爆炸冲击波超压加载伪随机网壳的分布规律研究

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Abstract By scale model explosion experiments and numerical simulations, the distribution of the overpressure on a pseudorandom reticulated shell loaded by explosion shock wave was investigated.A typical pseudorandom 140-sided reticulated shell was selected as an investigated object to carry out model explosion experiments.The shock wave overpressure data at the surface characteristic measuring points were measured.The errors of the experimental and simulation results were compared and its reasons were analyzed.Based on the experimental data, a numerical simulation model for the interaction between the explosion shock wave and the shell was established, which was then used to deal with six different conditions of air explosion and ground explosion at three different distances.The action process of the characteristic surface overpressure on the shell was analyzed, and the experimental results were extended.The distribution of shock wave overpressure on the shell was achieved, and the protecting measures to enhance the safety of the reticulated shell were put forward, which provides a reference to the shock safety design of pseudorandom reticulated shells.The results show that the overpressure peak value distribution on the pseudorandom reticulated shell is more complicated than the traditional symmetric one and the action mechanism is influenced by the pseudorandom characteristic of the structure, while the overpressure peak value is also of obvious difference at the similar position on the surface.The peak values of overpressure at the bottom and middle of the shell are generally higher than at other parts in the blast direction.The method of erecting explosion-proof wall at a certain distance outside the reticulated shell and reinforcing the middle and bottom nodes structure can improve its anti-impact security.

Key words： blast shock wave overpressure scale model pseudorandom reticulated shell numerical simulation

Received: 30 October 2018 Published: 28 April 2020

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	Articles by authors
	XIA Ming1
	2
	ZHOU Fengjun1
	LU Fangyun2
	ZHANG Ao1
	ZHENG Lei1
	SUN Yunhou1
	WANG Xiaodong1

Cite this article:

XIA Ming1,2,ZHOU Fengjun1, et al. Overpressure distribution on a pseudorandom reticulated shell loaded by explosion shock wave[J]. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(9): 1-8.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2020/V39/I9/1

[1] Fan F,Wang DZ, ZhiX D,et al.Failure modes of reticulated domes subjected to impact and the judgment[J]. Thin-Walled Structures.2010, 48(2)143~149. [2] 翟希梅,王永辉. 爆炸荷载下网壳结构的动力响应及泄爆措施[J]. 爆炸与冲击. 2012(04): 404-410. ZHAI Xi-mei, WANG Yong-hui.Dynamic response and explosion relief of reticulated shell under blast loading[J]. Explosion and Shock Waves. 2012(04): 404-410. [3] 苏倩倩，翟希梅. K8型单层球面网壳爆炸动力响应的简化计算方法研究[J]. 振动与冲击. 2018(05): 213-220. SU Qian-qian，ZHAI Xi-mei. Simplified calculation method for dynamic response of K8 single layer reticulated shell under blast load[J]. Vibration and Shock. 2018(05): 213-220. [4] Ma J L, Wu C Q, Zhi X D, et al. Prediction of Confined Blast Loading in Single-Layer Lattice Shells[J]. Advances in Structural Engineering. 2014, 17(7): 1029-1043. [5] Ma JL, Fan F, Zhang L, et al. Failure modes and failure mechanisms of single-layer reticulated domes subjected to interior blasts[J]. Thin-Walled Structures.2018, 132: 208-216. [6] Su Q, Zhai X. Dynamic response of single-layer reticulated shell with explosion-protection wall under blast loading[J]. Thin-Walled Structures.2018, 127: 389-401. [7] Fu S, Gao X, Chen X. The similarity law and its verification of cylindrical lattice shell model under internal explosion[J]. International Journal of Impact Engineering.2018, 122: 38-49. [8] Verwimp E, Tysmans T, Mollaert M, et al. Experimental and numerical buckling analysis of a thin TRC dome[J]. Thin-Walled Structures.2015, 94: 89-97. [9] Zhao Z, Chen Z, Yan X, et al. Simplified numerical method for latticed shells that considers member geometric imperfection and semi-rigid joints[J]. Advances in Structural Engineering. 2016, 19(4): 689-702. [10] Liu H, Ding Y, Chen Z. Static stability behavior of aluminum alloy single-layer spherical latticed shell structure with Temcorjoints[J]. Thin-Walled Structures.2017, 120: 355-365. [11]Wang H, Wu M. Study on the Shape Optimization of Cable-Stiffened Single-Layer Latticed Shells[J]. International Journal of Steel Structures. 2018, 18(3): 924-934. [12] Xie S, Wang Y, Wang X, et al. Parametric design and static behavior analysis of single-layer hemi-ellipsoida latticed shell: 2018 2nd International Workshop on Renewable Energy and Development (IWRED 2018)[C]. Guilin, China: 2018. [13] Hua Y, Akula P K,Gu L. Experimental and numerical investigation of carbon fiber sandwich panels subjected to blast loading[J]. Composites Part B: Engineering. 2014,56: 456-463. [14] Hua Y, Akula P K, Gu L, et al. Experimental and numerical investigation of the mechanism of blast wave transmission through asurrogatehead[J].Journal of Computational and Nonlinear Dynamics. 2014, 9(3): 1010-1011. [15] Lee S, Lee H, Lee J, et al. Shock Response Analysis of Blast Hardened Bulkhead in Partial Chamber Model under Internal Blast[J].Procedia Engineering.2017,173(Supplement C): 511- 518. [16] Xiao W, Andrae M, Ruediger L, et al. Numerical prediction of blast wall effectiveness for structural protection against air blast[J]. Procedia Engineering.2017,199(Supplement C): 2519 -2524. [17] Grisaro H Y, Dancygier A N. Spatial mass distribution of fragments striking a protective structure[J]. International Journal of Impact Engineering. 2018, 112(Supplement C): 1-14. [18] 亨利其.J. 爆炸动力学及其应用[M]. 熊建国，译.北京：科学出版社，1987.