Random impact force localisation enabled by the weighted reference database method
Abstract The mechanical properties of an engineering structure can be substantially influenced by a random impact force (RIF), which may compromise the integrity and safety of the structure. Nevertheless, accurately localising the RIF applied to a structure presents a significant challenge. To addre...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-12-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-83812-7 |
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| author | Binbin Qiu Siqi Liu Weidong Li Chunhua Feng Yu Zhu Haoran Liu |
| author_facet | Binbin Qiu Siqi Liu Weidong Li Chunhua Feng Yu Zhu Haoran Liu |
| author_sort | Binbin Qiu |
| collection | DOAJ |
| description | Abstract The mechanical properties of an engineering structure can be substantially influenced by a random impact force (RIF), which may compromise the integrity and safety of the structure. Nevertheless, accurately localising the RIF applied to a structure presents a significant challenge. To address this issue, this study introduces a novel method known as the weighted reference database method (WRDM). Its innovations are reflected in three aspects: (i) constrained by the sparse construction of a reference database, bicubic interpolation is utilised to increase the reference impact point density and improve the localisation accuracy; (ii) a weighted random impact localisation framework is constructed, in which a cosine distance variant is chosen as the weight to further improve the localisation accuracy; and (iii) to overcome the region limitation of interpolation, the boundary range of the WRDM is extended. Experiments on a suspended rectangular plate were conducted to validate and demonstrate the effectiveness of the WRDM in terms of localisation accuracy. The experimental results indicate that the average absolute error of the method is 16.67 mm (the interpolation interval size is 2 mm and the prioritisation point number (PPN) is 108), and its localisation accuracy is higher than that of previously published methods (21.54 mm for PRMCSM; 20.80 mm for the hybrid method). |
| format | Article |
| id | doaj-art-eb8ffdd82bc04b88ac0d4ffb83b97801 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-eb8ffdd82bc04b88ac0d4ffb83b978012025-01-05T12:27:21ZengNature PortfolioScientific Reports2045-23222024-12-0114111910.1038/s41598-024-83812-7Random impact force localisation enabled by the weighted reference database methodBinbin Qiu0Siqi Liu1Weidong Li2Chunhua Feng3Yu Zhu4Haoran Liu5School of Mechanical Engineering, University of Shanghai for Science and TechnologySchool of Mechanical Engineering, University of Shanghai for Science and TechnologySchool of Mechanical Engineering, University of Shanghai for Science and TechnologySchool of Mechanical Engineering, University of Shanghai for Science and TechnologySchool of Mechanical Engineering, University of Shanghai for Science and TechnologyMarine Design and Research Institute of ChinaAbstract The mechanical properties of an engineering structure can be substantially influenced by a random impact force (RIF), which may compromise the integrity and safety of the structure. Nevertheless, accurately localising the RIF applied to a structure presents a significant challenge. To address this issue, this study introduces a novel method known as the weighted reference database method (WRDM). Its innovations are reflected in three aspects: (i) constrained by the sparse construction of a reference database, bicubic interpolation is utilised to increase the reference impact point density and improve the localisation accuracy; (ii) a weighted random impact localisation framework is constructed, in which a cosine distance variant is chosen as the weight to further improve the localisation accuracy; and (iii) to overcome the region limitation of interpolation, the boundary range of the WRDM is extended. Experiments on a suspended rectangular plate were conducted to validate and demonstrate the effectiveness of the WRDM in terms of localisation accuracy. The experimental results indicate that the average absolute error of the method is 16.67 mm (the interpolation interval size is 2 mm and the prioritisation point number (PPN) is 108), and its localisation accuracy is higher than that of previously published methods (21.54 mm for PRMCSM; 20.80 mm for the hybrid method).https://doi.org/10.1038/s41598-024-83812-7Impact localisationReference database methodBicubic interpolationWeighted model |
| spellingShingle | Binbin Qiu Siqi Liu Weidong Li Chunhua Feng Yu Zhu Haoran Liu Random impact force localisation enabled by the weighted reference database method Scientific Reports Impact localisation Reference database method Bicubic interpolation Weighted model |
| title | Random impact force localisation enabled by the weighted reference database method |
| title_full | Random impact force localisation enabled by the weighted reference database method |
| title_fullStr | Random impact force localisation enabled by the weighted reference database method |
| title_full_unstemmed | Random impact force localisation enabled by the weighted reference database method |
| title_short | Random impact force localisation enabled by the weighted reference database method |
| title_sort | random impact force localisation enabled by the weighted reference database method |
| topic | Impact localisation Reference database method Bicubic interpolation Weighted model |
| url | https://doi.org/10.1038/s41598-024-83812-7 |
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