Dimension constraints on faces of 3d body?

Dimension constraints on faces of 3d body?

baxter.kylie
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Dimension constraints on faces of 3d body?

baxter.kylie
Contributor
Contributor

Hi. I have an irregularly shaped body that's effectively a loft between multi-segmented lines, the bottom of which is tangent to an ellipse (on the XY plane) and is effectively fully constrained. Essentially, it's all derived from a flat pattern that's wrapped around the ellipse. The line segments have a fixed length on the XY and should have a fixed angle on each facet (highlighted below).

How can I dimension the highlighted angle, per facet, to effectively adjust the overall shape of the top? 


facet-dimension.png

 

 

facet-flat.png

 

 

facet-sketch.png

 

 

 

 

 

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Message 2 of 3

SaeedHamza
Advisor
Advisor

Hi,

 

Could you please explain more?

What is the angle that you want everything to be updated according to it?

And are all the faces of the same dimensions?

 

Please show me exactly what are the values that you want to update and everything follows them so that I can help

And it would be great if you can share a screencast with your voice explaining it

 

Regards

 

Saeed

Saeed Hamza
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baxter.kylie
Contributor
Contributor

Hi,

I'll try to explain better.

If you'll note the first sketch, that sketch has some interior angles measured where the construction lines extend to. The second sketch is essentially a 3 dimensional representation of the first sketch if the first was wrapped tangent to an ellipse. I used the parameters of the first sketch to drive the upper and lower plane line segments. The bottom plane  of the second sketch exposes the ellipse at the bottom and the line segment is tangent to it. Placing the 3d line segment on the upper plane, however, is more problematic. It does not follow an ellipse and my only point of reference is the "start" of that line segment and the fact that it must end along the y axis. What I do know is that, within each facet, the angle at which the upper plane sketch meets the z-axis line should be the same angle at which I measured in the first (flat) sketch. I just don't know how to set a constraint like that.

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