The generalized Newtonian equations of motion governing the dynamic fish model take the form of a set of coupled second-order ordinary differential equations:
where
is the net internal force on node i due to the viscoelastic units
connecting it to nodes 
, where 
is the index set of
neighboring nodes. Finally, 
is the external
(hydrodynamic) force on node i.
| Xiaoyuan Tu | January 1996 |
