500 research outputs found
Testing and Defining a Complex Design Through Digital and Physical Models
No full textThis article presents the methodology employed in an application of shape optimisation and digital fabrication in the domain of double-curved wooden furniture design. The study offers a comprehensive definition of the various models, both digital and physical, that facilitate the creative process and their contribution to the design and experimentation process. The process is not solely focused on defining the optimal form; it also represents and simulates the interplay between the stylistic requirements of the designed form and the technical needs of the constructed form.
The integration of these models enables the delineation of the design project, thereby reducing the discrepancy between design and construction through the incorporation of digital simulation and physical verification. The theoretical assumptions and the methodology applied for the discretisation of the form, as well as the proposed algorithmic procedure, are discussed and presented for reproducibility.
The methodology was successfully applied to the furnishing of the lounge bar and restaurant area of the Oasis Skyview hotel in Doha (Qatar), a project which required the engineering of almost 26,000 wooden laths, identified by unique codes for installation on site
Testing and Defining a Complex Design Through Digital and Physical Models
No full textThis paper presents the methodology adopted in an application of shape optimisation and digital fabrication conducted in the field of wooden furniture design. Experience has allowed the authors to define the models that support the creative process, identifying their respective peculiarities and their contribution to the design process as a process of experimentation, which takes place between digital and physical, not only defining the form of the idea but also correctly representing the tested model and its use, and allowing a dialogue between the stylistic requirements of the designed shape and the technical needs of the built one. The phases of the methodology are applied to the project of furnishing the lounge bar and restaurant area of the Oasis Skyview hotel in Doha (Qatar). The coordinated dialogue between the different models allows the definition of the design project, creating a workflow that significantly reduces the distance between the project and construction
Massive wood design – Dalla forma complessa a una costruzione efficiente
No full textIl rapporto tra forma complessa ed efficienza realizzativa
è sempre più importante alla luce del notevole sviluppo delle
tecniche di fabbricazione digitale. La modellazione algoritmica
ha assunto un ruolo centrale poiché riesce a soddisfare
tanto le necessità estetiche quanto quelle produttive.The relationship between complex form and manufacturing
efficiency is increasingly important in light of the remarkable
development of digital manufacturing techniques. Algorithmic
modelling has assumed a central role as it is able to satisfy both
aesthetic and production needs
Fast methods for shape reconstruction in Electrical Resistance Tomography
No full textElectrical Resistance Tomography (ERT) is a body of methods and techniques aimed to reconstruct the spatial distribution of the conductivity of a material starting from the knowledge of boundary measurements such as, for instance, the Neumann-to-Dirichlet map. This inverse problem is ill-posed and nonlinear and, therefore, its solution require a considerable computational effort. In this paper we present a comparison between three fast non-iterative reconstruction methods for locating inclusions in an otherwise homogeneous material (for both 2D and 3D geometries). These methods, potentially, are candidate for real-time applications. (C) 2011 Elsevier Ltd. All rights reserved
Massive wood design: dalla forma complessa a una costruzione efficiente
No full textIl rapporto tra forma complessa ed efficienza realizzativa è sempre più importante alla luce del notevole sviluppo delle tecniche di fabbricazione digitale.
La modellazione algoritmica ha assunto un ruolo centrale poiché riesce soddisfare tanto le necessità estetiche quanto quelle produttive.The relationship between complex form and manufacturing efficiency is
increasingly important in light of the remarkable development of digital manufacturing techniques. Algorithmic modelling has assumed a central
role as it is able to satisfy both aesthetic and production needs
Size is in the Eye of the Beholder: Technique for Non-destructive Detection of Parameterized Defects
No full textThe paper presents a technique to compute magneto-quasi-static nondestructive testing problems with parameterized frequency and defect geometry. A single mesh is used for computations within a range of parameters, and the metric variations due to parameter variations are taken into account in the numerical values of the material parameters
Non-iterative imaging method for experimental data inversion in eddy current tomography
No full textIn eddy current tomography the conductivity profile of conductive materials is reconstructed through the inversion of eddy current data (ECT). The state of the art of imaging methods in ECT data inversion is represented by iterative methods, the drawbacks of which are their high computational cost and the risk of becoming trapped in false solutions (local minima). In this paper we propose the 'monotonicity imaging method', a fast non-iterative algorithm recently developed by the authors for elliptic problems (such as electrical resistance tomography) and then extended to parabolic problems (such as eddy current tomography). For the first time we experimentally validate the monotonicity imaging method and demonstrate that the inversion can be obtained in real time and without resorting to any direct solver. (C) 2011 Elsevier Ltd. All rights reserved
Non-Iterative Imaging Method for Electrical Resistance Tomography
No full textElectrical Resistance Tomography (ERT) is a body of methods and techniques aimed to reconstruct the spatial distribution of the resistivity of a material starting from the knowledge of boundary measurements such as, for instance, the Neumann-to-Dirichlet map. This inverse problem is ill-posed and nonlinear and, therefore, its solution require a considerable computational effort. In this paper we discuss a fast non-iterative reconstruction method for locating inclusions in an otherwise homogeneous material. This method, potentially, is a candidate for near real-time applications
Non-Iterative Imaging Methods for Electrical Resistance Tomography: comparison between two fast methods
No full textComputation of end-winding inductances of rotating electrical machinery through three-dimensional magnetostatic integral FEM formulation
No full textPurpose - The paper aims to illustrate a numerical technique to calculate fields and inductances of rotating electrical machines. Design/methodology/ approach - The technique is based on an integral formulation of the nonlinear magnetostatic model in terms of the unknown magnetization. The solution is obtained by means of a Picard-Banach iteration whose convergence can be theoretically proved. Findings - The proposed method has been used to build a model of a large turbine generator. In particular, the influence of end effects on flux linkages has been computed. It has been demonstrated that the 2D solution underestimates the flux linkages as well as the no load voltage of 2 per cent, while the leakage fluxes are computed by the 2D solution with errors as high as 20 per cent. Originality/value - The method is advantageous in comparison to standard methods
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