1、3600 英文单词， 18500 英文字符 ， 中文 5400 字 文献出处 :Jeyakumar M, Christopher T. Influence of residual stresses on failure pressure of cylindrical pressure vesselsJ. Chinese Journal of Aeronautics, 2013, 26(6): 1415-1421. Inuence of residual stresses on failure pressure of cylindrical pressure vessels M. Jeyakum
2、ar, T. Christopher Abstract The utilization of pressure vessels in aerospace applications is manifold. In this work, nite element analysis (FEA) has been carried out using ANSYS software package with 2D axisymmetric model to access the failure pressure of cylindrical pressure vessel made of ASTM A36
3、 carbon steel having weld-induced residual stresses. To nd out the effect of residual stresses on failure pressure, rst an elasto-plastic analysis is performed to nd out the failure pressure of pressure vessel not having residual stresses. Then a thermo-mechanical nite element analysis is performed
4、to assess the residual stresses developed in the pressure vessel during welding. Finally one more elasto-plastic analysis is performed to assess the effect of residual stresses on failure pressure of the pressure vessel having residual stresses. This analysis indicates reduction in the failure press
5、ure due to unfavorable residual stresses. KEYWORDS： Aerospace engineering; ASTM A36; Finite element analysis; Pressure vessels; Welding residual stress 1. Introduction Cylindrical pressure vessels are used in various elds such as chemical and nuclear industries, rocket motor case manufacturing and p
6、roduction of many weapon systems. Evaluation of failure pressure that a cylindrical pressure vessel can with- stand is an important consideration in the design of pressure vessels. While prediction of failure pressure of pressure vessels, it is also necessary to consider the residual stresses already present in the pressure vessels. Various methods are being used to estimate the failure pressure. Finite element techniques based on GPD (Global Plastic Deformation) are also used to eval
