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Your search keyword '"Matteo Vettori"' showing total 3 results
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3 results on '"Matteo Vettori"'

1. ADDITIVE MANUFACTURING PROCESS PARAMETER INFLUENCE ON MECHANICAL STRENGTH OF ADHESIVE JOINTS, PRELIMINARY ACTIVITIES

Author

Mattia Frascio, Lorenzo Bergonzi, Michal Jilich, Fabrizio Moroni, Massimiliano Avalle, Alessandro Pirondi, Margherita Monti, and Matteo Vettori

Subjects
additivemanufacturing, fusedfilamentfabrication, bondedjoints, surfacecharacterization, Engineering (General). Civil engineering (General), TA1-2040
Abstract

The work illustrates how building parameters of the Additive Manufacturing process Fused Filament Fabrication can affect not only the mechanical properties but also the surface wettability and morphology. Wettability and morphology are relevant factors in bonded joints performance. Advantages of polymeric additive manufacturing are to allow a re-design of components with locally controlled properties and integrated functions. Major limitations are related to the lack of material testing standardization and constraints due to the build volume and to the object orientation for printability: the latter problem scan be addressed with the use of bonded joints that allow to create bigger assemblies from smaller parts optimally designed to take advantage of material orthotropy and without the structural drawbacks. In this study, two materials are considered, acrylonitrile butadiene styrene and polylactideacid. Wettability, surface morphology and mechanical strength have been determined at different combinations of nozzle temperature, print speed and layer thickness.

Published
2019
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2. Proposal for an equivalent frame model for the analysis of multi-storey monolithic CLT shearwalls

Author

Daniele Casagrande, Ghasan Doudak, Riccardo Fanti, and Matteo Vettori

Subjects
Distribution (mathematics), business.industry, Frame (networking), Vertical load, Lintel, Structural engineering, Parapet, business, Internal forces, Finite element method, Civil and Structural Engineering, Mathematics
Abstract

The paper presents a simple yet robust frame model to be used as an alternative to continuous 2D or 3D finite element models for the purpose of analyzing multi-storey cross-laminated timber (CLT) shearwalls with openings when subjected to lateral loads. The proposed model is applicable to monolithic CLT walls and takes into account the mechanical interaction between wall segments and lintel/parapet elements as well as the non-linear behaviour of the mechanical anchors, while the contribution of the vertical load is omitted. Pushover numerical analyses were conducted on the proposed equivalent frame model (EFM) and 2-D finite element model, and the results showed good agreement between the two models along the entire force-displacement curves. The failure conditions were found to be consistent in all cases, and the distribution of the internal forces were found to be reasonable. The proposed EFM was also compared with published test results on CLT shearwalls and the fit was deemed reasonable, with a slight tendency to underestimating the ultimate capacity of the shearwalls.

Published
2021
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