Light mass wheel problem

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enbo
Posts: 4
Joined: 17 Dec 2018, 02:59

Light mass wheel problem

Post by enbo » 17 May 2019, 03:36

Dear forum :

I have a question.

My robot works in Newton simulation environment and has a large mass body(70kg), two active wheels, and two passive wheels.
The passive wheels are very small and light(0.1kg).

I found that when I use light wheels, the wheels will sink below the ground. however, when I make the mass bigger(20kg), it will not happen.

what should I do to make the light wheels work well?

Thanks

fferri
Posts: 304
Joined: 09 Sep 2013, 19:28

Re: Light mass wheel problem

Post by fferri » 17 May 2019, 08:29

Does it happen also in the Vortex engine?

With the other engines there's nothing much you can do. This situation where one body's mass is orders of magnitude bigger/smaller will often lead to unstable simulations.

coppelia
Site Admin
Posts: 7123
Joined: 14 Dec 2012, 00:25

Re: Light mass wheel problem

Post by coppelia » 17 May 2019, 10:44

Hello,

make sure to carefully read this page, in particular design considerations 6-8.

Cheers

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