Analysis of sandwich single cantilever beam test specimen with graded core
Analysis of sandwich single cantilever beam test specimen with graded core
复制标题
DOI：
10.1080/09243046.2021.1907037
复制
发表时间：
2021-04
影响因子：
2.9
通讯作者：
Keishiro Yoshida;T. Aoki
中科院分区：
文献类型：
--
作者：
Keishiro Yoshida;T. Aoki
在以往的研究中，提出了一种分析模型，称为“梁在Vlasov基础模型”的理论分析的柔度和能量释放率的夹层单悬臂梁（SCB）的测试。当它被应用到具有均匀芯的夹层试样时，证实了分析模型的有效性。在这项研究中，分析模型被应用到分析的夹层SCB试样的芯部的杨氏模量变化沿着厚度方向。获得两个特定情况下的解决方案的程序进行了说明。一种是芯的杨氏模量在厚度方向上作为指数函数变化的情况。另一种情况是芯的杨氏模量作为指数函数的组合而变化，该指数函数关于芯的中平面对称。通过与有限元分析结果的比较，证实了梁分析模型即使在芯体厚度方向不均匀的情况下也能提供可靠的结果。
In previous research, an analysis model named the ‘beam on Vlasov foundation model’ was proposed to theoretically analyze the compliance and energy release rate of sandwich single cantilever beam (SCB) test specimens. The validity of the analytical model was confirmed when it was applied to sandwich specimens with homogeneous cores. In this study, the analysis model is applied to the analysis of a sandwich SCB test specimen where the Young’s modulus of the core varies along the thickness direction. The procedures to obtain the solution for two specific cases are described. One is the case that the Young’s modulus of the core varies in the thickness direction as an exponential function. The other is the case that the Young’s modulus of the core varies as a combination of exponential functions which is symmetric with respect to the midplane of the core. By comparing with finite element analysis, it is confirmed that the beam analysis model can provide reliable results even when the core is inhomogeneous in the thickness direction.