# Elastic wave in a bar from a pressure step (explicit)

A bar 10 × 0.1 × 0.1 of 200 one-point hex8 elements (E = 10⁴, ρ = 1, ν = 0, so c = 100) with a
pressure step of 1 on its end x = 10, solved explicitly to t = 0.06 (the front has travelled 6).