An Inelastic Theoretical Model regarding the Load-Carrying Capacity of PSL Bending Component
Parallel strand lumber (PSL) is an attractive structural wood composite which may have prospective use in building constructions. Conducting nonlinear analysis for the bending of PSL beams is a critical step in the determination of ultimate strength and deflection of them, which is an essential requ...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/6677450 |
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| _version_ | 1832565921122615296 |
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| author | Baolu Sheng Yuling Bian Dong He Aiping Zhou |
| author_facet | Baolu Sheng Yuling Bian Dong He Aiping Zhou |
| author_sort | Baolu Sheng |
| collection | DOAJ |
| description | Parallel strand lumber (PSL) is an attractive structural wood composite which may have prospective use in building constructions. Conducting nonlinear analysis for the bending of PSL beams is a critical step in the determination of ultimate strength and deflection of them, which is an essential requirement of the building design philosophy based on probability of ultimate state. For the purposes of this article, an inelastic theoretical model regarding the load-carrying capacity of the PSL bending component has been developed. Based on the uniaxial loading tests, the stress-strain behaviors of PSL composite in the grain direction were measured. 4-point bending experiments were also performed in this study to investigate the failure mechanism of the PSL components. The results show that the tensile stress-strain relationship of PSL materials in the grain direction remains linear until breaking, while the compressive stress-strain relationship exhibits nonlinear characteristics once the compressive stress exceeds the proportional limit, which can be expressed by a quadratic polynomial. The failure mode of the PSL beam can be summarized that the fibres in the top of the broken section were buckling and those in the bottom of the section were broken when failure occurred. Significant nonlinear behavior was exhibited based on the load-deflection curves of the PSL beams. To predict the nonlinear bending performance of the PSL beams, a theoretical model that could consider the nonlinear stress-strain relations of PSL and predict the damage modes of the PSL beams was developed. Well agreements can be observed between the results of calculations and experiments. |
| format | Article |
| id | doaj-art-4c7c18cb57004907ad0ccf039173473b |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-4c7c18cb57004907ad0ccf039173473b2025-02-03T01:05:30ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/66774506677450An Inelastic Theoretical Model regarding the Load-Carrying Capacity of PSL Bending ComponentBaolu Sheng0Yuling Bian1Dong He2Aiping Zhou3National Engineering Research Center of Biomaterials, Nanjing Forestry University, 159 Longpan Rd., Nanjing 210037, ChinaWuxi Vocational Institute of Commerce, 809 Qianhu Rd., Wuxi 214153, ChinaDongfang Turbine Co.,Ltd., 666 Jinshajiang Rd., Deyang City, Sichuan Province 618000, ChinaNational Engineering Research Center of Biomaterials, Nanjing Forestry University, 159 Longpan Rd., Nanjing 210037, ChinaParallel strand lumber (PSL) is an attractive structural wood composite which may have prospective use in building constructions. Conducting nonlinear analysis for the bending of PSL beams is a critical step in the determination of ultimate strength and deflection of them, which is an essential requirement of the building design philosophy based on probability of ultimate state. For the purposes of this article, an inelastic theoretical model regarding the load-carrying capacity of the PSL bending component has been developed. Based on the uniaxial loading tests, the stress-strain behaviors of PSL composite in the grain direction were measured. 4-point bending experiments were also performed in this study to investigate the failure mechanism of the PSL components. The results show that the tensile stress-strain relationship of PSL materials in the grain direction remains linear until breaking, while the compressive stress-strain relationship exhibits nonlinear characteristics once the compressive stress exceeds the proportional limit, which can be expressed by a quadratic polynomial. The failure mode of the PSL beam can be summarized that the fibres in the top of the broken section were buckling and those in the bottom of the section were broken when failure occurred. Significant nonlinear behavior was exhibited based on the load-deflection curves of the PSL beams. To predict the nonlinear bending performance of the PSL beams, a theoretical model that could consider the nonlinear stress-strain relations of PSL and predict the damage modes of the PSL beams was developed. Well agreements can be observed between the results of calculations and experiments.http://dx.doi.org/10.1155/2021/6677450 |
| spellingShingle | Baolu Sheng Yuling Bian Dong He Aiping Zhou An Inelastic Theoretical Model regarding the Load-Carrying Capacity of PSL Bending Component Advances in Civil Engineering |
| title | An Inelastic Theoretical Model regarding the Load-Carrying Capacity of PSL Bending Component |
| title_full | An Inelastic Theoretical Model regarding the Load-Carrying Capacity of PSL Bending Component |
| title_fullStr | An Inelastic Theoretical Model regarding the Load-Carrying Capacity of PSL Bending Component |
| title_full_unstemmed | An Inelastic Theoretical Model regarding the Load-Carrying Capacity of PSL Bending Component |
| title_short | An Inelastic Theoretical Model regarding the Load-Carrying Capacity of PSL Bending Component |
| title_sort | inelastic theoretical model regarding the load carrying capacity of psl bending component |
| url | http://dx.doi.org/10.1155/2021/6677450 |
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