Prediction Model of Shrinkage Crack Propagation in Cross-Section of Timber Components
Shrinkage cracks severely affect the safety of wood structures. Therefore, the moisture stress distribution of shrinkage cracks should be analyzed, and the interface crack depth of wood components predicted. In this paper, the equilibrium conditions, physical conditions, geometric conditions, and co...
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| Format: | Article |
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MDPI AG
2023-10-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/10/2505 |
| _version_ | 1797574454705913856 |
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| author | Panpan Tian Hongxing Qiu Jianhong Han Hongmin Li Xia Han |
| author_facet | Panpan Tian Hongxing Qiu Jianhong Han Hongmin Li Xia Han |
| author_sort | Panpan Tian |
| collection | DOAJ |
| description | Shrinkage cracks severely affect the safety of wood structures. Therefore, the moisture stress distribution of shrinkage cracks should be analyzed, and the interface crack depth of wood components predicted. In this paper, the equilibrium conditions, physical conditions, geometric conditions, and coordination equations of the disk humidity stress under a moisture content gradient Δ<i>w</i> are deduced by referring to the elastic analytical solution model of temperature stress. Moreover, the humidity stress distribution equation is established, which is verified via the finite element method. The critical water content and shrinkage crack depth prediction models are further deduced based on the humidity stress distribution. The usability of the model is further verified using the test data of actual engineered wood components. The results demonstrate that the moisture stress is not determined by the initial moisture content <i>W<sub>i</sub></i>, equilibrium moisture content <i>W</i><sub>e</sub>, or member size but by moisture content gradient Δ<i>w</i>. The shrinkage crack prediction model of wood components in cross-section can be applied to actual engineering prediction to provide a theoretical basis for the reinforcement measures and safety evaluation of wood structures. |
| first_indexed | 2024-03-10T21:22:48Z |
| format | Article |
| id | doaj.art-af96beedd2fa4d16ada7e0b8ad2a52fe |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-10T21:22:48Z |
| publishDate | 2023-10-01 |
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| series | Buildings |
| spelling | doaj.art-af96beedd2fa4d16ada7e0b8ad2a52fe2023-11-19T15:55:19ZengMDPI AGBuildings2075-53092023-10-011310250510.3390/buildings13102505Prediction Model of Shrinkage Crack Propagation in Cross-Section of Timber ComponentsPanpan Tian0Hongxing Qiu1Jianhong Han2Hongmin Li3Xia Han4School of Civil Engineering and Architecture, Xinjiang University, Urumqi 830047, ChinaKey Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, School of Civil Engineering, Southeast University, Nanjing 211189, ChinaSchool of Civil Engineering, Xinjiang Institute of Engineering, Urumqi 830023, ChinaCollege of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, ChinaSchool of Civil Engineering and Architecture, Xinjiang University, Urumqi 830047, ChinaShrinkage cracks severely affect the safety of wood structures. Therefore, the moisture stress distribution of shrinkage cracks should be analyzed, and the interface crack depth of wood components predicted. In this paper, the equilibrium conditions, physical conditions, geometric conditions, and coordination equations of the disk humidity stress under a moisture content gradient Δ<i>w</i> are deduced by referring to the elastic analytical solution model of temperature stress. Moreover, the humidity stress distribution equation is established, which is verified via the finite element method. The critical water content and shrinkage crack depth prediction models are further deduced based on the humidity stress distribution. The usability of the model is further verified using the test data of actual engineered wood components. The results demonstrate that the moisture stress is not determined by the initial moisture content <i>W<sub>i</sub></i>, equilibrium moisture content <i>W</i><sub>e</sub>, or member size but by moisture content gradient Δ<i>w</i>. The shrinkage crack prediction model of wood components in cross-section can be applied to actual engineering prediction to provide a theoretical basis for the reinforcement measures and safety evaluation of wood structures.https://www.mdpi.com/2075-5309/13/10/2505wood componentsmoisture content gradienthumidity stress distributionshrinkage crack depthdetection |
| spellingShingle | Panpan Tian Hongxing Qiu Jianhong Han Hongmin Li Xia Han Prediction Model of Shrinkage Crack Propagation in Cross-Section of Timber Components Buildings wood components moisture content gradient humidity stress distribution shrinkage crack depth detection |
| title | Prediction Model of Shrinkage Crack Propagation in Cross-Section of Timber Components |
| title_full | Prediction Model of Shrinkage Crack Propagation in Cross-Section of Timber Components |
| title_fullStr | Prediction Model of Shrinkage Crack Propagation in Cross-Section of Timber Components |
| title_full_unstemmed | Prediction Model of Shrinkage Crack Propagation in Cross-Section of Timber Components |
| title_short | Prediction Model of Shrinkage Crack Propagation in Cross-Section of Timber Components |
| title_sort | prediction model of shrinkage crack propagation in cross section of timber components |
| topic | wood components moisture content gradient humidity stress distribution shrinkage crack depth detection |
| url | https://www.mdpi.com/2075-5309/13/10/2505 |
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