Numerical Simulation on Drop Test of the Conical Shell

Abstract:

The drop test for the thin 2A12 conical shells was developed on a drop hammer. The dynamical responses, typical deformation histories and failure mode of the shells were presented. The drop impact response of the thin conical shells were numerically simulated and analyzed in detail by using the explicit, nonlinear transient dynamic code, LS-DYNA. In the calculation, the material plastic behavior of the conical shells was described by Johnson-Cook constitutive relationship, which includes the effects of the strain rate, strains harden and temperatures soften. The deformation and failure model of the conical shell obtained from the numerical simulation were consistent well with the experiment. It was shown that the calculation method, material model and the failure criterion were available. The test and numerical simulation results were all shown that the failure mode was different because of the different drop height.

• Periodical: Applied Mechanics and Materials (Volumes 44-47)
• Pages: 2341-2345
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.44-47.2341
• Online since: December 2010
• Authors: Yi Xia Yan, Wei Fang Xu, Xi Cheng Huang, Gang Chen, Zhi Ming Hao
• Keywords: Drop Experiment, Numerical Simulation, Thin Conical Shell

References

[1] Zhou Chunyan, Yu Tongxi, Lishiwei: Review on shock response of portable electroric products under drop inpact-tests, simulations and theories. Advances in Mechanics Vol. 2(2006), p, 239-246, in Chinese.

[2] Tang Liqun, Sun Hui, He Tinghui etc: Impact dynamics analysis and optimization design of a mobile phone under dropping condition. Modern Manufacturing Engineering Vol. 6 (2006), p, 112-114, in Chinese.

[3] Guliang, Zhang Zhenhua, Qu Jinli: Research on Transient Response of Motorcycle with Two Tires in Collision with Ground Simultaneousl. Jounary of Bejing Institute of Technology Vol. 1(1999), p, 23-29, in Chinese.

[4] Chen Yuzhe, Le Guopei, Jing Erli.: The Nomerical and Experimental Researches on Propagation of Elastic Stress Waves in a Conical Shell under the Axial Impulsive Loading. ACTA Mechanica Sinica Vol. 2(1987), p, 45-158, in Chinese.

DOI: 10.1007/bf02486854

[5] N.K. Gupta, Venkatesh: Experimental and numerical studies of impact axial compression of thin-walled conical shells[J], International Journal of Impact Engineering. 34(2007), p, 708-721.

DOI: 10.1016/j.ijimpeng.2006.02.008

[6] Chen Gang: Numerical and Experimental Investigation on Penetration Effects of Semi-Armor-Piercing Warhead [D]. China Academy of Engineering Physics(2006), p, 5-35, in Chinese.