Detailing joints are important when designing structures. In this design process, a structure is divided into different joint types. Digital fabrication and algorithmic aided design have changed the conceptions and requirements of joint detailing. However, parametric tools that can efficiently identify joint types based on the solution space are not available. This article presents a methodology that efficiently generates topological relations and enables the user to assign joint instances to joint types. A series of property-based search criteria components is applied to define the solution space of a joint type. Valid joints are coherently filtered, deconstructed and outputted for detailing. The article explains both the methodology and programming-related aspects of the joint type filtering. The article concludes that the developed methodology offers the desired flexibility and may be suitable for other materials and applications.
The methodology and design methods are often neglected and not discussed as indicators for the popularization of circular design. In this paper, which is part of ongoing research, we propose a design strategy and method for designing a building from reclaimed wooden elements, based on the actual building project case study in Oslo. The design method is a plugin for the Algorithms-Aided Design environment integrated with the database of available reclaimed elements. The plugin is based on algorithms suggesting suitable elements from the database in real-time. This helps the designer in tedious selection processes. Used in the concept and engineering phase of the building process, it can save time and rationalize design choices. The optimization objective is the structural performance and environmental impact of the final structure.
<p>Digital workflows are already widely used by the designers (architects and engineers) in creating a better Building Information Modelling (BIM) data flow. In the core of this design method is a para- metric model, which thanks to open source software can be easily customized according to the pro- ject or user needs. Shell or gridshell structures are very sensitive on the external loads, due to the low weight and big span. The accuracy and reliability are therefore a crucial point in design. More and more architects are using parametrical models, based on visual programing (like Grasshopper or Dynamo) to develop form of spatial structure. The parametric model in shell design gives a high precision in creating BIM model and is the starting point for the structural analysis. In this paper we will present a design method, in which the parametric model is not only the starting point for struc- tural analysis. Thanks to a well-established digital workflow it can occur, that structural analysis is made simultaneously with architectural form finding of the shell. The digital workflow, developed by our research group is based on the Finite Element Method (FEM). The design methodology is to create two kind of structural analyses. The first one, called global, is using beam elements to inves- tigate the general forces and deformations. The second one, called local, is using solid/volume ele- ments to investigate the connection solution. Thanks to fast information transfer between this two analysis and automation of this process, the architect can achieve information about feasibility of the whole designed structure in real time. To validate our approach the timber gridshell was de- signed. The structure with nontrivial shape and customized each of the 61 nodes, was build in 2016 in Trondheim. The nodes were manufactured with usage of the 3D printing technology.</p>
<p>This paper focuses on the development of form finding as a part of a parametric designing toolkit, which aims to make the designing process much more efficient. A special interest is placed on the form finding methods, which have been developed since 1960. In the current paper are several existing approaches compared and evaluated. Well-known methods such as the force density method, dynamic relaxation, thrust network analysis and more resent ones , like genetic algorithm approach are presented and compared on the simple 2D example and 3D shell. Both the mathematical structures as well as the physical basis of the suggested methods are shown. Finally, it is shown how each method approaches the initial equilibrium problem for different boundary conditions and how those methods can be adopted in parametric modelling framework.</p>
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