Influence of hygrothermal effects in the fracture process in wood under creep loading

Angellier, Nicolas; Dubois, Frédéric; Pitti, Rostand Moutou; Diakhaté, Malick; Loko, Raoul Spero Adjovi

doi:10.1016/j.engfracmech.2017.04.009

Cited by 12 publications

(5 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wood is defined as a material whose the mechanical behavior in structure depending on the fluctuation of its internal moisture content [1][2]. It is also known that the internal changes of humidity, coupling with long term loading bring in many times, the initiation and the propagation of cracks, which are directly an impact on the total deflection measured on the wood until its collapse [3][4].…”

Section: Context and Problematicmentioning

confidence: 99%

“…In outdoor conditions wood is submitting to the effects of moisture content, in this case and by taking into account this hypothesis, it seems necessary to bring a correction on the compliance given by equation (2). By starting from the Fick law, for an unidirectional diffusion, a correction is done on the expression of moisture content w of the NB tested.…”

Section: Taking Into Account Of the Moisture Content (W) Effectmentioning

confidence: 99%

See 1 more Smart Citation

Analytical Assessment of Creep Behavior of European Species in Outdoor Conditions

Nziengui

Pitti

Gril

et al. 2021

Challenges in Mechanics of Time Dependent Materials, Volume 2

Self Cite

View full text Add to dashboard Cite

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

show abstract

Section: Context and Problematicmentioning

confidence: 99%

Section: Taking Into Account Of the Moisture Content (W) Effectmentioning

confidence: 99%

Analytical Assessment of Creep Behavior of European Species in Outdoor Conditions

Nziengui

Pitti

Gril

et al. 2021

Challenges in Mechanics of Time Dependent Materials, Volume 2

Self Cite

View full text Add to dashboard Cite

show abstract

“…Kaboorani et al [13] used a dynamic thermomechanical analyser (DMA) to measure the radial and tangential creep compliance of maple timber under different conditions, and the results showed that the creep compliance increased with increasing equilibrium moisture content. Angellier et al [14] investigated the hygrothermal effect on the crack change during the creep process of timber. Moosavi et al [15] analysed the influence of altitude on the flexural creep properties of Carpinus.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Creep Behaviour of Glulam Compression-Bending Members

Yin¹,

Qu²,

Lu³

et al. 2022

Journal of Renewable Materials

View full text Add to dashboard Cite

Creep test results of glulam members under compression and bending were studied in this paper. The creep tests were conducted to investigate the influence of the stress level and relative eccentricity on the creep deformation of glulam members. The test results showed that the creep deformation trends of glulam members under long-term compression and bending loading were similar; the creep deformation increased with increases in both the stress level and relative eccentricity. However, the relative creep deformation decreased with the increase in both the stress level and relative eccentricity under long-term loading, and a five-parameter creep model was proposed to analyse the creep mechanism of glulam members under compression and bending. The good fitness of the test results indicated that the five-parameter model was able to accurately simulate the creep deformation of glulam compression-bending members. Moreover, a numerical model was developed using the creep equation, which was related to the parameter a and b. The simulation results were in good agreement with the test results, and the parameters a and b were correlated to the relative eccentricity and stress level, respectively. Based on the corrected parameters a and b, the relative creep deformation of glulam compression-bending members was predicted over 50 years.

show abstract

“…The use of wood in construction requires the mastery of several physical and mechanical mechanisms that can be limiting factors for timber structures at short or long term. Indeed, the hygroscopic behavior of wood, characterized by sorption, expansion and diffusion processes, sometimes causes crack initiation [3] and propagation and ultimately structural failure [4]. The necessity to solve these problems led to several experimental [5]; analytical [6], [7] or numerical [8] approaches.…”

Section: Introductionmentioning

confidence: 99%

Notched-beam creep of Douglas fir and white fir in outdoor conditions: Experimental study

Nziengui

Pitti

Fournely

et al. 2019

Construction and Building Materials

Self Cite

View full text Add to dashboard Cite

The impact of variations of relative humidity, temperature and moisture content on the creep of notched beams of Douglas fir and white fir are investigated. Indoor static 4-points bending tests are followed by outdoor creep tests of notched beams designed to trigger the breakage mode associated with the use of notched ends. The dimensions of wood specimens follow Eurocode requirements. The maximum load applied to outdoor creep tests is derived from the failure load obtained during indoor instantaneous tests. The results show that the variations of the relative humidity and temperature, coupled with the loading, play a key role in the lifetime of timber, as they accelerate its aging. In addition, the link between the changes of climatic parameters and the damage of the beams and the limit of their lifetime as structure is shown.

show abstract

Influence of hygrothermal effects in the fracture process in wood under creep loading

Cited by 12 publications

References 19 publications

Analytical Assessment of Creep Behavior of European Species in Outdoor Conditions

Analytical Assessment of Creep Behavior of European Species in Outdoor Conditions

Experimental Investigation of the Creep Behaviour of Glulam Compression-Bending Members

Notched-beam creep of Douglas fir and white fir in outdoor conditions: Experimental study

Contact Info

Product

Resources

About