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Magnetic-yielding zone model for assessment of two mode-III semi-permeable collinear cracks in piezo-electro-magnetic strip
Mechanics of Advanced Materials and Structures ( IF 2.8 ) Pub Date : 2020-10-12 , DOI: 10.1080/15376494.2020.1827466
Pooja Raj Verma 1
Affiliation  

Abstract

A magnetic-yielding zone model for an infinitely long piezo-electro-magnetic strip weakened by two mode-III semi-permeable collinear cracks is proposed. Fourier series method and integral equation technique are adopted to solve the problem. The closed-form analytical expressions are obtained for several fracture parameters, namely crack opening potential drop, crack-sliding displacement, crack opening induction drop, intensity factors, and energy release rates. Also, the explicit analytical expressions are derived for developed magnetic-yielding zones. An illustrative numerical study is presented for poled BaTiO3-CoFe2O4 material to observe the impact of inter-crack distance, volume fraction, prescribed loadings, electro-magnetic crack-face boundary conditions on fracture parameters.



中文翻译:

用于评估压电电磁条中两种 III 型半透共线裂纹的磁屈服区模型

摘要

提出了一种由两个III型半透共线裂纹弱化的无限长压电电磁带的屈服区模型。采用傅里叶级数法和积分方程技术求解。得到了裂纹张开势降、裂纹滑动位移、裂纹张开感应降幅、强度因子和能量释放率等多个断裂参数的闭合解析表达式。此外,还推导出了发达的屈服磁区的显式解析表达式。对极化的 BaTiO 3 -CoFe 2 O 4进行了说明性的数值研究材料观察裂纹间距、体积分数、规定载荷、电磁裂纹面边界条件对断裂参数的影响。

更新日期:2020-10-12
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