Simpel calculation of a Simple Membrane

Hey community,
I was just wondering how the Normal forces calcultions work of a simple #29 – Simple Membrane like in the tutorials, where there is a tension on all 4 corners and grafity. Someone here that can help me?

Hello @Poepsiedesie,
the normal forces in the membrane result from the initial strain load. Transverse displacements due to gravity do not contribute to the in-plane forces in this example, since the second order theory analysis is based on the assumption of small displacements.
– Clemens