Bi-tangent Segment line doesn't function properly

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

Hi,

I have tried this numerous times and it seems as if Evolve's algorithm doesn't properly calculate the 2nd tangency when using Bi-tangent Segment line. I have drawn 2 circles next to each other. One with larger radius and one with smaller radius. When I used Bi-tangent segment line to draw a line that is tangent to both circles the Evolve only makes the line tangent with one circle and not both. Please see attachment. This has been really frustrating  when you spend lots of time trying to trouble shoot what is suppose to be a simple operation. All other mechanical modeling software I have worked with the Bi-tangent line works properly (It automatically snaps the line to both curves so that the line is tangent to both curves). Is there something I am perhaps doing wrong? I did exactly what the tool asked me to do. In the attachment below you can see that Evolve finds tangent with first circle (large circle) but fails to find tangent with the second circle (Small circle)

 

<?xml version="1.0" encoding="UTF-8"?>Screenshot (53).png

Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2018

    This is one of the reasons I stopped playing with the trial version, does not work as expected. Btw don’t expect any answers here in the forum, it’s very rarely checked by the developer. Maybe contact support directly...

  • Mario_21478
    Mario_21478 Altair Community Member
    edited May 2018

    Hello,

    I'm still using 'Curves->Bi-tangent segment', and it still works for me. See attached picture.

    It still works without any snap filter.

    Best Regards, Mario

     

    <?xml version="1.0" encoding="UTF-8"?>image.thumb.png.1ef6103beb803587763d26e2d87a7b0d.png

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2018

    Hmm. It still does not work for me...were there any bugs with this tool before? Is there perhaps an update I am missing in correcting this bug?

  • Darren Chilton_21533
    Darren Chilton_21533
    Altair Employee
    edited May 2018

    Hi Mark,

    What version of Evolve are you using, and are you on Windows or Mac?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2018

    Version 2017.3.1  I am on windows. 

  • ArjunA_22390
    ArjunA_22390
    Altair Employee
    edited May 2018

    Evolve 2017.3.2 has been available for a while now. Please download and try this tool again.

    https://solidthinking.com/DownloadProducts.aspx?category=Download&amp;item=Products

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2018

    Ok. Good to know. Thanks