The effect of memory and stiffness on energy ratios at the interface of distinct media

IF 1.7 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Multidiscipline Modeling in Materials and Structures Pub Date : 2023-03-15 DOI:10.1108/mmms-10-2022-0209
M. Barak, Rajesh Kumar, Rajneesh Kumar, V. Gupta
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引用次数: 5

Abstract

PurposeThis paper aims to study the energy ratios of plane waves on an imperfect interface of elastic half-space (EHS) and orthotropic piezothermoelastic half-space (OPHS).Design/methodology/approachThe dual-phase lag (DPL) theory with memory-dependent derivatives is employed to study the variation of energy ratios at the imperfect interface.FindingsA plane longitudinal wave (P) or transversal wave (SV) propagates through EHS and strikes at the interface. As a result, two waves are reflected, and four waves are transmitted, as shown in Figure 2. The amplitude ratios are determined by imperfect boundaries having normal stiffness and transverse stiffness. The variation of energy ratios is computed numerically for a particular model of graphite (EHS)/cadmium selenide (OPHS) and depicted graphically against the angle of incidence to consider the effect of stiffness parameters, memory and kernel functions.Research limitations/implicationsThe energy distribution of incident P or SV waves among various reflected and transmitted waves, as well as the interaction of waves for imperfect interface (IIF), normal stiffness interface (NSIF), transverse stiffness interface (TSIF), and welded contact interface (WCIF), are important factors to consider when studying seismic wave behavior.Practical implicationsThe present model may be used in various disciplines, such as high-energy particle physics, earthquake engineering, nuclear fusion, aeronautics, soil dynamics and other areas where memory-dependent derivative and phase delays are significant.Originality/valueIn a variety of technical and geophysical scenarios, wave propagation in an elastic/piezothermoelastic medium with varying magnetic fields, initial stress, temperature, porosity, etc., gives important information regarding the presence of new and modified waves.
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记忆和刚度对不同介质界面能量比的影响
目的研究弹性半空间(EHS)和正交各向异性压热弹性半空间的非完美界面上平面波的能量比。设计/方法/方法采用具有记忆相关导数的双相位滞后(DPL)理论研究非完美界面处能量比的变化。发现平面纵波(P)或横波(SV)通过EHS传播并撞击界面。结果,两个波被反射,四个波被传输,如图2所示。振幅比由具有法向刚度和横向刚度的不完美边界确定。针对石墨(EHS)/硒化镉(OPHS)的特定模型,对能量比的变化进行了数值计算,并根据入射角以图形方式进行了描述,以考虑刚度参数、记忆和核函数的影响。研究局限性/含义入射P波或SV波在各种反射波和透射波之间的能量分布,以及不完美界面(IIF)、法向刚度界面(NSIF)、横向刚度接口(TSIF)和焊接接触界面(WCIF)的波的相互作用,是研究地震波行为时需要考虑的重要因素。实际意义本模型可用于各种学科,如高能粒子物理学、地震工程、核聚变、航空、土壤动力学和其他记忆相关导数和相位延迟显著的领域。独创性/价值在各种技术和地球物理场景中,具有不同磁场、初始应力、温度、孔隙率等的弹性/压热弹性介质中的波传播提供了有关新波和修正波存在的重要信息。
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来源期刊
CiteScore
3.70
自引率
5.00%
发文量
60
期刊介绍: Multidiscipline Modeling in Materials and Structures is published by Emerald Group Publishing Limited from 2010
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