Construction:
Cross canopy 20sq.m consisting of central part 2m x 2m and 4 square blades 2m x 2m,
20 suspension lines, each blade has one central slot,
grid of strengthening ribbons 0.5m x 0.5m everywhere on the canopy.

Textile materials (linear properties in this particular task):
fabric Young modulus E=1000N/m in weft and warp direction, unit mass =0.01kg/sq.m,
ribbons and suspension lines Young module E=250N/m, unit mass =0.0025kg/sq.m.

Load: Constant pressure difference on the canopy = 10Pa.

Boundary conditions: symmetry 1/8

Additional information: simulate infinite suspension lines.

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