Data processing of wave propagation in viscoelastic split Hopkinson pressure bar
In this study, the polymethyl methacrylate (PMMA) bar was taken as an example to study the data processing of the viscoelastic Split Hopkinson pressure bar (SHPB) during shock wave propagation. First, SHPB tests of the PMMA bar were conducted, and the strain data measured at the position of the stra...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2022-04-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0083888 |
| _version_ | 1817986852710252544 |
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| author | Jiangping Chen Weijun Tao Shi Huan Chong Xu |
| author_facet | Jiangping Chen Weijun Tao Shi Huan Chong Xu |
| author_sort | Jiangping Chen |
| collection | DOAJ |
| description | In this study, the polymethyl methacrylate (PMMA) bar was taken as an example to study the data processing of the viscoelastic Split Hopkinson pressure bar (SHPB) during shock wave propagation. First, SHPB tests of the PMMA bar were conducted, and the strain data measured at the position of the strain gauges on the viscoelastic PMMA bar were processed by using the improved Lagrange analysis method (LAM) to obtain the full-field strain, particle velocity, and stress data. Then, the Zhu–Wang–Tang dynamic viscoelastic constitutive model was adopted, and the parameters were calibrated to determine the dynamic constitutive equation of the PMMA bar. By combining the characteristics method and the dynamic constitutive equation, numerical simulation was conducted to obtain the physical quantity data at each point on the PMMA bar, so as to realize the closed-loop test. By comparing the data obtained by the improved LAM with the data obtained by the characteristics method, it was found that the improved LAM can improve the calculation accuracy at the later loading stage and was more consistent with the actual situation, and the validity of data processing and the applicability of the dynamic constitutive equation at the early loading stage were verified as well. The improved LAM can be extended to the propagation calculation of the attenuation wave in SHPB tests of soft materials or low density materials. |
| first_indexed | 2024-04-14T00:14:35Z |
| format | Article |
| id | doaj.art-d6e75645ed8645b4a9477263481e8c08 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-14T00:14:35Z |
| publishDate | 2022-04-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-d6e75645ed8645b4a9477263481e8c082022-12-22T02:23:10ZengAIP Publishing LLCAIP Advances2158-32262022-04-01124045210045210-910.1063/5.0083888Data processing of wave propagation in viscoelastic split Hopkinson pressure barJiangping Chen0Weijun Tao1Shi Huan2Chong Xu3School of Civil Engineering and Architecture, Guangzhou City Construction College, Guangzhou 510925, ChinaKey Laboratory of Earthquake Engineering and Control, Earthquake Engineering Research and Test Center, Guangzhou University, Guangzhou 510405, ChinaDepartment of Advanced Remote Sensing Technology, Jihua Laboratory, Foshan 528000, ChinaDepartment of Advanced Remote Sensing Technology, Jihua Laboratory, Foshan 528000, ChinaIn this study, the polymethyl methacrylate (PMMA) bar was taken as an example to study the data processing of the viscoelastic Split Hopkinson pressure bar (SHPB) during shock wave propagation. First, SHPB tests of the PMMA bar were conducted, and the strain data measured at the position of the strain gauges on the viscoelastic PMMA bar were processed by using the improved Lagrange analysis method (LAM) to obtain the full-field strain, particle velocity, and stress data. Then, the Zhu–Wang–Tang dynamic viscoelastic constitutive model was adopted, and the parameters were calibrated to determine the dynamic constitutive equation of the PMMA bar. By combining the characteristics method and the dynamic constitutive equation, numerical simulation was conducted to obtain the physical quantity data at each point on the PMMA bar, so as to realize the closed-loop test. By comparing the data obtained by the improved LAM with the data obtained by the characteristics method, it was found that the improved LAM can improve the calculation accuracy at the later loading stage and was more consistent with the actual situation, and the validity of data processing and the applicability of the dynamic constitutive equation at the early loading stage were verified as well. The improved LAM can be extended to the propagation calculation of the attenuation wave in SHPB tests of soft materials or low density materials.http://dx.doi.org/10.1063/5.0083888 |
| spellingShingle | Jiangping Chen Weijun Tao Shi Huan Chong Xu Data processing of wave propagation in viscoelastic split Hopkinson pressure bar AIP Advances |
| title | Data processing of wave propagation in viscoelastic split Hopkinson pressure bar |
| title_full | Data processing of wave propagation in viscoelastic split Hopkinson pressure bar |
| title_fullStr | Data processing of wave propagation in viscoelastic split Hopkinson pressure bar |
| title_full_unstemmed | Data processing of wave propagation in viscoelastic split Hopkinson pressure bar |
| title_short | Data processing of wave propagation in viscoelastic split Hopkinson pressure bar |
| title_sort | data processing of wave propagation in viscoelastic split hopkinson pressure bar |
| url | http://dx.doi.org/10.1063/5.0083888 |
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