Finite Element Analysis of Graphite/Epoxy Composite Pressure Vessel

• 作者: Meng-Kao Yeh Tai-Hung Liu
• 来源期刊: 材料科学与化学工程(英文)
• 学科: 物理学
• 关键词: Finite Element ANALYSIS Stress ANALYSIS Composite Pressure VESSEL Tsai-Hill FAILURE CRITERION
• 年，卷（期）: 2017,（7）
• 页码范围: 19-28
• 页数: 10页
• 分类号: O3

摘要

Shell structure is widely used in industrial applications, such as in machinery, aerospace, ship and building fields, as well as containers of pressurized chemicals or liquefied natural gas. Graphite/epoxy composites has advantages of light weight, high strength, corrosion resistance, low expansion, low shrin kage and are often used in the form of composite pressure vessel for various engineering applications. In this study, the stress distributions of composite pressure vessel were analyzed. The finite element code ANSYS was used in analysis, in which the eight-node element SHELL 281 was adopted. The internal pressure 20 MPa, as in container of compressed natural gas, was applied inside the symmetrical cross-ply graphite/epoxy composite pressure vessel. The finite element model was established with suitable mesh size and boundary conditions. The stress distributions are discussed for the composite pressure vessel, especially for the inner two layers at the junction of semis pherical part. The Tsai-Hill criterion was used to assess the failure of composite pressure vessel.