6.4. STRUCTURAL ANALYSIS
Figure C31: Mesh edges length variation analysis. Quadrilateral topology
Figure C32: Mesh edges length variation analysis-self load. Quad topology
At left, it is noticed the stress in the nodes, also how is torsioned the membrane. At right the loading condition affects the middle zone of the structure. The central areas of the quads remain unstressed.
At left, it is noticed the stress in the nodes, also how is torsioned the membrane. At right the loading condition affects the lower zones and are concentrated more in the singularities. The central poligon areas remain unstressed.
Figure C33: Mesh edges length variation analysis. Triangular Topology
Figure C34: Mesh edges length variation analysis-self load. Trg. topology
At left, it is noticed the stress in the nodes, also how is torsioned the membrane. At right the loading condition affects the singularities. Unstressed areas appear according to the topology.
Figure C35: Mesh edges length variation analysis. Hexagonal Topology
Figure C37: Mesh edges length variation analysis-self load. Hex topology
The present graphics display an interesting way to analize hybrid structures. At the left we have the mesh edges length variation analyisis of the mesh between the initial mesh before the dinamic relaxation and after of it. It is noticed that the nodes parts are more stressed. In the right side we have show the difference lenght between the pre-stress system and the same one subjected to its self-weight. It can be appreciate how behave each the structure according to their topology. The zones in blue represet the increasing lenght areas, the red ones represents decreasing lenght ones. It can be noticed that the hexagonal approach has non-stressed areas inside the
poligons configuration. In the oposite situation we have the triangular that is a very stressed system. The most stressed areas are the nodes in wich the planks and the fabric meet. The physical experimentation demostrate the siffness of this structures, even the membrane behavior acts better. Some add-ons of grasshopper don’ t offer accurate analitical tools to get more accurate analysis, but is know that it is being developed. The ideal structural analysis consist in test the structure in different stagespre-stressed, self-load and then against the wind and the snow.
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