ABSTRACT

The stiffness of adhesively bonded single-lap joints is of fundamental importance in the static and dynamic sizings of engineering structures. Nevertheless, existing analytical stiffness determination models show a large discrepancy when compared to experimental results or finite element analyses. Within the present paper, a novel analytical approach for stiffness determination of single-lap joints under tensile loading is derived, which takes the out-of-plane deformation of the adherends into account. In order to provide a comprehensive model validation, single-lap joint experiments with two different adherend materials, two different adhesives and two different bondline thicknesses are conducted. Furthermore, analytical results are compared to two-dimensional finite element analyses. The presented model shows a good agreement with stiffness determination when compared to experimental and numerical results while offering a higher degree of accuracy when compared to existing stiffness determination models.

摘要

粘合单搭接接头的刚度在工程结构的静态和动态尺寸确定中具有根本性的重要性。然而，与实验结果或有限元分析相比，现有的分析刚度确定模型显示出很大的差异。在本文中，推导了一种新的分析方法，用于在拉伸载荷下确定单搭接接头的刚度，其中考虑了被粘物的平面外变形。为了提供全面的模型验证，对两种不同的被粘材料、两种不同的粘合剂和两种不同的胶层厚度进行了单搭接试验。此外，分析结果与二维有限元分析进行了比较。