Index

A

argparse (Python module) ArgumentParser (Python class)

averaging geometric

C

centered difference

E

energy principle

error global

F

finite differences centered forced vibrations

forward-backward Euler-Cromer scheme frequency (of oscillations)

G

geometric mean

H

Hz (unit)

M

making movies mechanical energy mechanical vibrations

mesh finite differences mesh function

N

nonlinear restoring force

nonlinear spring

O

oscillations

P

period (of oscillations)

phase plane plot

S

stability criterion

V

vibration ODE