A two-dimensional ideal gas finite element

The formulation of a family of two-dimensional finite elements that model a n ideal gas is presented. The elements support nonlinear analysis and repre sent either a plane strain or axisymmetric condition. The family of element s is intended for use with conventional elasticity-type elements to perform structural analysis of insulated glass units, pressure vessels, and other systems for which the interaction between a gas and a solid is of interest. Extension of the formulation to three-dimensional elements is straightforw ard. (C) 2001 Elsevier Science B.V. All rights reserved.