High-strain-rate mechanical response of HTPE propellant under SHPB impact loading
The high-strain-rate dynamic response of a hydroxyl-terminated polyether (HTPE) propellant during impact loading is essential for assessing the structural reliability and impact safety of HTPE propellant. In this study, a modified split Hopkinson pressure bar (SHPB) apparatus has been developed to r...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2021-03-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0046785 |
| _version_ | 1819052366714896384 |
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| author | Heng-ning Zhang Hai Chang Jun-qiang Li Xiao-jiang Li Han Wang |
| author_facet | Heng-ning Zhang Hai Chang Jun-qiang Li Xiao-jiang Li Han Wang |
| author_sort | Heng-ning Zhang |
| collection | DOAJ |
| description | The high-strain-rate dynamic response of a hydroxyl-terminated polyether (HTPE) propellant during impact loading is essential for assessing the structural reliability and impact safety of HTPE propellant. In this study, a modified split Hopkinson pressure bar (SHPB) apparatus has been developed to research the stress–strain behavior of the HTPE propellant over strain rates ranging from 470 to 5910 s−1 at room temperature, and the validity of the SHPB test is analyzed in detail. Meanwhile, the evolution of deformation to failure of the HTPE propellant was recorded by a high-speed digital camera synchronized with the SHPB test, which revealed the correlation between mechanical response and failure mode. Scanning electron microscopy was applied to investigate the microscopic failure mechanism of the post-test HTPE propellant, which indicated two characteristic failure modes: cracking propagates along the (1) debonding surface and (2) transgranular damage path. Finally, based on the stress–strain plots derived from the SHPB tests, the ultimate stress, strain energy density, and adiabatic temperature-rise effect of the HTPE propellant were seen to show strong strain rate dependence by following an empirical power law function. |
| first_indexed | 2024-12-21T12:18:42Z |
| format | Article |
| id | doaj.art-aef0c8185d2b45219a9cd2ca87b3bf25 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-21T12:18:42Z |
| publishDate | 2021-03-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-aef0c8185d2b45219a9cd2ca87b3bf252022-12-21T19:04:23ZengAIP Publishing LLCAIP Advances2158-32262021-03-01113035145035145-710.1063/5.0046785High-strain-rate mechanical response of HTPE propellant under SHPB impact loadingHeng-ning Zhang0Hai Chang1Jun-qiang Li2Xiao-jiang Li3Han Wang4Xi’an Modern Chemistry Research Institute, Xi’an, Shaanxi 710065, ChinaXi’an Modern Chemistry Research Institute, Xi’an, Shaanxi 710065, ChinaXi’an Modern Chemistry Research Institute, Xi’an, Shaanxi 710065, ChinaXi’an Modern Chemistry Research Institute, Xi’an, Shaanxi 710065, ChinaXi’an Modern Chemistry Research Institute, Xi’an, Shaanxi 710065, ChinaThe high-strain-rate dynamic response of a hydroxyl-terminated polyether (HTPE) propellant during impact loading is essential for assessing the structural reliability and impact safety of HTPE propellant. In this study, a modified split Hopkinson pressure bar (SHPB) apparatus has been developed to research the stress–strain behavior of the HTPE propellant over strain rates ranging from 470 to 5910 s−1 at room temperature, and the validity of the SHPB test is analyzed in detail. Meanwhile, the evolution of deformation to failure of the HTPE propellant was recorded by a high-speed digital camera synchronized with the SHPB test, which revealed the correlation between mechanical response and failure mode. Scanning electron microscopy was applied to investigate the microscopic failure mechanism of the post-test HTPE propellant, which indicated two characteristic failure modes: cracking propagates along the (1) debonding surface and (2) transgranular damage path. Finally, based on the stress–strain plots derived from the SHPB tests, the ultimate stress, strain energy density, and adiabatic temperature-rise effect of the HTPE propellant were seen to show strong strain rate dependence by following an empirical power law function.http://dx.doi.org/10.1063/5.0046785 |
| spellingShingle | Heng-ning Zhang Hai Chang Jun-qiang Li Xiao-jiang Li Han Wang High-strain-rate mechanical response of HTPE propellant under SHPB impact loading AIP Advances |
| title | High-strain-rate mechanical response of HTPE propellant under SHPB impact loading |
| title_full | High-strain-rate mechanical response of HTPE propellant under SHPB impact loading |
| title_fullStr | High-strain-rate mechanical response of HTPE propellant under SHPB impact loading |
| title_full_unstemmed | High-strain-rate mechanical response of HTPE propellant under SHPB impact loading |
| title_short | High-strain-rate mechanical response of HTPE propellant under SHPB impact loading |
| title_sort | high strain rate mechanical response of htpe propellant under shpb impact loading |
| url | http://dx.doi.org/10.1063/5.0046785 |
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