Effects of seismic strain rates on the perpendicular-to-grain compression behaviour of Dahurian larch, Mongolian pine and Chinese poplar: tests and stress-strain model
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Lipeng Zhang
,
Yajie Wu
Abstract
Wood is mainly subjected to transverse compression in many critical parts of Chinese traditional timber structures, e.g. the mortise-tenon and Dou-Gong joints. Seismic is one of the dynamic actions faced by these structures and will cause wood to suffer higher loading speeds than quasi-static loads. The investigation of the seismic strain rates (SSRs) effects of wood under perpendicular-to-grain compression (PTGc) is important. One hundred and forty-four radial small clear wood specimens were prepared using Dahurian larch, Mongolian pine and Chinese poplar. Monotonic and cyclic compression tests were conducted under three SSRs (10−3 s−1, 10−2 s−1, and 10−1 s−1) and the quasi-static strain rate (10−4 s−1). Failure modes, stress-strain curves, yield strengths, elastic moduli and the unloading/reloading moduli were analyzed. Results indicated that the PTGc properties were highly sensitive to SSRs under both the monotonic and cyclic compression. Strengths showed higher sensitivity to SSRs than elastic moduli. The SSRs effects of wood under cyclic compression have greater variability than the monotonic counterparts. The unloading/reloading moduli shows little SSR effects statistically. Comparisons were made between the existing PTG and the parallel-to-grain test results and a fitted general expression was obtained. Furthermore, an SSR-dependent stress-strain model was proposed and verified by tests.
Funding source: the Education Department Project of Shaanxi Provincial Government
Award Identifier / Grant number: 17JS063
Funding source: the Shaanxi Natural Science Basic Research Program
Award Identifier / Grant number: 2021JC-44
Award Identifier / Grant number: 2023JC-QN-0409
Award Identifier / Grant number: 2023-GHZD-03
Funding source: the National Natural Science Foundation of China
Award Identifier / Grant number: 52178303
Funding source: the 2023 R&D Program from XAUAT Engineering Technology Co., LTD
Award Identifier / Grant number: XAJD-YF23N015
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: The authors gratefully acknowledge the funding support received from the National Natural Science Foundation of China (grant no. 52178303), the Shaanxi Natural Science Basic Research Program (nos. 2021JC-44, 2023JC-QN-0409 and 2023-GHZD-03), the Education Department Project of Shaanxi Provincial Government (no. 17JS063) and the 2023 R&D Program from XAUAT Engineering Technology Co., LTD (no. XAJD-YF23N015).
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Conflict of interest statement: The authors declare that they have no conflicts of interest regarding this article.
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© 2023 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Wood Physics/Mechanical Properties
- Effects of seismic strain rates on the perpendicular-to-grain compression behaviour of Dahurian larch, Mongolian pine and Chinese poplar: tests and stress-strain model
- The effect of the growth ring orientation on spring-back and set-recovery in surface-densified wood
- Synergistic improvement to dimensional stability of Populus cathay ana via hemicellulose removal/alkali lignin impregnation
- Adding gaseous ammonia with heat treatment to improve the mechanical properties of spruce wood
- Wood as a hydrothermally stimulated shape-memory material: mechanisms of shape-memory effect and molecular assembly structure networks
- Wood Chemistry
- Structural comparison of different isolated eucalyptus lignins and analysis of their interaction mechanism with bovine serum albumin solution under QCM-D
- Role of α-Fe2O3 nano-particles in protecting wood from ultraviolet light degradation
- Wood Science – Non-Tree Plants
- Radial distribution of vascular bundle morphology in Chinese bamboos: machine learning methodology for rapid sampling and classification
Articles in the same Issue
- Frontmatter
- Wood Physics/Mechanical Properties
- Effects of seismic strain rates on the perpendicular-to-grain compression behaviour of Dahurian larch, Mongolian pine and Chinese poplar: tests and stress-strain model
- The effect of the growth ring orientation on spring-back and set-recovery in surface-densified wood
- Synergistic improvement to dimensional stability of Populus cathay ana via hemicellulose removal/alkali lignin impregnation
- Adding gaseous ammonia with heat treatment to improve the mechanical properties of spruce wood
- Wood as a hydrothermally stimulated shape-memory material: mechanisms of shape-memory effect and molecular assembly structure networks
- Wood Chemistry
- Structural comparison of different isolated eucalyptus lignins and analysis of their interaction mechanism with bovine serum albumin solution under QCM-D
- Role of α-Fe2O3 nano-particles in protecting wood from ultraviolet light degradation
- Wood Science – Non-Tree Plants
- Radial distribution of vascular bundle morphology in Chinese bamboos: machine learning methodology for rapid sampling and classification
