Jernej Klemenc (Avtor), Gorazd Fajdiga (Avtor)

Povzetek

When wood is used as a structural material, the fact that it is a highly inhomogeneous material, which significantly affects its static and fatigue properties, presents a major challenge to engineers. In this paper, a novel approach to modelling the fatigue-life properties of wood is presented. In the model, the common inverse-power-law relationship between the structural amplitude loads and the corresponding number of load cycles to failure is augmented with the influence of the wood’s mass density, the loading direction and the processing lot. The model is based on the two-parametric conditional Weibull’s probability density function with a constant shape parameter and a scale parameter that is a function of the previously mentioned parameters. The proposed approach was validated using the example of experimental static and fatigue-strength data from spruce beams. It turned out that the newly presented model is capable of adequately replicating the spruce’s S-N curves with a scatter, despite the relatively scarce amount of experimental data, which came from different production lots that were loaded in different directions and had a significant variation in density. Based on the experimental data, the statistical model predicts that the lower density wood has better fatigue strength.

Ključne besede

smrekovina;gostota lesa;statične lastnosti materiala;dinamična trdnost;Weibullova gostota porazdelitve verjetnosti;razširjeni inverzni potenčni zakon;spruce wood;wood density;static material characteristics;fatigue strength;Weibull’s probability density function;augmented inverse power law;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL BF - Biotehniška fakulteta
UDK: 630*8
COBISS: 93092867 Povezava se bo odprla v novem oknu
ISSN: 1996-1944
Št. ogledov: 201
Št. prenosov: 69
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: smrekovina;gostota lesa;statične lastnosti materiala;dinamična trdnost;Weibullova gostota porazdelitve verjetnosti;razširjeni inverzni potenčni zakon;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 1-15
Letnik: ǂVol. ǂ15
Zvezek: ǂiss. ǂ2
Čas izdaje: 2022
DOI: 10.3390/ma15020536
ID: 14271465