Nonlinear Finite Element Analysis for Galloping of Iced Quad-Bundled Conductor

2013 ◽  
Vol 470 ◽  
pp. 232-235
Author(s):  
Li Qin ◽  
Ya Nan Li ◽  
Xiao Guang Wei

Based on the differences aerodynamic characteristics between each sub-conductor of iced bundled conductors, a two-node cable element with three translational and one torsional degrees of freedom at each node is utilized to imitate the bundled conductor and the two-node space beam elements are used to simulated the spacers. Established nonlinear finite element equations of bundled conductors based on the principle of virtual work and solved these equations using Newmark-β method. Numerical example was employed to demonstrate the reliable and efficient of the presented method and program.

2013 ◽  
Vol 456 ◽  
pp. 55-59
Author(s):  
Ren Bin Zhou ◽  
Xue Bing Liao ◽  
An Qing Ming ◽  
Yong Feng Zhang

Studying the armor-piercing effect of armor-piercing bomb that attacks aluminum target is essential, because the target can be considered the simulation of the actual fight equipment. Based on the hypothesis about building the fraction field, the armor-piercing effect of armor-piercing bomb is analyzed, and the velocity and the intruding depth parameter model of armor-piercing effect are established. Taking a certain armor-piercing bomb as example, the intruding processes of armor-piercing effect are simulated by using the nonlinear finite element analysis program LS-DYNA, while aluminum target simulates the wall of combat equipment in two different conditions. At last, the finite element simulated results are given and analyzed that agree with the experiments.


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