fedoo.time.ExplicitNewmark.needs_end_step_acceleration

property ExplicitNewmark.needs_end_step_acceleration

True when the driver must re-evaluate acceleration at u_{n+1}.

Symplectic central difference (velocity Verlet) needs the acceleration at the end-of-step displacement to close the velocity update. Schemes that recover their end-step kinematics from the predictor alone return False.