Experimental and numerical analysis of interfacial fracture in piezoelectric composites
Experimental and numerical analysis of interfacial fracture in piezoelectric composites
复制标题
压电复合材料界面断裂的实验和数值分析
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
白瑞祥
中科院分区：
文献类型：
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作者：
白瑞祥
本文采用光弹性分析方法，对含环氧树脂粘结剂的压电复合材料进行了定比复合型断裂试验。利用数字图像相关(DIC)技术得到了复合材料的变形场和应变场，并利用梁理论计算了压电复合材料的临界断裂能。分别采用虚拟裂纹闭合技术和牵引分离定律计算了VCCT和CZM两种方法的SERR值。当采用CZM方法时，有限元计算结果与试验结果吻合较好。另一方面，尽管VCCT方法不能…
In this paper, piezoelectric composite specimens with epoxy resin adhesive for fixed-ratio mixed-mode (FRMM) fracture tests with photoelasticity analysis were performed. The deformation and strain field are obtained by digital image correlation (DIC) technologies, and the beam theory is used to calculate the critical fracture energies for piezoelectric composites. The values of SERR were calculated using the Virtual Crack Closure Technique and the traction-separation law for VCCT and CZM approaches respectively. Good agreement of the load-displacement response was obtained between the FEA and experimental results when using CZM approach. On the other hand, although the VCCT approach cannot …