This Blender plugin creates a 3D mesh of a deformed hollow pipe under linear pressure along the length of the pipe.
Equation of the deformed surface:
w(x,y)=w_0 \sin \frac{m \pi x}{l} \sin \frac{n y}{R};\quad \varphi_u(x,y)=\varphi^0_u \sin \frac{m \pi x}{l} \sin \frac{n y}{R}