Strain-rate correlation of biaxial tension and compression mechanical properties of HTPB and NEPE propellants
An effective biaxial tension and compression test method is proposed based on the shortcomings of current research for the mechanical properties of solid propellants under complex stress states. The equal proportion biaxial tension and compression test of HTPB (Hydroxyl-terminated polybutadiene) and...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2022-05-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0083205 |
| _version_ | 1817975409738776576 |
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| author | Qizhou Wang Guang Wang Zhejun Wang Hongfu Qiang Xueren Wang Shudi Pei |
| author_facet | Qizhou Wang Guang Wang Zhejun Wang Hongfu Qiang Xueren Wang Shudi Pei |
| author_sort | Qizhou Wang |
| collection | DOAJ |
| description | An effective biaxial tension and compression test method is proposed based on the shortcomings of current research for the mechanical properties of solid propellants under complex stress states. The equal proportion biaxial tension and compression test of HTPB (Hydroxyl-terminated polybutadiene) and NEPE (NitrateEster Plasticized Polyether) solid propellants is performed at different rates while at room temperature, and the damage morphology of the tension–compression zone is analyzed using micro-CT. The results show that the failure mode of the solid propellant under biaxial tension and compression loading is similar to that under uniaxial tension. Meanwhile, the compressive strength is much greater than the tensile strength, which will eventually cause tensile failure. With an increased loading rate, the growth trend of the initial modulus, ultimate strength, and maximum elongation of the propellant is gradually flattened, and the damage degree is gradually reduced. Additionally, damage that forms in the HTPB propellant is from dewetting and particle fracture while that for the NEPE propellant is from matrix tearing. The porosity can be used as the meso-damage parameter of the propellant. |
| first_indexed | 2024-04-13T21:49:36Z |
| format | Article |
| id | doaj.art-0019315d23884448bbb74df42ccb2f53 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-13T21:49:36Z |
| publishDate | 2022-05-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-0019315d23884448bbb74df42ccb2f532022-12-22T02:28:27ZengAIP Publishing LLCAIP Advances2158-32262022-05-01125055005055005-1110.1063/5.0083205Strain-rate correlation of biaxial tension and compression mechanical properties of HTPB and NEPE propellantsQizhou Wang0Guang Wang1Zhejun Wang2Hongfu Qiang3Xueren Wang4Shudi Pei5PLA Rocket Force University of Engineering, Xi’an, Shaanxi Province, ChinaPLA Rocket Force University of Engineering, Xi’an, Shaanxi Province, ChinaXi’an Research Institute of High Technology, Xi’an, Shaanxi Province, ChinaXi’an Research Institute of High Technology, Xi’an, Shaanxi Province, ChinaPLA Rocket Force University of Engineering, Xi’an, Shaanxi Province, ChinaPLA Rocket Force University of Engineering, Xi’an, Shaanxi Province, ChinaAn effective biaxial tension and compression test method is proposed based on the shortcomings of current research for the mechanical properties of solid propellants under complex stress states. The equal proportion biaxial tension and compression test of HTPB (Hydroxyl-terminated polybutadiene) and NEPE (NitrateEster Plasticized Polyether) solid propellants is performed at different rates while at room temperature, and the damage morphology of the tension–compression zone is analyzed using micro-CT. The results show that the failure mode of the solid propellant under biaxial tension and compression loading is similar to that under uniaxial tension. Meanwhile, the compressive strength is much greater than the tensile strength, which will eventually cause tensile failure. With an increased loading rate, the growth trend of the initial modulus, ultimate strength, and maximum elongation of the propellant is gradually flattened, and the damage degree is gradually reduced. Additionally, damage that forms in the HTPB propellant is from dewetting and particle fracture while that for the NEPE propellant is from matrix tearing. The porosity can be used as the meso-damage parameter of the propellant.http://dx.doi.org/10.1063/5.0083205 |
| spellingShingle | Qizhou Wang Guang Wang Zhejun Wang Hongfu Qiang Xueren Wang Shudi Pei Strain-rate correlation of biaxial tension and compression mechanical properties of HTPB and NEPE propellants AIP Advances |
| title | Strain-rate correlation of biaxial tension and compression mechanical properties of HTPB and NEPE propellants |
| title_full | Strain-rate correlation of biaxial tension and compression mechanical properties of HTPB and NEPE propellants |
| title_fullStr | Strain-rate correlation of biaxial tension and compression mechanical properties of HTPB and NEPE propellants |
| title_full_unstemmed | Strain-rate correlation of biaxial tension and compression mechanical properties of HTPB and NEPE propellants |
| title_short | Strain-rate correlation of biaxial tension and compression mechanical properties of HTPB and NEPE propellants |
| title_sort | strain rate correlation of biaxial tension and compression mechanical properties of htpb and nepe propellants |
| url | http://dx.doi.org/10.1063/5.0083205 |
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