# parametric equation driven a curve

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• Last Post 07 November 2017
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omarjumaah posted this 04 October 2017

Hello all,

I need to draw equation driven curve in designmodeler, then optimize it. any hints are valuable to me. thank you in advance,

Omar

vganore posted this 05 October 2017

One way is to convert your equation into number of points governing curve, create a text file and load it under Desigmodeler through 3d curve option. More details are available under help documentation.

Vishal Ganore, ansys.com/student

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omarjumaah posted this 05 November 2017

peteroznewman posted this 05 November 2017

What is the equation and what parameters can be varied to optimize the curve?

What is the range that each parameter can take?

I use SIEMENS NX CAD system and can create parametric curves in that.

I can import that CAD file into DesignModeler and can include the parameters for a Design Optimization in ANSYS.

Do you have a CAD system or are you limited to working in DesignModeler?

cos2pi posted this 07 November 2017

Hi

I have the same problem, can you solve it by spaceclaim, or Solidworks.

I would prefer that it could be solved by design modeler, since i then avoid converting and importing issues with units and edges.

vganore posted this 07 November 2017

If you wish to use Design Modeler (DM) then please follow following steps:

1. Take your equation, convert it into coordinate points (x.y and z) governing that equation.

2. Write it into 3d curve usable format (see the snapshot that I uploaded before)

3. Create text file (sample: paste following into text file (.txt)

1 1 10.1234 15.4321 20.5678

1 2 15.2468 20.1357 25.1928

1 3 5.5555 6.6666 7.7777

4. Use 3d curve option from DM

It will give you the line body for your future operations.  All the best.

Vishal Ganore, ansys.com/student

cos2pi posted this 07 November 2017

Can i use the same method, if i want to create ít as a 2D sketch and then extrude?

The thing i wish to draw is a wavy channel coldplate.  Where the wavy pattern is a sinusoidal function with variable amplitude and frequency.

So i need a thickness on the fin, and a height

vganore posted this 07 November 2017

Yes, It is possible. Convert your curve into three points coordinate system (x,y,0). Z coordinate for all points will be zero.

Vishal Ganore, ansys.com/student