推导了复合材料应变率相关三维本构关系，并将其用于复合材料层板高速冲击损伤的数值模拟。该模型在复合材料层间引入界面单元模拟层间分层，结合三维Hashin失效准则进行单层板面内损伤识别，引入材料刚度退化，采用非线性有限元方法，研究了复合材料层板高速冲击的破坏过程及层板的损伤特性。数值分析结果表明，剩余速度预报结果与实验结果吻合较好，层板的主要损伤形式是层间分层、基体微裂纹和纤维断裂，减小弹体直径、增大铺层角度和层板厚度能够有效降低层板损伤面积。
A 3D rate-dependent constitutive model was developed to simulate damage of laminated polymer matrix composites under high velocity impact. The cohesive elements were involved between two layers to simulate delaminateion of the composite laminate under high velocity impact. The 3D Hashin failure criteria were used to predict the in-plane failure of composite by replacing quasi-static strength properties with rate dependent strength properties. By using a degradation constitutive model, the main damage modes of the composite laminates which were delamination, matrix crack and fiber breakage were simulated. Parametric studies show that the prediction of the residual velocities agree well with the experimental results, and reducing diameter of the projectile or increasing ply angle and target thickness will reduce the damage area of the composite laminates under high velocity impact.
参考文献
| [1] | Naik N K,Shrirao P.Composite structures under ballisticimpact[J].Composite Structures,2004,66(1-4):579-590. |
| [2] | 顾伯洪.织物弹道贯穿性能分析计算[J].复合材料学报,2002,19(6):92-96. |
| [3] | 梅志远,朱锡,张立军.FRC层合板抗高速冲击机理研究[J].复合材料学报,2006,23(4):143-149. |
| [4] | Xia Y M,Wang X.Constitutive equation for unidirectionalcomposites under tensile impact[J].Composites Science andTechnology,1996,56(2):155-160. |
| [5] | Wang Y,Xia Y M.A modified constitutive equation forunidirectional composites under tensile impact and the dynamictensile properties of KFRP[J].Composites Science andTechnology,2000,60(4):591-596. |
| [6] | Wang W,Makarov G,Shenoi R A.An analytical model forassessing strain rate sensitivity of unidirectional compositelaminates[J].Composite Structures,2005,69(1):45-54. |
| [7] | Wang W B,Shenoi R A.Investigating high strain ratebehaviour of unidirectional composites by a visco-elastic model[J].Journal of Ship Mechanics,2009,13(3):406-415. |
| [8] | Karim M R.Constitutive modeling and failure criteria ofcarbon-fiber reinforced polymers under high strain rate[D].Akron,OH:University of Akron,2005. |
| [9] | Aminjikarai B S,Tabiei A.A strain-rate dependent3-Dmicromechanical model for finite element simulations of plainweave composite structures[J].Composite Structures,2007,81(3):407-418. |
| [10] | Lim C T,Shim V P W,Ng Y H.Finite-element modeling ofthe ballistic impact of fabric armor[J].International Journalof Impact Engineering,2003,28(1):13-31. |
| [11] | Gilat A,Goldberg R K,Roberts G D.Experimental study ofstrain-rate-dependent behavior of carbon/epoxy composite[J].Composites Science and Technology,2002,62(10/11):1469-1476. |
| [12] | Zhou Y X,Xia Y M.In situ strength distuibution of carbonfibers in unidirectional metal-matrix composites-wires[J].Composites Science and Technology,2001,61(14):2017-2023. |
| [13] | Akil O,Yildirim U,Guden M.Effect of strain rate on thecompression behavior of a woven fabric S2-glass fiberreinforced vinylester composite[J].Polymer Testing,2003,22(8):883-887. |
| [14] | Hosur M V,Alexander J,Vaidya U K,et al.Studies on theoff-axis high strain rate compression loading of satin weavecarbon/epoxy composites[J].Composite Structures,2004,63(1):75-85. |
| [15] | Hashin Z.Failure criteria for unidirectional fiber composites[J].Journal of Applied Mechanics,1980,47(2):329-334. |
| [16] | Blackketter D M,Walrath D E,Hansen A C.Modelingdamage in a plain weave fabric-reinforced composite material[J].Journal of Composites Technology and Research,1993,15(2):136-142. |
| [17] | 朱伟垚,许希武.复合材料层合板低速冲击损伤的有限元模拟[J].复合材料学报,2010,27(6):200-207. |
| [18] | Camanho P P,Davila C G.Mixed-mode decohesion finiteelements for the simulation of delamination in compositematerials,NASA/TM-2002-211737[R].Washington:NASA,2002. |
| [19] | 王元博,王肖钧,卞梁,等.CDM模型及在纤维增强层合材料侵彻数值模拟中的应用[J].爆炸与冲击,2008,28(2):172-177. |
| [20] | Morye S S,Hine P J,Duckett R A,et al.Modeling of theenergy absorption by polymer composites upon ballistic impact[J].Composites Science and Technology,2000,60(14):2631-2642. |
| [21] | Jadhav A,Woldesenbet E,Pang S S.High strain rateproperties of balanced angle-ply graphite/epoxy composites[J].Composites Part B,2003,34(4):339-346. |
| [22] | Jacobs M J,Dingenen J V.Ballistic protection mechanisms inpersonal armor[J].Journal of Materials Science,2001,36(13):3137-3142. |
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