The Influence Factors of Grain Integrity under the Internal Pressure Condition in SRM
To investigate the influence factors of propellant grain integrity under the internal pressure, the cylindrical grain was equivalent to a thick-wall cylinder and its three-dimension stress-strain problem was solved. Under the internal and external pressure, the strain and displacement equations of t...
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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/10.1155/2021/5521455 |
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| author | Chunguang Wang Weiping Tian |
| author_facet | Chunguang Wang Weiping Tian |
| author_sort | Chunguang Wang |
| collection | DOAJ |
| description | To investigate the influence factors of propellant grain integrity under the internal pressure, the cylindrical grain was equivalent to a thick-wall cylinder and its three-dimension stress-strain problem was solved. Under the internal and external pressure, the strain and displacement equations of the inside thick-wall cylinder were expressed, and then, the stress and strain expressions of grain were obtained. On this basis, the hoop strain equations on the inside surface of the cylindrical grain and case were developed. The hoop strain on the inner surface of the grain can be predicted by the hoop strain of the case cylinder via the strain equations, and therefore, the hoop strain in the inner surface can be indirectly monitored in real time during the working process of the motor. The hoop strain in the inner surface of grain can be effectively reduced by increasing the case stiffness or decreasing the m number of the grain. |
| format | Article |
| id | doaj-art-7d677a143737484098442a029c0b5a47 |
| institution | Kabale University |
| issn | 1687-5966 1687-5974 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-7d677a143737484098442a029c0b5a472025-02-03T07:24:24ZengWileyInternational Journal of Aerospace Engineering1687-59661687-59742021-01-01202110.1155/2021/55214555521455The Influence Factors of Grain Integrity under the Internal Pressure Condition in SRMChunguang Wang0Weiping Tian1State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaThe Fourth Academy of China Aerospace Science and Technology Corporation, Xi’an 710025, ChinaTo investigate the influence factors of propellant grain integrity under the internal pressure, the cylindrical grain was equivalent to a thick-wall cylinder and its three-dimension stress-strain problem was solved. Under the internal and external pressure, the strain and displacement equations of the inside thick-wall cylinder were expressed, and then, the stress and strain expressions of grain were obtained. On this basis, the hoop strain equations on the inside surface of the cylindrical grain and case were developed. The hoop strain on the inner surface of the grain can be predicted by the hoop strain of the case cylinder via the strain equations, and therefore, the hoop strain in the inner surface can be indirectly monitored in real time during the working process of the motor. The hoop strain in the inner surface of grain can be effectively reduced by increasing the case stiffness or decreasing the m number of the grain.http://dx.doi.org/10.1155/2021/5521455 |
| spellingShingle | Chunguang Wang Weiping Tian The Influence Factors of Grain Integrity under the Internal Pressure Condition in SRM International Journal of Aerospace Engineering |
| title | The Influence Factors of Grain Integrity under the Internal Pressure Condition in SRM |
| title_full | The Influence Factors of Grain Integrity under the Internal Pressure Condition in SRM |
| title_fullStr | The Influence Factors of Grain Integrity under the Internal Pressure Condition in SRM |
| title_full_unstemmed | The Influence Factors of Grain Integrity under the Internal Pressure Condition in SRM |
| title_short | The Influence Factors of Grain Integrity under the Internal Pressure Condition in SRM |
| title_sort | influence factors of grain integrity under the internal pressure condition in srm |
| url | http://dx.doi.org/10.1155/2021/5521455 |
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