Joseph Gattas

A nonlinear beam-spring-beam element for modelling the flexural behaviour of a timber-concrete sandwich panel with a cellular core

Publisher: Elsevier BV

Date: 10-2021

DOI: 10.1016/J.ENGSTRUCT.2021.112785

Compliant curved-crease origami-inspired metamaterials with a programmable force-displacement response

Publisher: Elsevier BV

Date: 09-2021

DOI: 10.1016/J.MATDES.2021.109859

Computational Design and Experimental Behaviour of Deployable Mass Timber Arches

Publisher: International Association for Shell and Spatial Structures

Date: 03-2019

DOI: 10.20898/J.IASS.2019.199.030

Folded hybrid FRP-timber sections: concept, geometric design and experimental behaviour

Publisher: Elsevier BV

Date: 2018

DOI: 10.1016/J.TWS.2017.10.007

Folded assembly methods for thin-walled steel structures

Publisher: Elsevier BV

Date: 11-2017

DOI: 10.1016/J.JCSR.2017.07.010

Experimental study on the effects of scale on the static and dynamic behaviour of Glulam and hybrid-Glulam beams

Publisher: Elsevier BV

Date: 03-2023

DOI: 10.1016/J.CONBUILDMAT.2023.130563

Structural behaviour of folded timber sandwich structures

Publisher: Elsevier BV

Date: 12-2021

DOI: 10.1016/J.TWS.2021.108345

Structural Behavior of Digitally Fabricated Thin-Walled Timber Columns

Publisher: World Scientific Pub Co Pte Ltd

Date: 10-2019

DOI: 10.1142/S0219455419501268

Abstract: This paper aims to investigate the structural behavior of digitally fabricated thin-walled timber sections with edge connectivity provided by integral mechanical press-fit joints. Experimental, numerical, and analytical investigations have been developed to accurately characterize the press-fit section behavior and their failure modes. Plywood fiber orientation, material thickness, and connection tightness are considered as potential factors that may affect the performance of the press-fit jointing system. Experimental testing of square hollow sections (SHSs) under uniaxial compressive loading showed failure of sections through both conventional crushing and novel pop-off bifurcation failures. Pop-off buckling behaviors were shown to be governed by the integral joint transverse stiffness and its magnitude relative to a critical edge stiffness value. Columns with joint transverse stiffness value less than the critical edge stiffness value exhibited pop-off failures. These joint stiffness values were obtained from testing of unloaded joints and were used to obtain accurate predictions of column failure modes. Joint stiffness values for loaded joints were then predicted with an interpolation model mapping axial strain to a tighter connection tolerance and these were used to obtain accurate estimations for column failure load in most of the tested column types. Comparative investigations showed thin-walled sections with integral joints only to be capable of matching the compressive capacities of glued sections, for instances where crushing governed. Similarly, the weight-specific compressive capacity of timber sections was found to be comparable to thin-walled steel sections when crushing governs.

Experimental investigation of a novel concrete-timber floor panel system with digitally fabricated FRP-timber hollow core component

Publisher: Elsevier BV

Date: 12-2019

DOI: 10.1016/J.CONBUILDMAT.2019.08.048

A parametric design framework for timber framing span tables

Publisher: Informa UK Limited

Date: 26-06-2023

DOI: 10.1080/14488353.2023.2227432

Computational design and digital fabrication of folded timber sandwich structures

Publisher: Elsevier BV

Date: 06-2019

DOI: 10.1016/J.AUTCON.2019.01.008

Hybrid fibre-reinforced polymer–timber thin-walled structural members

Publisher: SAGE Publications

Date: 15-12-2017

DOI: 10.1177/1369433217739709

Abstract: The increasing interest in timber as a sustainable construction material has led to the development of a new type of structures referred to as ‘hybrid fibre-reinforced polymer–timber thin-walled structures’. In these structures, thin layers of fibre-reinforced polymer are combined with timber veneers to create high-performance, lightweight and easy-to-construct structural members. This new type of structural members harnesses the orthotropic properties of both timber and fibre-reinforced polymer by appropriately orientating material fibre directions for optimal composite properties as well as efficient thin-walled cross-sectional shapes. Hybrid fibre-reinforced polymer–timber thin-walled members can be used in many applications such as load-bearing walls, roofs, floor panels and bridge decks. This article describes several novel hybrid fibre-reinforced polymer–timber structural member forms and presents results from a preliminary experimental investigation into the compressive behaviour of hybrid fibre-reinforced polymer–timber wall panels. A comparison of behaviour between a hybrid fibre-reinforced polymer–timber wall panel and a pure timber wall panel is presented to show that the hybrid fibre-reinforced polymer–timber system significantly outperforms the pure timber system in terms of both load resistance and axial strain at failure.

Discovery Early Career Researcher Award - Grant ID: DE160100289

Start Date: 2016

End Date: 02-2019

Amount: $375,000.00

Funder: Australian Research Council

Industrial Transformation Research Hubs - Grant ID: IH150100030

Start Date: 12-2016

End Date: 03-2022

Amount: $1,577,087.00

Funder: Australian Research Council

Discovery Projects - Grant ID: DP160103279

Start Date: 2016

End Date: 11-2019

Amount: $390,000.00

Funder: Australian Research Council

Industrial Transformation Research Hubs - Grant ID: IH220100016

Start Date: 10-2023

End Date: 10-2028

Amount: $2,959,803.00

Funder: Australian Research Council