Avaliação mecânica de mola helicoidal de tração aplicada na articulação de ninhos automáticos para perus

Abstract

Helical extension springs are widely used in machines and structures, playing a crucial role in energy absorption and motion control. This study aimed to analyze the mechanical behavior of helical springs applied to the articulation of automated turkey nests through experiments, numerical analyses, analytical methods, and finite element analysis. Four samples were subjected to tensile tests, metallographic analyses, and microhardness tests to characterize the material and assess structural performance. The spring material was likely identified as ASTM A229 steel, as indicated by analytical calculations and experimental results. Computational simulations reproduced the spring?s behavior, highlighting stress concentration regions, particularly on the inner coil surfaces, which were not captured by simplified analytical methods. Additionally, modifications to the spring geometry, without altering the elastic constant parameters, demonstrated that increasing the wire diameter significantly improves safety factors, albeit with higher production costs. The combination of experimental, analytical, and numerical methods proved essential for understanding spring performance, enabling geometric optimizations that enhance structural safety while maintaining equipment functionality and ensuring animal welfare. [resumo fornecido pelo autor]