双材料梁界面力学及其应用:综述

发布时间：2018-08-07 17:04

【摘要】：双材料结构在工程中得到了广泛应用,如薄膜涂层、压电材料、复合材料层合板和夹层板、粘结接头、FRP加固混凝土结构等;然而,这些结构的破坏通常是从界面及其附近开始的.通常利用损伤力学的方法(材料强度的方法)来预测裂纹的萌生,利用断裂力学的方法来预测裂纹的扩展;因此,开展双材料结构的界面应力分析和具分层双材料结构的断裂以及相关分析是至关重要的.首先介绍双材料梁粘结界面应力分析的基本模型,从而为预测裂纹的萌生提供了有力工具.然后综述双材料梁界面断裂力学分析的基本方法,并详细介绍解析解求解的裂纹尖端法及其相关模型,重点强调裂纹尖端变形对分析结果的影响.最后介绍界面分层对双材料结构其它力学特性的影响,例如屈曲和振动特性.
[Abstract]:Bimaterial structures have been widely used in engineering, such as thin film coating, piezoelectric materials, composite laminates and sandwich plates, bonded joints FRP reinforced concrete structures, etc. The destruction of these structures usually begins with the interface and its vicinity. The method of damage mechanics (the method of material strength) is usually used to predict the initiation of cracks, and the method of fracture mechanics is used to predict the propagation of cracks. It is very important to carry out interfacial stress analysis and fracture and correlation analysis of bimaterial structures. This paper first introduces the basic model of bond stress analysis of bimaterial beams, which provides a powerful tool for predicting crack initiation. Then the basic methods of fracture mechanics analysis of the interface of bimaterial beams are summarized. The crack tip method and its related models for solving the analytical solution are introduced in detail, with emphasis on the influence of crack tip deformation on the analysis results. Finally, the effect of interface delamination on other mechanical properties of bimaterial structures, such as buckling and vibration, is introduced.
【作者单位】：上海交通大学船舶海洋与建筑工程学院;上海交通大学海洋工程国家重点实验室;上海交通大学高新船舶与深海开发装备协同创新中心;
【基金】：国家自然科学基金(51478265)
【分类号】：O346.1

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