Currently, the design standards provide the friction coefficients for softwoods, but there is a lack of specific values for hardwoods. However, these coefficients are necessary for the numerical simulation of joints and supports as well as for the calculation of structures where friction is involved, such as tension plates. Thus, this research work aims to determine the static and dynamic friction coefficients of Spanish chestnut wood (Castanea Sativa “Mill.”). As in previous works, the authors assessed the 12% moisture content, which corresponds to Service Class I, the experiments for this investigation were carried out at a moisture content of 18%. This higher moisture content is common in Service Class II, which refers to wood exposed to the weather but covered, a common occurrence in wooden structures. Moreover, different orthotropic orientations both for timber-to-timber and timber-to-steel were also considered. The results highlight the influence of the moisture content on the coefficient values, which increase with higher moisture percentages. Additionally, it was found a modification in the sliding behavior compared to the standard 12% moisture content.

Comunicación presentada en el XII Congreso Ibérico de Agroingeniería celebrado en Sevilla entre el 4 y el 6 de septiembre de 2023.

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