基于渐进累积损伤理论和数据传递分析方法，对泡沫夹层复合材料的低速冲击以及冲击后的压缩破坏过程提出了一种全程数值分析方法，即对泡沫夹层复合材料的冲击以及冲击后损伤的泡沫夹层复合材料在压缩载荷下损伤扩展的全过程进行数值模拟分析。结果表明：由于该方法避免了以往学者对冲击后夹层板损伤状态所做的人为假设，把冲击后的预测损伤直接传递用于剩余强度的研究，从而提高了最终破坏载荷和剩余强度的预测精度，数值模拟结果与已有试验结果吻合较好。
Based on gradually cumulative damage theory and data transferring analysis method, a full numerical analysis method was presented to simulate the low-velocity impact and the compression failure process after low-velocity impact for foam sandwich composites, which simulated the whole process of the impact of foam sandwich composites and damage propagation under compressive load for the sandwich composites with impactdamage. The results show that the method enhanced the prediction precision for the ultimate failure load and residual strength because the method avoided the artificial assumption for the damage state made by previous scholars after the sandwich composite was impacted, and directly transferred the impact damage to study the residual strength. The numerical simulation results were in good agreement with tested results.
参考文献
| [1] | 李涛,陈蔚,成理,谭纪文,靳玉田,张国强.泡沫夹层结构复合材料的应用与发展[J].科技创新导报,2009(14):3-5. |
| [2] | 程小全,张子龙,吴学仁.小尺寸试件层合板低速冲击后的剩余压缩强度[J].复合材料学报,2002(06):8-12. |
| [3] | 崔海坡,温卫东,崔海涛.复合材料层合板冲击损伤及剩余强度分析方法[J].固体力学学报,2006(03):237-242. |
| [4] | Prasun Majumdar;Deepak Srinivasagupta;Hassan Mahfuz .Effect of processing conditions and material properties on the debond fracture toughness of foam-core sandwich composites: experimental optimization[J].Composites, Part A. Applied science and manufacturing,2003(11):1097-1104. |
| [5] | 朱炜垚,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(06):200-207. |
| [6] | V.S. Deshpande;N.A. Fleck .Isotropic constitutive models for metallic foams[J].Journal of the Mechanics and Physics of Solids,2000(6/7):1253-1283. |
| [7] | ANDREY SHIPSHA;DAN ZENKERT .Compression-after-Impact Strength of Sandwich Panels with Core Crushing Damage[J].Applied composite materials,2005(3/4):149-164. |
| [8] | Shi-Xun Wang .Low-velocity impact and residual tensile strength analysis to carbon fiber composite laminates[J].Materials & design,2010(1):118-125. |
| [9] | 贾建东,丁运亮,胡伯仁.复合材料层合板低速冲击后压缩破坏的数值模拟[J].机械科学与技术,2010(10):1320-1324. |
| [10] | Compression strength of sandwich panels with sub-interface damage in the foam core[J].Composites science and technology,2009(13):2054-2063. |
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