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首页> 外文期刊>Zeitschrift fur Angewandte Mathematik und Mechanik >Interface behavior of a bi-material plate under dynamic loading. Cohesive interface debonding
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Interface behavior of a bi-material plate under dynamic loading. Cohesive interface debonding

机译：动态载荷下双材料板的界面行为。粘结界面剥离

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摘要

The paper deals with the elastic and cohesive interface behavior of pre-cracked bi-material ceramic-metal structures under dynamic time harmonic load. The shear lag model as well as the Fourier method is applied to find the dynamic response of the considered bi-material structure, assuming the cohesive interface behaviour, accompanied before of the elastic-brittle one. In both cases, the growth of debond length is not considered, e.g. at a given loading condition the only corresponding debond length is found. The inertia forces of the already elastic debond parts of the bi-material structure are neglected. Appropriate contact conditions are proposed in order to fit together both elastic and cohesive solutions. The numerical predictions for the cohesive debond length of the bi-material structures is calculated by the aid of the corresponding value of the elastic debond length at the same loading condition. The influence of loading characteristics i.e. frequencies and amplitude fluctuations on the debond length and the interface shear stress distribution is discussed. The parametric analysis of the results obtained is illustrated by examples of the modern ceramic-metal composites on metal substrates and is depicted in figures. (C) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
机译：本文研究了在动态时间谐波载荷下预裂双材料陶瓷金属结构的弹性和内聚界面行为。应用剪切滞后模型以及傅立叶方法，在考虑了弹性脆性的先验情况下，考虑了内聚界面行为，考虑了所考虑的双材料结构的动力响应。在这两种情况下，均不考虑脱胶长度的增长，例如在给定的负载条件下，只能找到唯一的相应脱粘长度。双材料结构已经弹性的脱粘部分的惯性力被忽略。提出了合适的接触条件，以便将弹性和内聚力解决方案结合在一起。借助于在相同载荷条件下的弹性剥离长度的相应值，可以计算出双材料结构的内聚剥离长度的数值预测。讨论了载荷特性（即频率和振幅波动）对脱胶长度和界面剪切应力分布的影响。通过在金属基材上的现代陶瓷-金属复合材料的实例来说明获得的结果的参数分析，并在图中进行了描述。 （C）2014 WILEY-VCH Verlag GmbH＆Co.KGaA，Weinheim

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