Introduce an inverse mass property to each particle. The anchor point should have invmass = 0 and constraint relaxation should be weighted based on each particles invmass meaning that the anchor stays in place.
You will also have to ensure that particles with invmass = 0 are ignored during the update verlet phase.
Also, do you introduce drag into the system? If not then you should to ensure that the energy in the system disipates quicker.
If that doesn't make sense, post your code.
Stevie
You will also have to ensure that particles with invmass = 0 are ignored during the update verlet phase.
Also, do you introduce drag into the system? If not then you should to ensure that the energy in the system disipates quicker.
If that doesn't make sense, post your code.
Stevie