Hybrid-Active Winding
Hybrid-Active Winding
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Years: 2020-2021
Team: Alexandra Pittiglio, Ayşe Esin Durmaz
Tutors: Rebeca Duque Estrada, Hans Jakob Wagner
Advisors: Achim Menges, Jan Knippers
University: University of Stuttgart
Institutes: Institute for Computational Design and Construction (ICD), Institute of Building Structures and Structural Design (ITKE)
Hybrid-Active Winding is a novel filament winding approach that leverages an embedded bent timber frame towards a synergetic hybrid material system. Thin timber is applied as an architectural surface, for load distribution, and as a frame in fabrication, while wound Carbon Fiber-Polymer Composite (FPC) acts as the primary structural element.
The Hybrid-Active Winding process involves bending the timber winding frame, winding the FPC syntax with a relaxed application, and then releasing the bent timber so that the timber opens until a reciprocal equilibrium is achieved where the fibers constrain the timber bend while the bent timber tensions the fiber layup during curing.
System Design
Demonstrators
Two demonstrators were produced to verify the feasibility of the fabrication strategy and test the capacity of the hybrid modules in arched and cantilevered configuration.
Demonstrator Fabrication
The demonstrators were fabricated using a dual-robot Fiber Platform at the University of Stuttgart Large-Scale Construction Robotics Laboratory (LCRL).
Simulations
Structural Benchmarking
Three specimins were benchmarked with 4-point bending: an all timber specimin, an all fiber specimin, and a hybrid specimin. The results show that the hybrid acheives nearly 80% of the Fmax of the pure fiber specimin while using only 30% of carbon FPC by weight.
