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| Creep Properties and Accelerated Storage Test Method of Rigid Foam Cartridge |
| Received:December 20, 2021 Revised:February 27, 2022 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2022.04.004 |
| KeyWord:rigid foam cartridge creep characteristics constitutive relation temperature-time equivalent accelerated storage |
| Author | Institution |
| QIN Yu-ling |
Beijing Institute of Space Long March Vehicle, Beijing , China |
| GONG Xiao-chun |
Beijing Institute of Structure and Environment Engineering, Beijing , China |
| LI Xiao-dong |
Beijing Institute of Space Long March Vehicle, Beijing , China |
| WANG Ju-min |
Beijing Institute of Space Long March Vehicle, Beijing , China |
| QU Hong-yi |
Beijing Institute of Space Long March Vehicle, Beijing , China |
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| Abstract: |
| The creep characteristics and the evaluation method of storage life to rigid foams were researched in this paper. The creep constitutive relation of the foam bombardment materials was established based on the creep performance data by measuring the rigid foam bombs at a constant temperature stress level. Then the temperature-time equivalent theory and the high temperature accelerated storage test method of the foam shells were studied. The creep constitutive relation and the compressive parameter of the rigid foam made no evident change after the high temperature creep test. The creep characteristics were the key sensitive factors affecting the long-term storage failure of rigid foams. The accelerated storage method of the rigid foam cartridge based on the temperature-time equivalent theory and the WLF equation was worked out to support the storage life assessment and life extension research of the entire cartridge structure. |
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