文献类型：期刊文献

英文题名：Analytical Solution of Pressures and Layer Stresses in Multilayered Cylinder With Interlaminar Gaps

作者：Xiao, Zhengyan[1];Wang, Xuesheng[1];Wang, Xingsheng[2];Wang, Hao[1];Wang, Yang[1];Yao, Nengzhi[1]

机构：[1]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[2]China Special Equipment Inspect & Res Inst, Beijing 100029, Peoples R China

年份：2025

卷号：147

期号：6

外文期刊名：JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME

收录：;EI(收录号：20253318971880);WOS:【SCI-EXPANDED(收录号:WOS:001608344100004)】；

语种：英文

外文关键词：multilayered cylinder; interlaminar gap; stress calculation; contact pressure

摘要：With the continuous development of production demands, multilayered clamping high-pressure vessels are progressively advancing toward larger sizes and higher pressures, leading to a significant increase in the total thickness of multilayered cylindrical shells and the number of laminates. However, the current stress calculation methods for cylindrical shells are still primarily based on the ideal assumption of no interlaminar gaps. Existing calculation methods that account for gaps also have limitations, which hinder the evaluation of stress states and the overall safety of the equipment during operation. Based on the plane-strain model, analytical solutions for the three-dimensional stress and the pressure required to eliminate the gaps in multilayered cylinders are derived in this study. In previous related studies, the assumption of uniform small gaps has been commonly adopted, thereby neglecting the influence of gap size on certain parameters. However, as the number of laminates increases, the influence of gap size on the calculation accuracy cannot be ignored. To address this issue, this paper proposes calculation methods for the equivalent diameter ratio, Kj, of the combined cylinder and equivalent radius, Req, for the inspection points during the derivation process. These methods effectively eliminate the impact of gap value accumulation, which was previously overlooked, thereby improving the calculation accuracy. Through verification, the radial, circumferential, and axial stress results obtained using the calculation methods proposed in this study show good agreement with the finite element analysis (FEA) results. The analytical solution provides theoretical guidance for calculating the stress state of multilayered cylinders with interlaminar gaps.