伞形张拉膜结构在冰雹冲击作用下的动力响应研究

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Abstract Taking an umbrella-shaped tension membrane structure commonly used in engineering as the research object, its dynamic response under hail impact was studied.Various test devices were designed and made.Through the hail impact test of the umbrella-shaped membrane structure, the displacement and velocity at different measuring points and the tension relaxation rate of the side cables were obtained.Then the finite element software ANSYS/LS-DYNA was used to simulate the impact of hail on the umbrella-shaped membrane structure, and the results were compared with the experimental data to verify the reliability and accuracy of the test.The final results show that the hail impact will cause large deformation of the umbrella-shaped membrane structure, accelerate stress relaxation, and even lead to membrane surface tearing and damage.The results lay a foundation for the study of the dynamic response of group hail impact, and also provide an engineering reference for the design, construction and maintenance of tensioned membrane structures.

Key words： umbrella tension film hail impact dynamic response numerical simulation；stress relaxation

Received: 14 January 2020 Published: 28 May 2021

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	Articles by authors
	XIE Haibing1
	LIU Changjiang2
	3
	WANG Mengfei1
	JIANG Su1
	LIU Jian2
	3
	ZHENG Zhoulian4

Cite this article:

XIE Haibing1,LIU Changjiang2,3, et al. Dynamic responses of umbrella shaped tension membrane structures under the impact of hail[J]. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(10): 218-227.

URL:

http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2021/V40/I10/218

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