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Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2009, Vol. 10 Issue (5): 677-684    DOI: 10.1631/jzus.A0820746
Civil and Mechanical Engineering     
Penetration of disk fragments following impact on thin plate
Juan-juan LI, Hai-jun XUAN, Lian-fang LIAO, Wei-rong HONG, Rong-ren WU
Insititute of Chemical Machinery, Zhejiang University, Hangzhou 310027, China; Shenyang Aeroengine Research Institute, Shenyang 110015, China
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Abstract  To investigate the ballistic resistance and failure pattern of aeroengine casing following the impact of disk fragments, and to determine the optimum case structure, the phenomena of a 1/3rd disk fragment impact on single and double-layered thin plate targets were simulated using nonlinear dynamical analysis software MSC.Dytran. Strain rate effect was introduced in a Johnson-Cook (JC) material model for the disk fragment and the plate. Impact modeling was based on the Arbitrary Lagrange-Eulerian method, and simulated using explicit finite element method (FEM). Simulation results showed that the major failure pattern of the plate is shearing and tensile fracture with large plastic deformation. It was also concluded that the ballistic limit velocity increases with the standoff distance when it is beyond a certain value, and that greater resistance is obtained when the front plate has either a proportionately low or high thickness. The impact resistance of a double-layered plate may exceed that of a single plate if the thicknesses and standoff distance of the two plates are set appropriately.

Key wordsAeroengine      Disk burst failure      Case containment capability      Ballistic limit velocity     
Received: 24 October 2008     
CLC:  TH/C3778  
Cite this article:

Juan-juan LI, Hai-jun XUAN, Lian-fang LIAO, Wei-rong HONG, Rong-ren WU. Penetration of disk fragments following impact on thin plate. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2009, 10(5): 677-684.

URL:

http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A0820746     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2009/V10/I5/677

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