nded from the centerline at a specified thickness, which may vary along the stent.Two parameters, tmid and tend, control thickness variation
along the segment’s longitudinal direction according to the kinematically admissible Hermitian
curve:
t (d) = tend + t(3d2 − 2d3) 0 ≤ d ≤ 1
t = tmid − tend
where d is the normalized distance along the segment’s
NURBS curve between its endpoint and midpoint. This
form ensures there are no discontinuities in thickness at
the segment midpoint or at the interface of segments in the
overall stent.
2)These normals are then checked and subject to a filleting
procedure to remove re-entrant corners, resulting in
two external sets of boundary coordinates defining the
external edges of the segment’s mid-plane.
3) This plane of nodes is then extruded at a specified angle
(see Section 2.3) to generate a 3-D set of nodes defining
the finite element mesh.
4) These nodes are then mapped to cylindrical coordinates.
5) Finally, 20-node brick elements are generated for finite
element analysis.
I have generated the centerline using 8 control points with degree 7 .
Would be great if anyone can help me with the drawing the normals from the centerline of specified length governed by Hermitian equation,so as to generate the 2D model of a stent (Please refer to the attached figure of a 2D stent and extruded figure) ,using Grasshopper.
The centerline of a single stent segment is representedas a NURBS curve.…
bject, a list, or a tree... and also understand why things aren't working in your def.
In your definition there are 6 hexagons and 3 circles, but the hexagons are exactly overlapped 2 by 2...
But you grafted everything! This make your 9 curves a tree with be 9 branch with only 1 item inside.
So sorting here is meaningless, every branch have only 1 curve, so there's noting to sort out.
I don't know how you want to use the loft component.
Explain how you wanted to use the double overlapped hexagons...
See attached if is someway useful....
Help us help you.
Cya :D…
e (I) often forgot them and their utility....
Rotate, move, mirror the triangle to the 2nd position, use the combined Transformation Datas to transform again 2nd triangle to get the 3rd... and so on.
As i built up the base golden triangle starting from 3 vertex of a penthagon, I've also found funny behavior while changing the used vertex.... see gif attached.
I hope this is somehow what you wanted to do...
Cya :D
Maje…
uld(?) make(?) some(?) sense. But remember: in programming sooner or later you pay for the laziness.
2. Empty branches on complex code require additional questions/checks. If at making time you can avoid/manage them ... well ... avoid/manage them (unproved Theorem N666.6 + LOUC (Law of unintended consequences)).
3. V2 is always the better thing.
Methods with public variables:
Well imagine a recursion:
public void DoSomething(a,b,c,d,..., ref y, ref z) that calls itself. Firstly using void (and ref) is far more elegant than declaring the type (and using out for y,z). Secondly if there's a myriad of variables (with long names) you can skip including them in the DoSomething (twice since is recursion) and just use them. The locomotive syndrome you know. …
volute Tools Pro, Plan C: C# using LibShapeOp stuff, Plan D: C# using Gegenbauer/Chebyshev "filtering"/"noise" correction). Unfortunately I have classified the latter as stuff for internal use only in my practice and ... well ... hmm ... it's not for sharing, I'm so sorry.
2. Or by offseting the hex curves on surface (dist according the attractor(s) influence) and then lofting this with that (offset not planar ... but "close" if the divisions and the topology are "suitable"). Unfortunately this is the slowest "method" known to man. Unacceptable by any means.
3. Or by modifying this C# with regard the planarity of the "inwards" loft profile (that's rather very easy):
But you have very limited time and something urgent occurred in my practice (as usual) + today is the Assen MotoGP and N46 is on pole! therefor I'm not sure that the whole combo could/would be ready on time for you.
Moral: next time > avoid doing/scheduling things ... er ... hmm ... the Greek way [i.e.: the very last moment at 23.59 that is, he he]). This method is known in Greece as "bakaliko" (don't ask what this means).…
e in Euclidean space then the distance metric can be discontinuous:
Discontinuous means that a tiny change in input may result in a large change in output. Observe the image above, we start measuring euclidean distances from point A. At first the process appears to be continuous. We measure at distance b and we get point B. We increase the distance slightly to c and we get point C, which is very close to point B. We increase the distance slightly again to d, but now suddenly we're in a completely different location. This jumping behaviour can mean that certain questions (such as: "how do I divide this curve into 4 points, all equally far apart?") do not have an answer. It could be possible for 3 and 5, but not 4.
Another problem is that there may be multiple solutions. In the image above the point D isn't the only point that is d units away from A and coincident with the curve. There may be any number of those points depending on the shape of the curve, the location of A and the value of d. And of course once you have two (or more) solutions, you can have two (or more) answers. Then each of those solutions may yet again have more than one outcome for the next point in the chain and before you know it the question you asked has 35295 different answers and good luck trying to find one you like.
Now of course sometimes it is possible to answer your question unambiguously. I made a solution that uses Galapagos. It's pretty slow, and it'll get slower the more segments you want:
--
David Rutten
david@mcneel.com
Tirol, Austria…
Added by David Rutten at 4:26am on September 9, 2013
ation model, and I would be very grateful if you could help me to have a look.
1. The air change rate is assumed to be 0.5 times per hour and the infiltration rate is 0.1 times per hour, so I sum these two values and set the converted infiltration rate per area as 0.0005 m3/s-m2. I don’t know whether it is appropriate to sum these numbers and input them together in the “infiltration rate per area” part?
2. I found in the latest version, there is a component called “air flow”, which can edit natural ventilation, but if I set minIndoorTempForNatVent equal to the heatingSePt as you showed once in the forum, the simulation result of heating is ridiculous high (like 7000 kwh/m2a). If the minIndoorTempForNatVent value is set to be a little higher than the heatingSePt, the heating result looks much normal (like 200 kwh/m2a). I don't know whether there is anything wrong with my model or settings, and hope you could help me.
3. I want to add the cooling and heating COP values (2.8 and 0.8) in my simulation process. I have noticed that in the forum, you mentioned that the new component "setEPIdealAir" can help to add COP, but I am still very confused about how exactly it works. I would be very grateful if you could show me again here.
4. I tried to change the WWR and the U-value of the wall, but I found the results of cooling and heating (especially cooling) vary little, which is not supposed to be like that. I guess there should be something wrong...
That's all for my questions.
Thank you so much for your time in advance. I would be very grateful if you could help me in this model. It would be very helpful for my work.
Thank you again!
Cheers,
Yao…
component and connect to L data from A and to i data from B I would like it to make tree like :
path {0,0}
a
b
c
path {0,1}
b
c
d
path {1,0}
e
f
g
path {1,1}
f
g
h
…
; }
DA.SetDataList(0, crvS);
distance << is "double (input)".
But... still have error.
Even all there below have error.
crvList[0].OffsetOnSurface(brep.Faces[0], distance, 0.001));
crvList[0].OffsetOnSurface(brep.Faces[1], distance, 0.001));
crvList[0].OffsetOnSurface(brep.Faces[2], distance, 0.001));
crvList[0].OffsetOnSurface(brep.Faces[3], distance, 0.001));
crvList[0].OffsetOnSurface(brep.Faces[4], distance, 0.001));
I don't know why it's still doesn't work.
…