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论文类型：期刊论文

发表时间：2022-06-29

发表刊物：爆炸与冲击

所属单位：运载工程与力学学部

期号：1

页面范围：101-104

ISSN号：1001-1455

摘要：Loading experiments were carried out in a large explosion chamber under different conditions, and the strains and stresses at several typical positions were measured by an electric test method. The experimental results show that: (1) The stress peak for the first time is the highest at the outer surface of the spherical shell under explosion impact, and then the vibration is basically dominated in the states of alternate tensile and compressive stresses, which fall below 100 MPa immediately just after 1~2 cycles, so the vibration fatigue of the spherical shell can be markedly weakened by the soil accumulation; (2) The strength of the model meets the design requirements; (4) The area showing the maximum stress concentration is nearby the discharge port; (4) The shape factor of the explosive charge has a great influence to the structure safety.

备注：新增回溯数据