Filament bending modulus
= Filament bending modulus
{title2=$B$}
The <filament bending modulus> multiplies squared <curvature of a space curve> in the <bending energy>, $E_b=(B/2)\int\kappa^2\,ds$. It has dimensions force times <length> squared. In the small-slope <Monge representation>, the leading elastic force per unit <length> is $-By_{xxxx}$.