All Videos Tagged bending (Grasshopper) - Grasshopper

Vision-based compression bending test apparatus: Stiffness grading of plywood fiberglass composite strips

2019-03-10T14:29:14.500Z

This research project investigated the mechanical testing of plywood-fiberglass composites, to propose a materially informed modeling and fabrication method of bending-active strips. A vision based compression bending test apparatus has been developed to measure the flexural properties of plywood-fiberglass composite slender beams. The number of fiberglass layers and the orientation of the fibres along the strip have been examined, in order to calibrate the bending behaviour of each strip segment, aiming to encode complex 3d form into flat 2d strips, which bent and anchored at both ends, form non-symmetrical arch shapes of variable curvature. The results show that the proposed method enables a unified materially informed form finding process, where the geometry is approximated according to local material specifications at macro, meso and micro scale. Informing physics based simulations with material properties data derived from the proposed mechanical testing scheme, allowed for fairly accurate material behaviour simulations, with deviations attributed, besides the non-standardized apparatus measurements, mainly to the manual fiberglass layup and the number of mechanical tests conducted for the calculation of the mechanical properties of each fiberglass layout variation.

more: https://www.researchgate.net/publication/329016703_Vision-based_compression_bending_test_apparatus_Stiffness_grading_of_plywood_fiberglass_composite_strips

Test report sample : https://vimeo.com/242117397

using:
Grasshopper for Rhino3D (David Rutten)
grasshopper3d.com/

Kangaroo 2 grasshopper plugin (Daniel Piker)
https://www.food4rhino.com/app/kangaroo-physics

K2Engineering grasshopper plugin (Cecilie Brandt)
https://github.com/CecilieBrandt/K2Engineering

Human grasshopper plugin (Andrew Heumann)
andrewheumann.com/#computation

Tracker Video analysis and modeling tool (Douglas Brown)
physlets.org/tracker/
compadre.org/osp/bulletinboard/home.cfm

Tracks:
Poptraume -Traume-fon by rubber-records(gr)
https://rubber-recordsgr.bandcamp.com/track/poptraume-traume-fon

Poptraume - 4m2m bios records#002

Axial compression bending test mechanism for plywood, fiberglass composites - Tracker video analysis - grasshopper3d - human

2017-11-09T20:33:14.932Z

Axial Bending test mechanism for plywood, fiberglass composites. Video report of a test specimen plywood 3mm, with facegrain perpendicular to load axis combined with one layer of 195gr/m2 double twill fiberglass at 0 degrees.

Part of my Msc Thesis:
"Compression bending test mechanism for plywood - fiberglass composites.
Encoding complex 3d form into flat 2d strips through fiber orientation and layers count distribution."

more info:
http://dias.library.tuc.gr/view/69935
presentation pdf:
http://dias.library.tuc.gr/view/manf/69937

using:
Grasshopper for Rhino3D (David Rutten)
http://www.grasshopper3d.com/

Human grasshopper plugin (Andrew Heumann)
http://andrewheumann.com/#computation

Tracker Video analysis and modeling tool (Douglas Brown)
https://physlets.org/tracker/
https://www.compadre.org/osp/bulletinboard/home.cfm

Bending Member Relaxation Test

2013-12-11T13:32:43.722Z

first explorationns into active bending with karamba

Εuler Pavillion CODA+Topotheque

2012-07-17T10:49:09.713Z

Time lapse video, showing the construction process of a self standing laminar gridshell structure built with triaxial weaving timber battens. The project is a collaboration of CODA Barcelona Tech and Topotheque, and was realized in May 2012, within Bergenwood ,an annual international wood festival, taking part in Bergen, Norway.
Team: Pep Tornabell (CODA), Enrique Soriano (CODA), Evangelos Pantazis (TOPOTHEQUE)
Video Editing/ Photography: Evangelos Pantazis/Topotheque

Elastic sheet bending with Kangaroo Hinge force

2011-08-19T08:07:40.543Z

The Hinge force in Kangaroo can produce some very realistic sheet bending behaviour!