摘要
采用Ansys/Ls-dyna建立了Kevlar纤维层合板的三维有限元模型,模拟了Kevlar纤维层合板的抗侵彻过程和抗弹性能,模拟结果与实验吻合较好,证明了模拟方法以及模型参数的合理性。在此基础上讨论了靶板的抗弹机理以及破坏方式,分析得到了随着靶板厚度的变化,抗弹性能会出现一个拐点,靶板破坏方式会发生变化,而在拐点之后,靶板厚度增加,靶板吸收能量减少,抗弹性能降低的结论。对某种特定弹体,存在一个合理的厚度匹配,以发挥Kevlar纤维层和板的抗弹性能。
The paper built 3D finite element model by means of Ansys/Ls-dyna.In the paper,it simulated the anti-penetration process and anti-resilience for Kevlar fiber laminate,the simulation result was better fitted with experiment,and the rationality was certified in simulation method and model parameter.Based on the above mentioned,it discussed the anti-resilience mechanism and breakage pattern,and analyzed that with the variation of target ban thickness,the performance of anti-resilience would appear an inflection point,and also the breakage pattern of target ban would be changed.After the inflection point,with the increasing of target ban thickness,the absorbed energy of target ban would be decreased,and the anti-resilience performance would be reduced.For a certain specified resilience body,there must be a reasonable thickness match to exert its anti-resilience performance of Kevlar fiber laminate.
出处
《四川兵工学报》
CAS
2011年第3期17-20,共4页
Journal of Sichuan Ordnance
