Explosion loading and tunnel response

2011 ◽  
pp. 473-498
Keyword(s):  
Explosion Loading

Theoretical Analysis of a Reactive Reinforcement Method for Cylindrical Explosion-Containment Vessels

2014 ◽  
Vol 137 (1) ◽  
Author(s):  
Sui Yaguang ◽  
Zhang Dezhi ◽  
Tang Shiying ◽  
Li Jie ◽  
Lin Qizhao
Keyword(s):  
Shock Wave ◽  
Theoretical Analysis ◽  
Plastic Strain ◽  
Numerical Simulations ◽  
Circumferential Strain ◽  
Theoretical Calculations ◽  
Practical Application ◽  
Related Research ◽  
Explosion Loading ◽  
Approximate Expressions

A method for cylindrical explosion-containment vessels was presented, which used symmetrical implosion loading cooperating with the vessels to control the out-explosion loading, increasing the anti-explosion ability of explosion-containment vessels. In this study, theoretical analysis was developed first and response of cylindrical vessels loaded with implosion and out-explosion was discussed. Approximate expressions for final circumferential strain were obtained. Comparison between the theoretical calculations and the numerical simulations showed that the proposed method could effectively reduce the plastic strain of cylindrical explosion-containment vessels. The theoretical analysis introduced in this study can provide reference for related research. In addition, problems such as spall and defense of shock wave need to be solved before the presented method could be carried out in practical application.

Destruction Analysis of Broadside Multi-Cabin Protective Structure of Warship under Explosion Loading

2013 ◽  
Vol 395-396 ◽  
pp. 866-870
Author(s):  
Long Guang Jiang ◽  
Xiao Dong Zhang
Keyword(s):  
Shock Wave ◽  
Wave Attenuation ◽  
Wave Theory ◽  
Protective Structure ◽  
Naval Vessel ◽  
Reflected Shock ◽  
Defensive Structure ◽  
Explosion Loading ◽  
Shock Wave Theory ◽  
Extent Of Damage

Shock wave parameters of cabins for shipboard defensive structure are studied based on shock wave theory. The destroy of defensive structure can be estimated by impulse of shock wave. In the process of air shock wave propagating, isentropic suction wave is reflected from void cabin into defense structure. The solution of shock wave attenuation of void cabin can be reached by using isentropic line to replace the shock adiabatic of the reflected shock. It can be seen from the example that the multi-layers defense structure system of warship is very important to decrease the damage from explosive shock wave. The method can be used to predict the extent of damage of naval vessel.

The behaviour Analysis of RC Frame Structure under Explosion Loading

2010 ◽  
Vol 97 (28) ◽  
pp. 25-32
Author(s):  
Marin Lupoae ◽  
Carmen Bucur ◽  
Cătălin Baciu
Keyword(s):  
Frame Structure ◽  
Rc Frame ◽  
Behaviour Analysis ◽  
Rc Frame Structure ◽  
Explosion Loading

Damage detection on hull girder of ship subjected to explosion loading

2020 ◽  
Vol 198 ◽  
pp. 107006
Author(s):  
Yin Zhang ◽  
Jun Guo ◽  
Ning Hao ◽  
Junjie Yang ◽  
Shun Li
Keyword(s):  
Damage Detection ◽  
Hull Girder ◽  
Explosion Loading

Research on Dynamic Response of Q235 Steel Cylindrical Shell Subjected to Lateral Explosion Loading

2013 ◽  
Vol 631-632 ◽  
pp. 864-869
Author(s):  
Fu Yin Gao ◽  
Yuan Long ◽  
Chong Ji ◽  
Chang Xiao Zhang
Keyword(s):  
Cylindrical Shell ◽  
Dynamic Response ◽  
Nonlinear Dynamic ◽  
Computer Code ◽  
Nonlinear Dynamic Response ◽  
Q235 Steel ◽  
Explosion Loading ◽  
Experimental Researches ◽  
Oil Gas ◽  
Steel Cylindrical Shell

Experimental researches were presented on dynamic characteristics of Q235 steel cylindrical shell impacted-explosive laterally by 75g cylindrical TNT dynamite at the center．The dynamic response was obtained under different distances with different setting ways of explosive sources．By means of an explicit nonlinear dynamic finite element computer code LS-DYNA，the nonlinear dynamic response process of cylindrical shell subjected to laterally explosion loading were numerically simulated with ALE coupling method. The numerical simulation results were in good agreement with experimental data. The results provided important reference for the blast-resistant properties analysis and safety assessment of oil-gas pipes safety.

scholarly journals Explosion loading on equipment from CFD simulations

2016 ◽  
Vol 44 ◽  
pp. 601-613 ◽  
Author(s):  
Olav R. Hansen ◽  
Malte T. Kjellander ◽  
Jan A. Pappas
Keyword(s):  
Cfd Simulations ◽  
Explosion Loading

Investigations on Broken Rules of the 20# Cylindrical Steel Shell under Inside-Explosion Loading

2012 ◽  
Vol 189 ◽  
pp. 239-244
Author(s):  
Deng Wang Wang ◽  
Xue Jun Qin ◽  
Shi Ying Tang ◽  
Wen Xiang Liu ◽  
Hui Wang
Keyword(s):  
Hoop Stress ◽  
Axial Stress ◽  
Steel Shell ◽  
Element Analysis ◽  
Whole Process ◽  
Dynamic Finite Element Analysis ◽  
Explosion Loading ◽  
Cylindrical Steel ◽  
Blast Loadings ◽  
Explosion Center

Broken rules of cylindrical steel shell subjected to internal blast loads is the foundation for conducting safety assessment and failure analysis of explosion containment vessels. The experiments were carried out broken rules of the cylindrical steel shells subjected to internal blast loadings at the centers. The elastic-plastic response of cylindrical steel shells was conducted using nonlinear dynamic finite element analysis code LS-DYNA. The results show that the deformation was’t a discrepancy in the explosion center of the cylindrical steel shell in same space, and the deformation descended slower along with thickness augmentation in the end of explosion center. The radial stress、hoop stress and axial stress was a discrepancy in the thickness way of cylindrical steel shell of explosion center The most leading cause of destructivity of cylindrical steel shell was that inner wall bearing normal stress and exterior wall bearing tensile stress; the hoop stress was broken more than axial stress cylindrical steel shell. The whole process was presenting hoop fractured and axial growth.

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