Material parameters of European spruce for tensile–shear fracture modeling

In this work, we present the results from an experimental campaign on solid and glued laminated timber made of European spruce (Picea abies) with 10.5mm or 45mm thick lamellas. We conducted off-axis tension and compression tests, shear block test, and compact tension test. The main purpose of the st...

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Bibliographic Details
Published in:Engineering structures 2022-11, Vol.270, p.114534, Article 114534
Main Authors: Šmídová, Eliška, Kabele, Petr, Šejnoha, Michal
Format: Article
Language:English
Subjects:
Calibration
Compact tension
Compact tension test
Complexity
Compression
Compression tests
Elastic modulus
Fracture energy
Glued-laminated timber
Mathematical models
Nonlinear response
Off-axis compression test
Off-axis tension test
Parameters
Poisson’s ratio
Shear
Shear test
Solid timber
Strength
Tension
Tension tests
Three-point bending test
Traction–separation relation
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Summary:In this work, we present the results from an experimental campaign on solid and glued laminated timber made of European spruce (Picea abies) with 10.5mm or 45mm thick lamellas. We conducted off-axis tension and compression tests, shear block test, and compact tension test. The main purpose of the study was to obtain a consistent set of material parameters suitable for the calibration of a material model capable of capturing complex timber behavior, i.e. both linear and non-linear response together with respective fracture pattern, under various combinations of tension, shear, and compression. Elastic parameters and strengths parallel and perpendicular to the grain were retrieved from off-axis tension and compression tests. The traction–separation relation and fracture energy for the crack parallel to the grain was obtained by inverse analysis of compact tension test. The results capture the complexity of timber fracture and provide data for numerical simulations. •Experimental study carried out on European spruce specimens.•Tests interpreted in a simplified transverse isotropy (2D orthotropy).•Elastic parameters and strengths retrieved from off-axis tension and compression tests.•Traction–separation relation obtained by inverse analysis of compact tension test.•Complexity of timber fracture was captured providing data for numerical simulations.
ISSN:0141-0296
1873-7323
DOI:10.1016/j.engstruct.2022.114534