Inextensible rod
= Inextensible rod
{title2=$\alpha=1$}
An <inextensible rod> preserves material <arc length>, so its <stretch ratio> is one. In an unshearable <elastic rod>, $d\mathbf r/dS=\mathbf d_3$ for reference <arc length> $S$.
= Inextensible rod
{title2=$\alpha=1$}
An <inextensible rod> preserves material <arc length>, so its <stretch ratio> is one. In an unshearable <elastic rod>, $d\mathbf r/dS=\mathbf d_3$ for reference <arc length> $S$.