dForce Static surface - when and how to use it?

bfarber2011

Can't really find any good youtube tutorials on dForce STATIC surface, seems that dunamic surface modifier is a lot more useful. Just learned that it helps when it comes to collision between items like fabric and other surfaces such as furniture. I could sertantly find it useful if I knew more about it.

barbult

You don't need to apply dForce static surface to collision items. dForce dynamic surfaces will automatically collide with all visible surfaces. Applying dForce static surface will give you the ability to set the friction value on a collision surface. That is the only benefit I know about.

bfarber2011

barbult said:

You don't need to apply dForce static surface to collision items. dForce dynamic surfaces will automatically collide with all visible surfaces. Applying dForce static surface will give you the ability to set the friction value on a collision surface. That is the only benefit I know about.

Could you please give an example of  "setting friction value on a collision surfafe" ?  and the benefit of it. Sorry but there is just nothing on that subject to my knowledge

Richard Haseltine

bfarber2011 said:

barbult said:

You don't need to apply dForce static surface to collision items. dForce dynamic surfaces will automatically collide with all visible surfaces. Applying dForce static surface will give you the ability to set the friction value on a collision surface. That is the only benefit I know about.

Could you please give an example of  "setting friction value on a collision surfafe" ?  and the benefit of it. Sorry but there is just nothing on that subject to my knowledge

The friction setting determines how easily things slide over the surface. if you want a different value, to change the behaviour, then you need to add the Static Surface modifier and go to the Surfaces pane's Editor tab.

bfarber2011

Thank you

zszabo2000_015a88f8bf

'The friction setting determines how easily things slide over the surface. if you want a different value, to change the behaviour, then you need to add the Static Surface modifier and go to the Surfaces pane's Editor tab.\

Why not just use the friction setting(s) of the dynamic material? Is there a benefit to assigning different friction coefficients to both the dynamic and the static materials (other than maybe finer adjustments -- which likely makes little difference, as the simulation output even at coarse settings is essentially the same)?

barbult

zszabo2000_015a88f8bf said:

'The friction setting determines how easily things slide over the surface. if you want a different value, to change the behaviour, then you need to add the Static Surface modifier and go to the Surfaces pane's Editor tab.\

Why not just use the friction setting(s) of the dynamic material? Is there a benefit to assigning different friction coefficients to both the dynamic and the static materials (other than maybe finer adjustments -- which likely makes little difference, as the simulation output even at coarse settings is essentially the same)?

You may not want the dForce dynamic item to interact exactly the same way with all collision items. Applying a static surface modifier gives you more control over how the dynamic item interacts with the other collision items with regard to friction. Here is a trivial example:

1) No Static Surface modifier on the cubes. The plane has a Dynamic Surface modifier with default friction setting

2) Static Surface modifier applied to the cubes. One cube has higher friction setting than the other. The plane has a Dynamic Surface modifier with default friction setting

 

bfarber2011

Thank You!

zszabo2000_015a88f8bf said:

'The friction setting determines how easily things slide over the surface. if you want a different value, to change the behaviour, then you need to add the Static Surface modifier and go to the Surfaces pane's Editor tab.\

Why not just use the friction setting(s) of the dynamic material? Is there a benefit to assigning different friction coefficients to both the dynamic and the static materials (other than maybe finer adjustments -- which likely makes little difference, as the simulation output even at coarse settings is essentially the same)?

bfarber2011

Thank you so much for sharing!

barbult said:

zszabo2000_015a88f8bf said:

'The friction setting determines how easily things slide over the surface. if you want a different value, to change the behaviour, then you need to add the Static Surface modifier and go to the Surfaces pane's Editor tab.\

Why not just use the friction setting(s) of the dynamic material? Is there a benefit to assigning different friction coefficients to both the dynamic and the static materials (other than maybe finer adjustments -- which likely makes little difference, as the simulation output even at coarse settings is essentially the same)?

You may not want the dForce dynamic item to interact exactly the same way with all collision items. Applying a static surface modifier gives you more control over how the dynamic item interacts with the other collision items with regard to friction. Here is a trivial example:

1) No Static Surface modifier on the cubes. The plane has a Dynamic Surface modifier with default friction setting

2) Static Surface modifier applied to the cubes. One cube has higher friction setting than the other. The plane has a Dynamic Surface modifier with default friction setting

 

bfarber2011

bfarber2011 said:

Thank you so much for sharing!

barbult said:

zszabo2000_015a88f8bf said:

'The friction setting determines how easily things slide over the surface. if you want a different value, to change the behaviour, then you need to add the Static Surface modifier and go to the Surfaces pane's Editor tab.\

Why not just use the friction setting(s) of the dynamic material? Is there a benefit to assigning different friction coefficients to both the dynamic and the static materials (other than maybe finer adjustments -- which likely makes little difference, as the simulation output even at coarse settings is essentially the same)?

You may not want the dForce dynamic item to interact exactly the same way with all collision items. Applying a static surface modifier gives you more control over how the dynamic item interacts with the other collision items with regard to friction. Here is a trivial example:

1) No Static Surface modifier on the cubes. The plane has a Dynamic Surface modifier with default friction setting

2) Static Surface modifier applied to the cubes. One cube has higher friction setting than the other. The plane has a Dynamic Surface modifier with default friction setting

Thank you!