Constitutive Model of N15 Propellant considering the Confining Pressure Effect
To describe the effect of confining pressure on the mechanical responses of N15 propellant, a constitutive model considering the confining pressure effect was first established for N15 propellant based on the elastic-viscoelastic correspondence principle. Then, the mechanical properties of N15 solid...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/2661184 |
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| author | Tianpeng Li Junli Han Shixin Wang Yong He Xiong Chen Bang Lu |
| author_facet | Tianpeng Li Junli Han Shixin Wang Yong He Xiong Chen Bang Lu |
| author_sort | Tianpeng Li |
| collection | DOAJ |
| description | To describe the effect of confining pressure on the mechanical responses of N15 propellant, a constitutive model considering the confining pressure effect was first established for N15 propellant based on the elastic-viscoelastic correspondence principle. Then, the mechanical properties of N15 solid propellant under different confining pressures were obtained using confining pressure test system, and the obtained results indicate that the initial modulus of propellant did not change with confining pressure, but the maximum tensile strength, rupture strength, the maximum elongation, and elongation at break increased with increasing confining pressure. In conjunction with propellants’ mesoscopic structure and cross-section analysis, the mechanical mechanism of confining pressure effect on propellant was initially disclosed. Due to confining pressure, the particle dewetting inside the propellant was reduced, the hole propagation was delayed, and crack extension inhibited germination, proving that confining pressure has a strengthening impact on the propellant. Finally, assuming that the model parameters were dependent on pressure, the model parameters acquisition and validation were conducted. The results demonstrated that constitutive model can describe confining pressure influence on the mechanical properties of N15 propellant accurately. |
| format | Article |
| id | doaj-art-2fe984e4f10942c89c4f07a4636f026d |
| institution | OA Journals |
| issn | 1687-5974 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-2fe984e4f10942c89c4f07a4636f026d2025-08-20T02:07:56ZengWileyInternational Journal of Aerospace Engineering1687-59742021-01-01202110.1155/2021/2661184Constitutive Model of N15 Propellant considering the Confining Pressure EffectTianpeng Li0Junli Han1Shixin Wang2Yong He3Xiong Chen4Bang Lu5Nanjing University of Science and TechnologyNanjing University of Science and TechnologyThe 713 Research Institute of CSICNanjing University of Science and TechnologyNanjing University of Science and TechnologyArmy Engineering University of PLATo describe the effect of confining pressure on the mechanical responses of N15 propellant, a constitutive model considering the confining pressure effect was first established for N15 propellant based on the elastic-viscoelastic correspondence principle. Then, the mechanical properties of N15 solid propellant under different confining pressures were obtained using confining pressure test system, and the obtained results indicate that the initial modulus of propellant did not change with confining pressure, but the maximum tensile strength, rupture strength, the maximum elongation, and elongation at break increased with increasing confining pressure. In conjunction with propellants’ mesoscopic structure and cross-section analysis, the mechanical mechanism of confining pressure effect on propellant was initially disclosed. Due to confining pressure, the particle dewetting inside the propellant was reduced, the hole propagation was delayed, and crack extension inhibited germination, proving that confining pressure has a strengthening impact on the propellant. Finally, assuming that the model parameters were dependent on pressure, the model parameters acquisition and validation were conducted. The results demonstrated that constitutive model can describe confining pressure influence on the mechanical properties of N15 propellant accurately.http://dx.doi.org/10.1155/2021/2661184 |
| spellingShingle | Tianpeng Li Junli Han Shixin Wang Yong He Xiong Chen Bang Lu Constitutive Model of N15 Propellant considering the Confining Pressure Effect International Journal of Aerospace Engineering |
| title | Constitutive Model of N15 Propellant considering the Confining Pressure Effect |
| title_full | Constitutive Model of N15 Propellant considering the Confining Pressure Effect |
| title_fullStr | Constitutive Model of N15 Propellant considering the Confining Pressure Effect |
| title_full_unstemmed | Constitutive Model of N15 Propellant considering the Confining Pressure Effect |
| title_short | Constitutive Model of N15 Propellant considering the Confining Pressure Effect |
| title_sort | constitutive model of n15 propellant considering the confining pressure effect |
| url | http://dx.doi.org/10.1155/2021/2661184 |
| work_keys_str_mv | AT tianpengli constitutivemodelofn15propellantconsideringtheconfiningpressureeffect AT junlihan constitutivemodelofn15propellantconsideringtheconfiningpressureeffect AT shixinwang constitutivemodelofn15propellantconsideringtheconfiningpressureeffect AT yonghe constitutivemodelofn15propellantconsideringtheconfiningpressureeffect AT xiongchen constitutivemodelofn15propellantconsideringtheconfiningpressureeffect AT banglu constitutivemodelofn15propellantconsideringtheconfiningpressureeffect |