Numerical Analysis of Bird Impact on an Aluminum Alloy Plate
(0) A numerical model of bird impact on a square aluminum alloy LY12-CZ plate was established using the explicit finite element code PAM-CRASH.In the numerical model,constitutive model of aluminum alloy LY12-CZ was described by Johnson-Cook equation.Stress-strain curves at 4 different strain rates of aluminum alloy LY12-CZ were measured by split Hopkinson tensile bar (SHTB) tensile tests and 5 constants in Johnson-Cook equation were fitted.Bird was modeling by Smooth Particle Hydrodynamics (SPH) method.Mumaghan EOS equation for the bird material simulation was introduced.Two corresponding bird impact experiments were conducted.The calculation results were compared with the bird impact experimental results.The good agreement between them has confirmed the numerical analysis model including bird and aluminum alloy constitutive model is reasonable and reliable.The analysis process and numerical calculation method used in this paper provides reference for anti-bird impact study of aircraft structure.
Bird impact constitutive model SHTB smooth particle hydrodynamics experiment numerical calculation
Liu Fu Zhang Jiazhen Hu Zhongmin Zhang Mingyi Guo Yazhou
Aeronautical Science & Technology Research Institute of COMAC, Beijing 102211, PR China; Nanjing Uni Aeronautical Science & Technology Research Institute of COMAC, Beijing 102211, PR China Northwestern Polytechnical University, Xian 710012, PR China
国际会议
上海
英文
63-63
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）