ECCOMAS 2024

Numerical Study of the Mechanical and Creep Behaviour of a Sustainable Modular System for Hydroponics

  • Sousa, Bruno (PIEP - Innovation in Polymer Engineering)
  • Antunes, Joel (PIEP - Innovation in Polymer Engineering)
  • Gomes, André (PIEP - Innovation in Polymer Engineering)
  • Carneiro, Filipa (PIEP - Innovation in Polymer Engineering)

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Hydroponics has become a very interesting option regarding the replacement of traditional farming solutions. Despite its eco-friendly character, some challenges remain across the whole lifecycle of the involved products, such as the use of more sustainable materials and processes during production, optimization of the structures, and lifetime extension with these materials [1, 2]. Following worldwide concerns about sustainability, this work is engaged in studying, producing, testing, and placing on the market a new/more eco-friendly system for hydroponics which, when compared to the one currently produced with metallic materials (i.e. aluminium, steel with zinc coating, iron, etc.). Polymeric materials (e.g. ABS, PVC, HDPE, etc.) are the most promising ones to give answer to develop a lightweight modular hydroponic system with higher recyclability and performance [3, 4]. So, this work identifies and selects the most promising polymeric materials and additives that are more sustainable/suitable for hydroponic cultivation, considering the weather conditions, compatibility with the food to be used in the system, durability, and recyclability at the end of its life. It also be stand out that the creep phenom has a high impact in ductile materials during the lifespan of the system. So, to ensure all these requirements, the numerical simulations study through Abaqus was performed to evaluate the mechanical and creep behaviours, of the propose system with PVC. Based on the obtained results, of this study it was possible to verify the selected material could be a good sustainable alternative for modular systems for hydroponics, allowing also the development of a new design of practical and ergonomic solutions for assembling and maintaining these systems in an agile, comfortable, and safe way. Future works are foreseen to support the implementation of more circular solutions, which can also contribute to reducing the EU footprint and the integration of more sustainable materials in the hydroponics systems.