame (or maybe to both?). It actually provides the transformation between the two frames.
Anyway, it does not really matter. The displacements are always represented in the global system.
Regards,
Henrik
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Posted:
8 years ago
Hallo Henrik,
thanks for your quick response and explanation. There is one thing I don't understand:
the x-coordinate value of the point/node I mentioned is not zero (~-0.5mm) (I can see it within the Graphics Window) but the initial value of u_solid coming from the Point Evaluation is zero (-4.0825E-11). Then the value alters crossing zero. What is wrong here?
With kind regards
Alexander
thanks for your quick response and explanation. There is one thing I don't understand:
the x-coordinate value of the point/node I mentioned is not zero (~-0.5mm) (I can see it within the Graphics Window) but the initial value of u_solid coming from the Point Evaluation is zero (-4.0825E-11). Then the value alters crossing zero. What is wrong here?
With kind regards
Alexander