Compression
bending test mechanism for plywood-fiberglass composites. Encoding complex 3d
form into flat 2d strips, through fiber orientation and layers count
distribution.
Research project by Alexandros investing on the gap between physical and digital modeling and testing.
A compression bending test mechanism has been developed to measure and document the bending properties of plywood-fiberglass composite slender beams, employing Tracker, a digital video analysis and modelling tool and Grasshopper, a graphical algorithm editor for Rhino 3d.
A compression bending test mechanism has been developed to measure and document the bending properties of plywood-fiberglass composite slender beams, employing Tracker, a digital video analysis and modelling tool and Grasshopper, a graphical algorithm editor for Rhino 3d.
Fiberglass is distributed along
planar plywood strips, in one or more layers, in four warp-weft fiber
directions of 0, 30, 45 and 60 degrees. The deflections, forces and geometry of
the bending tests are analyzed and classified per case, in order to derive the
bending modulus, the proportional limit and the minimum bending radius of
various plywood-fiberglass layout schemes.
The results are embedded into
K2Engineering, a structurally calibrated extension of Kangaroo2 grasshopper
plugin, which is a 3DOF Dynamic Relaxation interactive simulation engine.
K2engineering offers direct input and output of structural data that define the
resulting shape and can be used to evaluate its structural performance
respectively. This enables a unified, multiscalar materially informed form
finding process, where the final geometry is approximated according to the
local material specifications at a macro, meso and micro scale. General
dimensions, i.e. width length and thickness, the number of fiberglass layers
and the orientation of wood grain and glass fibers respectively, along with the
resin formulation and the chosen boundary conditions can output a variable
stiffness strip, that when bent, converges into a non-symmetrical shape of
variable curvature without the need of a secondary support system.
for more details: http://dias.library.tuc.gr/view/69935
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