¥Threshold: some particles feel forces
¥All N forced* particles must have balanced
forces.
–d N constraints on contact forces
in d dimensions
–Requires** at
least d N contacts.
¥Adiabatic jamming adds contacts one by one: stops when forces
balance
¥É expect marginally jammed state to have just d N contacts: isostatic
–i.e. minimal number of
contacts to fix particle positions.
¥Observed in simulation