engleski

Stress analysis of an industry hall's deep beam

The stress and strain analysis for a complexly-shaped deep beam to be used in an industrial hall building was conducted theoretically, through finite element method, and experimentally, by deep beam model testing in laboratory. The laboratory tested model of a deep beam was made of a medium density fibreboard (MDF) plate, 38 mm in thickness. Mechanical characteristics of the medium density fibreboard were determined by laboratory testing of fibreboard specimens. During the deep beam model testing in laboratory, characteristic cross sections were subjected to strain measurements by means of resistance strain gauges, while inductive strain gauges were used for measuring displacements. In the course of laboratory testing, the load applied on the deep beam model was gradually increased in four phases. The relaxation of load between individual loading phases, was followed by an increased application of load. After results obtained by model testing in laboratory were analyzed and compared with those obtained by the finite element method, it was established that a good correspondence of results was obtained during the stress and strain analysis of deep beams.

deep beam; stress; strain; strain gauges; finite element method (FEM); mechanical properties of medium density fibreboard

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