why does a very stiff cloth not slow down a RBD object?

   4314   4   2
User Avatar
Member
17 posts
Joined: Sept. 2011
Offline
hey guys,

quick question really.

I'm currently trying to achieve the effect of a metal plane being dented and eventually punctured as a RBD object gets thrown at it. Ive managed to get it to puncture because making it tearable does this easily as the RBD objects just goes straight through. However, when i just want it to dent, if i drop a RBD object on top of a cloth plane with stiffnes turned up very high, the object just keeps dropping and the plane just keeps bending to accomodate it giving very ugly results.

can anyone give me a solution that will cause the deforming of the cloth to slow down the dropping RBD object and eventually bring it to a hault?

Many thanks,

Chris
User Avatar
Member
349 posts
Joined: Aug. 2006
Offline
Try changing the default mass for the RBD object. 1000 mass units is a LOT. Even high cloth strengths would find it hard.
User Avatar
Member
691 posts
Joined: June 2006
Offline
Currently cloth can't have a two way relation with a RBD, I recommend you to convert your RBD to a cloth object with very high stiffness.
Feel The Knowledge, Kiss The Goat!!!
http://www.linkedin.com/in/alejandroecheverry [linkedin.com]
http://vimeo.com/lordpazuzu/videos [vimeo.com]
User Avatar
Member
17 posts
Joined: Sept. 2011
Offline
ah, thank you

it's working! however a bit too well, when i drop a stiff sphere on top of a stiff plane they just bounce off each other without deforming. im guessing the problem is the sphere isnt going fast enough so my next question is how do i give the cloth object a vector? in the masterclass on crumpling it's done by just adding a createattribute nude, turning it into a vector and giving it a value…however when i try to replicate this it does nothing. anyone know what im doing wrong?

thanks!
User Avatar
Member
696 posts
Joined: March 2009
Offline
You must enable plastic deformations in the Cloth solver and then play with the plastic deformation attributes in the cloth object to get the desired effect.
Toronto - ON
My Houdini playground [renderfarm.tumblr.com]
“As technology advances, the rendering time remains constant.”
  • Quick Links