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- Title
圆柱壳结构水下爆炸冲击波毁伤的吸收冲量准则.
- Authors
毛致远; 段超伟; 刘刚伟; 宋 浦; 郑 监; 胡宏伟; 冯海云
- Abstract
To accurately evaluate the damage degree of the cylindrical shell structure caused by underwater explosion shock wave, the factor of impulse transmission efficiency during the coupling process between the shock wave and the target is considered. The total impulse absorbed by the cylindrical shell under the action of a spherical shock wave is suggested as the power parameter in the damage criterion of the cylindrical shell structure, and an integral calculation method for it is provided. A simplified algorithm without integral is further developed to avoid the complexity of engineering calculation. The accuracy and applicability of the criterion are examined by literature data. The results show that, when compared to the peak pressure criterion, the specific impulse criterion and the energy flux criterion, the absorbed impulse criterion can more accurately compare the damage effects of cylindrical shell targets under different working conditions, it has a stronger correlation with the damage degree, and its corresponding mean square error is reduced by more than 76%. The simplified calculation method for the new criterion approximates the results of the integral calculation, and the relative errors are all within 0.9% for the working conditions. The proposed damage criterion with good accuracy and applicability provides new support for the accurate assessment of the damage effect of the underwater explosion on cylindrical shell structures.
- Subjects
CYLINDRICAL shells; UNDERWATER explosions; SPHERICAL waves; SHOCK waves; SUBMERGED structures
- Publication
Chinese Journal of Explosives & Propellants, 2023, Vol 46, Issue 3, p245
- ISSN
1007-7812
- Publication type
Article
- DOI
10.14077/j.issn.1007-7812.202210003