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Thread: Navisworks Lift Animation

  1. #1
    Member TFuller's Avatar
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    Question Navisworks Lift Animation

    Short Request: Is there a better solution than Navisworks for animating/imitating/interpolating an object's real life behavior during a lift?

    Longer explanation: I am attempting to produce an animation in Navisworks showing a tank lift from horizontal to vertical with a single lift point at the tank head and the obligatory tight structure surrounding it. I would like to validate the size of the floor opening above that is necessary to get the tank standing upright. The tank sits on the first floor and extends up above the second floor. Pick point is above the second floor.

    Having played with animator but also having actual experience in lifting/rigging, it would appear that to reproduce real life behavior in animator, you just have wing it to get this to look right.

    I do not see a way to manage the bottom constraint which is the floor that the tank legs will roll across as the tank head is being lifted.

    Is this a project more worthy of 3DS Max? Are there tools more useful in recreating/understanding actual motion and not force-fed poorly interpolated motion?

    Or do I need to do some serious math using multiple instances of the model in ACAD/Revit to determine fixed translation/rotation values for about 20 different key frames?

  2. #2
    Mr. Revit OpEd
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    Have Inventor? It has motion simulation features, so does Solidworks fwiw. I think Max does too.

    Years ago my brother worked for a software developer that had a 2D based product that worked on top of AutoCAD for simulation, I think it was called Working Model. He gave me a trial and I used it once to model a very large projection screen tilt/retraction system we were building for a client. I skimmed the manual and mocked it up in AutoCAD. When I hit run everything fell off screen leaving me with a blank screen. WTF?

    When I read the manual more closely I learned that gravity is applied to the elements it acts on and each one needed to be anchored so gravity would only affect the parts that should move. I could assign a variety of gravity options including being based on earth, moon, mars... It worked a lot better once I anchored stuff.

    Edit: Just did a search Working Model is still around...
    Last edited by Steve_Stafford; January 31st, 2019 at 08:10 PM.
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    Member TFuller's Avatar
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    Yes - I am authoring the tank in Inventor, authoring the building and MEP elements in Revit and animating/reviewing in Navis. I'll look into the motion simulation aspect of Inventor. There may be more features in the constraint dialog that will help me.

    Working Model could be the thing I'm looking for. Very interesting.

    Thanks Steve!

  4. #4
    Forum Co-Founder Twiceroadsfool's Avatar
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    Quote Originally Posted by Steve_Stafford View Post
    Have Inventor? It has motion simulation features, so does Solidworks fwiw. I think Max does too.

    Years ago my brother worked for a software developer that had a 2D based product that worked on top of AutoCAD for simulation, I think it was called Working Model. He gave me a trial and I used it once to model a very large projection screen tilt/retraction system we were building for a client. I skimmed the manual and mocked it up in AutoCAD. When I hit run everything fell off screen leaving me with a blank screen. WTF?

    When I read the manual more closely I learned that gravity is applied to the elements it acts on and each one needed to be anchored so gravity would only affect the parts that should move. I could assign a variety of gravity options including being based on earth, moon, mars... It worked a lot better once I anchored stuff.

    Edit: Just did a search Working Model is still around...
    That animation of the dude in the forklift hitting the steering wheel, is Expert Level. I love it.
    Steve_Stafford likes this.

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