Abstract
AbstractPredicting the performance of building materials, products and structures can be carried out from the standpoint of a thermofluctuation concept of destruction and deformation of solids. According to the concept, the decisive role in the destruction and deformation of solids belongs to the thermal movement of kinetic units. To make the forecast, it is necessary to determine the thermal fluctuation constants included in the generalized Zhurkov equation on the basis of experimentally obtained data on the dependence of durability on temperature and voltage. The given paper presents experimental data on the determination of thermal fluctuation constants for built-up section wooden beams without special ties. The height of built-up elements is different. The obtained thermofluctuation constants have been compared with the previously obtained constants for solid section and built-up section wooden elements. The height of the elements is the same.KeywordsWooden beamsGeneralized Zhurkov equationPrediction of durabilityBuilt-up sectionThermofluctuation concept
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