TY - EJOU
AU - DENG, Yang-chun
AU - CHEN, Gang
TI - Carrying Capacity of Pressure Vessels under Hydrostatic Pressure
T2 - The International Conference on Computational \& Experimental Engineering and Sciences
PY - 2011
VL - 17
IS - 1
SN - 1933-2815
AB - To use material effective and keep pressure vessel safety, large deformation analysis for pressure vessel is very important. Until 2007, the elastic-plastic stress analysis method, that is the first time all over the world, is provided in ASME a.?-2 edition 2007 for boiler and pressure vessel standard that Finite Element Method is used with large deformation analysis. But there is no common recognized direct solution for the carrying capacity of pressure vessels yet and this restrict the application of large deformation analysis in pressure vessel design. This paper investigates the carrying capacity of pressure vessels under hydrostatic pressure, based on the elastic-plastic theory. Firstly, to understand the large deformation characteristic of pressure vessel, the expressions of pressure and strain of thin-walled cylindrical and spherical vessels under internal pressure is reviewed. Secondly, to investigate the solution of carrying capacity of pressure vessels, the plastic instability criterion is derived. Further, the method to obtain the carrying capacity of pressure vessels is given for all pressure vessel material and two representative examples for analysis solutions of cylindrical and spherical pressure vessel respectively are given. The proposed research can be used for the elastic-plastic stress analysis method of pressure vessels safely.
KW - pressure vessel
KW - carrying capacity
KW - large deformation
KW - elastic-plastic
DO - 10.3970/icces.2011.017.027