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首页> 外文期刊>International Journal of Solids and Structures >Transient response of an interface crack between dissimilar piezoelectric layers under mechanical impacts
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Transient response of an interface crack between dissimilar piezoelectric layers under mechanical impacts

机译:机械冲击下不同压电层之间界面裂纹的瞬态响应

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摘要

Using the integral transform and the Cauchy singular integral equation methods. the problem of an interface crack between two dissimilar piezoelectric layers under mechanical impacts is investigated under the permeable electrical boundary condition on the crack surface. The dynamic stress intensity factors (DSIFs) of both mode-I and 11 are determined. The effects of the crack configuration and the combinations of the constitutive parameters of the piezoelectric materials on the dynamic response are examined. The numerical calculation of the mode-I plane problem indicates that the DSIFs may be retarded or accelerated by specifying different combinations of material parameters. In addition, the parameters or the crack configuration. including the ratio of the crack length to the layer width and the ratio between the widths of two layers. exert a considerable influence on the DSIFs. The results seem useful for design of the piezoelectric structures and devices of high performance. (C) 2002 Elsevier Science Ltd. All rights reserved. [References: 16]
机译:使用积分变换和柯西奇异积分方程法。研究了在裂纹表面上的可渗透电边界条件下,两个异质压电层在机械冲击下的界面裂纹问题。确定了模式I和11的动态应力强度因子(DSIF)。研究了裂纹形态以及压电材料的本构参数组合对动力响应的影响。 I型平面问题的数值计算表明,通过指定材料参数的不同组合,可以延迟或加速DSIF。另外,参数还是破解配置。包括裂纹长度与层宽度的比率以及两层宽度之间的比率。对DSIF产生相当大的影响。该结果对于设计高性能的压电结构和器件似乎很有用。 (C)2002 Elsevier ScienceLtd。保留所有权利。 [参考:16]

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