Sine Wave Generation

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

A model I am trying to generate requires a sine wave to make properly. Using the NurbsCurve and other curve drawing options, I can approximate a sine wave somewhat but the error is apparent when I skin the lines together. Is there any other way to generate a true sine wave in Evolve?

 

Thanks!

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Answers

  • ArjunA_22390
    ArjunA_22390
    Altair Employee
    edited February 2017

    Ross,

    Unfortunately we do not have a tool for sine wave generation inside Evolve. However, there is a work around, that although tedious, works.

    1. Create a sine wave of any shape using a simple formula in excel
    2. Export the co-ordinates to a text file (.txt)
    3. Add the total rows as the first line and save the text file again
    4. Import this text file into Evolve as a point cloud
    5. Create a curve from points using 'Curve from point cloud' tool.

    In the excel file attached I have used this example: Generate a 1Hz Sine Wave, with ω=2π and Amplitude 1. f = 1 Hz, ω = 2π, therefore, T=1 sec

    The sine wave or sinusoid in its most basic form is: y(t) = A *sin(ωt+θ) Where: • A = Amplitude • ω=Angular frequency/ Circular frequency=2πf (rad/s) • f=1/T, where T=Period in seconds • θ=phase • t=time (s)

    To edit the shape, please change the f value to the desired frequency.

    Hope this helps you in some way. We will definitely be adding some tools to create parabolas, hyperbolas, sine and cosines in the near future.

     

     

    Unable to find an attachment - read this blog

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