Constitutive model for timber fracture under tension and shear

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F13%3A00206784" target="_blank" >RIV/68407700:21110/13:00206784 - isvavai.cz</a>

Výsledek na webu

<a href="http://mech.fsv.cvut.cz/cfrac/proceedings.pdf" target="_blank" >http://mech.fsv.cvut.cz/cfrac/proceedings.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Constitutive model for timber fracture under tension and shear

Popis výsledku v původním jazyce

In this contribution we present a two-dimensional constitutive model for timber fracturing under tensile and shear loads. The model captures the following phenomena: (1) elastic and inelastic behavior in small deformation range, (2) material orthotropy,both in linear and non-linear range, (3) cracking across and along fibers, (4) behavior under unloading/reloading. The model can be applied both to hardwood and softwood by selecting appropriate material characteristics. We idealize timber as a homogeneous quasi-brittle material. Prior to cracking, the material is characterized by elastic orthotropic stress-strain relationship. An orthotropic fracture criterion, which can distinguish between crack forming across or along fibers is proposed. Post-cracking response is treated by means of the fixed smeared crack model.

Název v anglickém jazyce

Constitutive model for timber fracture under tension and shear

Popis výsledku anglicky

In this contribution we present a two-dimensional constitutive model for timber fracturing under tensile and shear loads. The model captures the following phenomena: (1) elastic and inelastic behavior in small deformation range, (2) material orthotropy,both in linear and non-linear range, (3) cracking across and along fibers, (4) behavior under unloading/reloading. The model can be applied both to hardwood and softwood by selecting appropriate material characteristics. We idealize timber as a homogeneous quasi-brittle material. Prior to cracking, the material is characterized by elastic orthotropic stress-strain relationship. An orthotropic fracture criterion, which can distinguish between crack forming across or along fibers is proposed. Post-cracking response is treated by means of the fixed smeared crack model.

Druh

O - Ostatní výsledky

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

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