The Numerical Simulation Method of the Slot Crack Groups’ Effect Analysis for Solid Rocket Motor Grain
This study is aimed at the stability and effect of the crack groups in the solid rocket motor (SRM) grain when it was launched at normal temperature. Based on the nearly incompressible viscoelastic finite element method, several cracks were preset in a critical location along with the dangerous poin...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/6394749 |
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| author | Tianpeng Li Xiaonan Li Zhaolong Xuan Yu Guo |
| author_facet | Tianpeng Li Xiaonan Li Zhaolong Xuan Yu Guo |
| author_sort | Tianpeng Li |
| collection | DOAJ |
| description | This study is aimed at the stability and effect of the crack groups in the solid rocket motor (SRM) grain when it was launched at normal temperature. Based on the nearly incompressible viscoelastic finite element method, several cracks were preset in a critical location along with the dangerous point of the back slot. The singular crack elements at the tips of crack groups were established to calculate the J-integral. With the position of the cracks, the J-integral of the various crack tips was, respectively, calculated to prejudge its stability and the group effect. Finally, the experimental measured critical J-integral JIC was compared with the numerical simulation result. The results showed that in the collinear crack groups, the enhancement effect of the main crack was caused by the nearest second crack, and the significant shielding effect of the main crack was occurred in the noncollinear crack groups. Moreover, the experimental result showed that the numerical method had high accuracy. |
| format | Article |
| id | doaj-art-172d8839396546cf9b8ed531d70fb9dd |
| institution | Kabale University |
| issn | 1687-5974 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-172d8839396546cf9b8ed531d70fb9dd2025-02-03T06:13:03ZengWileyInternational Journal of Aerospace Engineering1687-59742022-01-01202210.1155/2022/6394749The Numerical Simulation Method of the Slot Crack Groups’ Effect Analysis for Solid Rocket Motor GrainTianpeng Li0Xiaonan Li1Zhaolong Xuan2Yu Guo3Shijiazhuang CampusShijiazhuang CampusShijiazhuang CampusCollege of Aerospace Science and EngineeringThis study is aimed at the stability and effect of the crack groups in the solid rocket motor (SRM) grain when it was launched at normal temperature. Based on the nearly incompressible viscoelastic finite element method, several cracks were preset in a critical location along with the dangerous point of the back slot. The singular crack elements at the tips of crack groups were established to calculate the J-integral. With the position of the cracks, the J-integral of the various crack tips was, respectively, calculated to prejudge its stability and the group effect. Finally, the experimental measured critical J-integral JIC was compared with the numerical simulation result. The results showed that in the collinear crack groups, the enhancement effect of the main crack was caused by the nearest second crack, and the significant shielding effect of the main crack was occurred in the noncollinear crack groups. Moreover, the experimental result showed that the numerical method had high accuracy.http://dx.doi.org/10.1155/2022/6394749 |
| spellingShingle | Tianpeng Li Xiaonan Li Zhaolong Xuan Yu Guo The Numerical Simulation Method of the Slot Crack Groups’ Effect Analysis for Solid Rocket Motor Grain International Journal of Aerospace Engineering |
| title | The Numerical Simulation Method of the Slot Crack Groups’ Effect Analysis for Solid Rocket Motor Grain |
| title_full | The Numerical Simulation Method of the Slot Crack Groups’ Effect Analysis for Solid Rocket Motor Grain |
| title_fullStr | The Numerical Simulation Method of the Slot Crack Groups’ Effect Analysis for Solid Rocket Motor Grain |
| title_full_unstemmed | The Numerical Simulation Method of the Slot Crack Groups’ Effect Analysis for Solid Rocket Motor Grain |
| title_short | The Numerical Simulation Method of the Slot Crack Groups’ Effect Analysis for Solid Rocket Motor Grain |
| title_sort | numerical simulation method of the slot crack groups effect analysis for solid rocket motor grain |
| url | http://dx.doi.org/10.1155/2022/6394749 |
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