3D design and impelementation of simulations before the prototype realization: Importance of circular economy input elements

In this paper, numerical simulation within the circular economy framework was discussed. The numerical simulation of an electronics enclosure was considered in two cases. The first case referred to the FEM analysis of the enclosure behavior under a uniform load applied to the cover and to the connection between the cover and the central part. The condition of the case when it hits a hard surface, as well as its behavior after a fall, were analyzed. The second direction concerned the application of the Slicer software platform. Here, the printing parameters were defined, and all preparations were made before the prototype was realized. So, during design and after simulations, the designer can adjust the model's dimensions or redesign the existing product. This paper describes the strategy that designers should apply in the realization of the redesigned product. Numerical simulations as an input element of CE reduce the risk of failed prototypes, and their importance is reflected in the rapid prototyping without loss of material or consumption of other resources, reliable analysis of prototypes, identification of critical zones, and the possibility of recycling planning. For the complete analysis and certification of the product, experimental tests should be conducted, as well as the use of recycled materials.