On the use of finite element method and LEFM to assess bearing capacity of historic notched timber beams at arbitrary location

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F24%3A00575141" target="_blank" >RIV/68378297:_____/24:00575141 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/978-3-031-39450-8_21" target="_blank" >https://doi.org/10.1007/978-3-031-39450-8_21</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-031-39450-8_21" target="_blank" >10.1007/978-3-031-39450-8_21</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On the use of finite element method and LEFM to assess bearing capacity of historic notched timber beams at arbitrary location

Popis výsledku v původním jazyce

As notched beams are often and commonly found in historic structures, the assessment of potential bearing capacity is of utmost importance. In practice a few equations are found in the standards dealing with the problem, nevertheless, common use is only on tension side near the ends of the beams. To fill the gap and also allow for computing the critical force of arbitrary notched beam under arbitrary loads the authors use energy-based approach along with FEM. The idea is based on simple virtual crack closure technique and calculation of the work consumed by the crack to grow. Such a method is able to assess the bearing capacity of the whole beam. This procedure allows for a detailed analysis of the problem in real structure. The method described above is documented in the paper and a numerical model is constructed in ANSYS. The assessed values are compared to experimental work on real timber beams. Experimental work consisted of testing 9 beams (softwood, Norway spruce) with dimensions 0.2 × 0.25 × 5.9 m, a cut in the central part of the beam and 4-point bending load scenario. The numerical analysis is able to assess the critical load relatively well. Results are critically evaluated and drawbacks are discussed in-depth.

Název v anglickém jazyce

On the use of finite element method and LEFM to assess bearing capacity of historic notched timber beams at arbitrary location

Popis výsledku anglicky

As notched beams are often and commonly found in historic structures, the assessment of potential bearing capacity is of utmost importance. In practice a few equations are found in the standards dealing with the problem, nevertheless, common use is only on tension side near the ends of the beams. To fill the gap and also allow for computing the critical force of arbitrary notched beam under arbitrary loads the authors use energy-based approach along with FEM. The idea is based on simple virtual crack closure technique and calculation of the work consumed by the crack to grow. Such a method is able to assess the bearing capacity of the whole beam. This procedure allows for a detailed analysis of the problem in real structure. The method described above is documented in the paper and a numerical model is constructed in ANSYS. The assessed values are compared to experimental work on real timber beams. Experimental work consisted of testing 9 beams (softwood, Norway spruce) with dimensions 0.2 × 0.25 × 5.9 m, a cut in the central part of the beam and 4-point bending load scenario. The numerical analysis is able to assess the critical load relatively well. Results are critically evaluated and drawbacks are discussed in-depth.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/GA21-29389S" target="_blank" >GA21-29389S: Experimentální a numerický odhad únosnosti zářezu v nosnících z konstrukčního dřeva v obecném místě pomocí LEFM</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Structural analysis of historical constructions. SAHC 2023

ISBN

978-3-031-39449-2

ISSN

2211-0844

e-ISSN

2211-0852

Počet stran výsledku

9

Strana od-do

259-267

Název nakladatele

Springer

Místo vydání

Cham

Místo konání akce

Kyoto

Datum konání akce

11. 9. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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