Finite element analysis of toughening for a particle-reinforced composite
Finite element analysis of toughening for a particle-reinforced composite
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DOI：
10.1002/pc.20201
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发表时间：
2006-08-01
影响因子：
5.2
通讯作者：
Debnath, S.
中科院分区：
文献类型：
--
作者：
Sun, C. J.;Wu, W.;Debnath, S.
采用轴对称球胞法对玻璃颗粒增强的2，2-双[4-（2-羟基-3-甲基丙烯酰氧基丙氧基）苯基]丙烷/三甘醇二甲基丙烯酸酯（BisGMA/TEGDMA）聚合物复合材料的增韧进行了定量预测。研究了一种新型界面相（由高分子量聚乙烯组成）和残余应力对复合材料韧性的影响。结果表明，复合材料的断裂韧性随界面相厚度的增加而增加，而当界面相厚度小于颗粒直径的10%时，复合材料的杨氏模量并没有显著降低。源自固化过程的负应变降低断裂韧性，而想象的正应变显著增加断裂韧性。
An axisymmetric spherical cell is used to quantitatively predict the toughening of a glass particle-reinforced 2,2-bis[4(2-hydroxy-3 methacryloyloxypropyloxy)-phenyl]propane/triethylene glycol dimethacrylate (BisGMA/TEGDMA) polymer composite. The effect of a novel interphase consisting of ultrahigh molecular weight polyethylene, and residual stresses on composite toughness is studied. Results show that the fracture toughness of the composite increases with increasing interphase thickness, while the Young's modulus is not reduced significantly if the interphase thickness is less than 10% of the particle diameter. The negative strain originating from the curing process reduces fracture toughness, while an imagined positive strain increases fracture toughness significantly.