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Thread: House collapse / what should i consider when modeling the house if it should collapse

  1. #1
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    House collapse / what should i consider when modeling the house if it should collapse

    Hi :-)

    I started a hobby animation project in DAZ Studio a long time ago. Now I need Lightwave's help. And since I still consider myself a Lightwave Newbee, the help of you professionals.

    It is about ... a house should collapse. My question is now the following.

    What should I consider when modeling the house? Are there any things that I should consider when modelling?


    best regards

    kievi

  2. #2
    Curmudgeon in Training Ma3rk's Avatar
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    You might need to get a bit more specific.

    There are tools in both Modeler & Layout that work together to achieve this sort of thing. Take a look at this sample then read up more. It does take some planning.

    https://docs.lightwave3d.com/lw2019/...or-destruction
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    Quote Originally Posted by Ma3rk View Post
    You might need to get a bit more specific.

    There are tools in both Modeler & Layout that work together to achieve this sort of thing. Take a look at this sample then read up more. It does take some planning.

    https://docs.lightwave3d.com/lw2019/...or-destruction

    ok, thanks for your answer :-)

    give me some hours, and you will see the specifics.

    the first thing I've already learned. never just say. nothing is easy. :-)

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    Click image for larger version. 

Name:	stadtarchiv.png 
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ID:	147189




    Good morning, :-)

    ok, here are a few more details.

    In front of the house is a deep hole. This is a construction site, for an underground railway.
    Then there is a water ingress in the construction site hole, the ground softens. A part of the house falls into the pit. Another part collapses.

    Thanks for your time

    kievi

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    Ok, no more answers.
    So i will take the learning by doing way. :-)

  6. #6
    Hi,

    Just check out Bullet section of manuals and model your model in mind with how you want it destructed so if you want complete wall to fall then you just modle that as separate piece and use Bullet dynamics.
    If you want it to fracture and collapse then you need modeler Fracture tool also and much more advanced planing.
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  7. #7
    Electron wrangler jwiede's Avatar
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    Quote Originally Posted by kievi View Post
    Click image for larger version. 

Name:	stadtarchiv.png 
Views:	55 
Size:	21.1 KB 
ID:	147189




    Good morning, :-)

    ok, here are a few more details...
    Unless I missed my guess, you're modeling the collapse of the Cologne historic archives building while they were building the Stadtbahn.

    I'd say the main concern is to build the front (and front roof area) of the building thick enough to work well with fracture tools. If anything, you want to "overbuild" the areas you need to collapse, because the debris won't look substantial enough otherwise, and whatever physics engine you use, they all tend to prefer larger over smaller pieces.
    Last edited by jwiede; 05-09-2020 at 05:03 PM.
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    Quote Originally Posted by jwiede View Post
    Unless I missed my guess, you're modeling the collapse of the Cologne historic archives building while they were building the Stadtbahn.

    I'd say the main concern is to build the front (and front roof area) of the building thick enough to work well with fracture tools. If anything, you want to "overbuild" the areas you need to collapse, because the debris won't look substantial enough otherwise, and whatever physics engine you use, they all tend to prefer larger over smaller pieces.
    Hi Jwiede,
    I'm surprised. Why in san jose do you know about the construction errors of Cologne engineers.
    And yes, thatīs my intension.

    Thank you very much for your comment. Actually iīm testing, to find the real size.
    Best regards
    kievi

  9. #9
    Registered User gdkeast's Avatar
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    You might watch this video:
    https://www.youtube.com/watch?v=8MJl0LV_s5c

    By controlling the glue strength, you should be able to control how the structure collapses.

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    Quote Originally Posted by gdkeast View Post
    You might watch this video:
    https://www.youtube.com/watch?v=8MJl0LV_s5c

    By controlling the glue strength, you should be able to control how the structure collapses.
    Thanks for the very useful link.

  11. #11
    Electron wrangler jwiede's Avatar
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    Quote Originally Posted by kievi View Post
    Hi Jwiede,
    I'm surprised. Why in san jose do you know about the construction errors of Cologne engineers.
    And yes, thatīs my intension.
    There are Science Channel TV shows on here (originating from UK, I believe) that discuss forensics for various engineering mishaps, and they covered that collapse. I used to do a bit of freelance and pro-bono viz work in engineering forensics along similar lines, so it's an area where I still pay some attention (though my SW career has since consumed all the free-time I used to put towards such efforts).
    John W.
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    Quote Originally Posted by jwiede View Post
    There are Science Channel TV shows on here (originating from UK, I believe) that discuss forensics for various engineering mishaps, and they covered that collapse. I used to do a bit of freelance and pro-bono viz work in engineering forensics along similar lines, so it's an area where I still pay some attention (though my SW career has since consumed all the free-time I used to put towards such efforts).
    Of course, I don't have the specialist knowledge that you have. But I think there was a lot of messing around.
    And warning signs, like the leaning church, have been given too little importance.

    But the world has become small :-)

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