研究了卵形弹丸撞击下FRP层合板的侵彻和穿透性能,在局部化破坏模式假定的基础上改进了Wen提出的能量简化分析模型.改进模型仍假设弹体在侵彻过程中表面所受靶体的平均压力由靶体材料弹塑性变形所引起的静态阻力和速度效应引起的动阻力两部分组成,认为侵彻过程中靶体对弹的阻力不再是一个常数,而是与侵彻速度相关的函数.同时针对不同厚度靶板的破坏模式,建立了几种不同的侵彻和穿透模型.通过弹头长度与靶板厚度的比较,将侵彻过程分为部分侵彻和完全侵彻;穿透过程分为薄板穿透和中厚板穿透.并且根据不同的破坏方式给出了求解卵形弹丸的侵彻深度、残余速度和极限速度的预测公式.模型预测与实验数据进行了比较,发现侵彻深度和弹道极限速度的理论预测值与实验数据吻合得很好.
参考文献
[1] | Greaves L J.Failure mechanisms in GFRP armour[R].Unpublished UK DRA report,1992. |
[2] | Greaves L J.Progress in modeling the perforation of GFRP by ballistic projectiles[R].Unpublished UK DRA report,1994. |
[3] | Zhu G,Smith W G.Penetration of laminated Kevlar by projectiles-2[J].International Journal of Solid Structure,1992,29(4):421-436. |
[4] | Taylor J W,Vinson J R.Modelling ballistic impact into flexible materials[J].AIAA Journal,1990,28(12):2098-2103. |
[5] | Morye S S,Hine P J,Duckett R A,et al.Modelling of the energy absorption by polymer composites upon ballistic impact[J].Composite Science and Technology,2000,60(14):2631-2642. |
[6] | Siva Kumar K,Balakrishna Bhat T.Response of composite laminates on impact of high velocity projectiles[J].Key Eng Mater,1998,141/143(1):337-348. |
[7] | Wen H M,Reddy T Y,Reid S R,et al.Indentation penetration and perforation of composite laminates and sandwich panels under quasi-static and projectile loading[J].Key Eng Mater,1998,141/143(1):501-552. |
[8] | Reddy T Y,Wen H M,Reid S R,et al.Penetration and perforation of composite sandwich panels by hemispherical and conical projectiles[J].Trans ASME,J Pres Ves Tech,1998,120(2):186-194. |
[9] | Reid S R,Wen H M,Soden P D,et al.Response of single skin laminates and sandwich panels to projectile impact[C]//Wang S S,Williams J J,Lo K H,eds.Composite Materials for Offshore Operation-2.Amer Bur Shipp,1999:593-617. |
[10] | Wen H M.Predicting the penetration and perforation of FRP laminates struck normally by projectiles with different nose shapes[J].Composite Structures,2000,49(3):321-329. |
[11] | Wen H M.Penetration and perforation of thick FRP laminates[J].Composites Science and Technology,2001,61 (8):1163-1172. |
[12] | Mines R A W,Roach A M N.High velocity perforation behavior of polymer composite laminates[J].Int J Impact Eng,1999,22(6):561-588. |
[13] | 王元博,王肖均.Kevlar层合材料抗弹性能研究[J].工程力学,2005,22(3):76-81.Wang Yuanbo,Wang Xiaojun.Experimental study of ballistic resistance of Kevlar laminates[J].Engineering Mechanics,2005,22(3):76-81. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%