Dynamic response of secondary systems in structures subjected to ground shock or impact

1987 ◽  
Vol 9 (4) ◽  
pp. 287
Keyword(s):  
Dynamic Response ◽  
Secondary Systems ◽  
Ground Shock

Numerical Simulation on the Dynamic Response of Buried Pipelines Subjected to Blast Loads

2013 ◽  
Vol 671-674 ◽  
pp. 519-522 ◽  
Author(s):  
Guo Fu Xu ◽  
Zheng Dong Deng ◽  
Fei Fan Deng ◽  
Guo Bin Liu
Keyword(s):  
Numerical Simulation ◽  
Shock Wave ◽  
Dynamic Response ◽  
Buried Pipeline ◽  
Blast Loads ◽  
Buried Pipelines ◽  
Axis Direction ◽  
Ground Shock ◽  
Explosion Center

When the shock wave caused by explosion in geotechnical medium encountered buried pipeline, the buried pipeline may be destroyed. Use the LS-DYNA program to describe the deformation of buried pipelines under explosion ground shock. The results indicate that the process of the stress on pipe is instantaneous, and the back of buried pipelines against explosion center suffers greater instantaneous pulling stress in axis direction. The stress on the pipes, which is brought by the weaponary explosion, is involved with the distance between the pipe and explosion center and the diameter of pipe, among which the former involves greater. And the smaller pipe would get greater shock.

Dynamic Response of Multiply Supported Secondary Systems

1985 ◽  
Vol 111 (1) ◽  
pp. 20-41 ◽  
Author(s):  
Takeru Igusa ◽  
Armen Der Kiureghian
Keyword(s):  
Dynamic Response ◽  
Secondary Systems

The Dynamic Response of Shallow Buried Structure under the Action of Explosion Load

2014 ◽  
Vol 580-583 ◽  
pp. 1122-1126
Author(s):  
Qian Zhang ◽  
Hai Bing Wei ◽  
Jun Hai Zhao
Keyword(s):  
Dynamic Response ◽  
Effective Stress ◽  
Underground Structure ◽  
Effective Strain ◽  
The Other ◽  
Direct Impact ◽  
Indirect Impact ◽  
Ground Shock ◽  
Explosion Load

Simulating and analyzing the dynamic response of the shallow underground structure under the ground explosions by LS-DYNA. The results show that the ground shock under ground explosions contains two different forms, one is direct impact ground shock and the other is indirect impact ground shock; with the increasing of depth, the ground shock decreases. The effective stress of the upper part of the roof is larger than other parts of the shallow underground structure; the effective strain of the corner of the roof is larger than other parts of the shallow underground structure.

Human pilot dynamic response in flight and simulator.

1958 ◽  
Author(s):  
Edward Seckel ◽  
Ian A. M. Hall ◽  
Duane T. McRuer ◽  
David H. Weir
Keyword(s):  
Dynamic Response
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